[1]The present invention relates to that, more specifically, the exhaust gas processing apparatus and processing method which can suppress or prevent interference between the exhaust gas flow by a piecewise negative pressure difference in the equipment on the exhaust gas treatment apparatus and method.
BACKGROUND
[2]Sintered ore is the blast furnace charged water produced by the iron ore, limestone, coke and anthracite etc. as raw materials minutes. When the blast furnace operation for producing molten iron, sintered ore is charged with the iron ore and coke in the interior of the blast furnace. Sintered ore produced by the sintering process is a process for the manufacture of fine iron ores to a size suitable for blast furnace use. Sintered ore production process includes a process of manufacturing the method comprising the steps of: preparing a blended raw material, combination raw material in sintered ore. Process for producing a sintered ore as the raw material formulation which is typically performed in the sintering machine.
[3]
Process for producing a sintered ore as the raw material compounding is carried out as follows. While moving the sintering balance in the extending direction of the based sintered, charging the blended raw material on the sintered bogie at a constant height, and to burn the surface layer of blended raw material produce a raceway and, by using the exhaust gas treatment apparatus of air downward in the sintered balance a suction force to the raceway moves downward and sintering the incorporated material. Then, the blended material, for example sintered ore sintering is complete, is cooled and crushed through a crusher, and a condenser provided in the light distribution region of the sintering machine, is classified to a particle size of 5㎜ to 50㎜ suitable for blast furnace use is sent to the blast furnace.
[4]
On the other hand, enhancement of the sintering machine with a sintering flue gas circulation technology for reducing energy attracted the attention of the American Kinsey published in the AIME 1975 fiscal year. In this presentation has been presented groups form on-strand cooling sintered to extend the combined length of the cooling groups sintering-based sintered, cattle associated with cooling on the assumption of two areas parts divided suction and sintering the high-temperature exhaust gas discharged from the cooler portion the energy-saving type sintered model used to circulate the air presented together. Since then, Japan and Europe have similar research and numerous patents have been published or pending throughout the 1970s and 1980s.
[5]
When applying the sintering exhaust gas circulation described sintering machine operating by recycling the sensible heat of the exhaust gas in the sintering can reduce the energy required for sintering. The first oil crisis in 1984 after Wakayama then converted to 4 groups on the sintered cooling-strand sintering, by recycling the cooled portion of the air-based sintered and used as air for the sintering. In addition, it was also applied to the sintering exhaust gas circulation technique circulating groups sintering the exhaust gas of the cooler, etc. Other Kyushu and Kashima. And by the 1991 NKK to increase the suction capacity for the purpose of improving productivity of the Fukuyama-4 sintered, recirculating the exhaust gas to the second blower is recovered after installing the second blower to the fold portion side of the based sintered, boiler installed there a method of improving, with the sensible heat recovered capacity was applied.
[6]
Or more cases are the cases in the exhaust gas into sensible heat of the exhaust gas amount reducing ancillary purposes that while for the purpose of reducing the energy transfer to the layer by sintering or spark, applying a sintering exhaust gas circulation described sintering machine operation.
[7]
On the other hand, as the reinforcement is regulated by the environmental policy recently, and the investment and operating costs for the process equipment, such as sulfur oxides (SOx) and nitrogen oxides (NOx) acts in the cost burden. Thus, in the international steel mills to recycle times the amount of gas discharged from the sintering machine possible, reducing the investment costs for pollution prevention equipment, and by reducing the energy deal with greenhouse gas regulations.
[8]
For example, 1992 Kitakyushu 3 sintering of the NSC was reduced times the amount of gas of 28% by improving the equipment Limit your exhaust gas while maintaining productivity and quality, and then develop the 1994 German Lurgi is EOS (Emission Optimized Sintering) it by applying the Hoogovens sintering plant in the Netherlands it was reduced to approximately 40% times gaseuryangreul. In this case one would have compared to international environmental regulation is not a complete state of the art.
[9]
In addition, the 1994 toe Hutu process Institute of NSC, Austrian Voest-Alpine, Australia's BHP and Italian CSM, and conducting research to improve the sintering process, etc. (Centro Sviluppo Materiali) environmentally-friendly processes, Sumitomo in groups sintered On-strand cooling It is under study the two ignition sintering method of reusing the exhaust gas at the top of the sinter at the bottom by the raw material layer by charging classified into two stages of upper and lower sintering burns respectively.
[10]
On the other hand, as a way to increase production of sintered ore, and to zoom in on the image area of ​​the group of measures to increase blower capacity of the exhaust gas treatment apparatus to increase the air volume and the sintering sintering methods of increasing the air volume sintering. At this time, if increasing the blower capacity of the exhaust gas processing apparatus must be also expanded structure for the cleaning of exhaust gas, the maintenance ratio of the exhaust gas treatment apparatus is further picked.
[11]
Thus, Pohang 4 Sintering of POSCO while introducing a sintering exhaust gas circulation technology, in response to the blast furnace increase internal volume expansion and gochul of sintered ore demand due to the scholar operation for the purpose of evaporating the sintered ore, was enlarged to an image area of ​​based sintered, the add was installed a blower for circulating the exhaust gas to the exhaust gas processing apparatus in response to the flow rate by increasing the sintering.
[12]
At this time, the additional blower is structured to circulate the rear end of the sintered layer is of a relatively oxygen consumption after the suction of the exhaust gas is located at a high pressure and less air flow resistance is the largest part of the sintered layer at a suction position of the exhaust gas. On the other hand, the exhaust gas drawn into the additional blower is supplied to the circulation because the upper sintered layer, the total amount of exhaust gas can be maintained. Therefore, it is possible to increase the image area of ​​the Pohang 4 sinter and even add a blower, to use the existing structures associated with the off-gas cleaning of the exhaust gas treatment apparatus as it is.
[13]
(Prior art document)
[14]
(Patent Document)
[15]
(Patent Document 1) A KR10-2002-0014877
[16]
(Patent Document 2) A KR10-2016-0079240
[17]
(Non-Patent Document)
[18]
(비특허문헌 1) F.W. Kinsey, Dravo co., , "Design parameters for strand cooling", AIME, vol.34, Ironmaking proceeding, p85, (1975)
[19]
(비특허문헌 2) D. Schlebusch, F. Cappel, "Optimization of pollution control in sinter plant", 6-th International symposium on agglomeration, p403-408, Nagoya, Japan, (1993)
Detailed Description of the Invention
SUMMARY
[20]
The present invention provides exhaust gas treatment apparatus and a processing method capable of suppressing or preventing flow between the exhaust gas by the piecewise negative pressure difference between the equipment interference.
[21]
The present invention inhibit or prevent interference between the exhaust gas flow of the plant to provide the exhaust gas processing apparatus and processing method that can improve the operating efficiency of the equipment.
Problem solving means
[22]
The exhaust gas treatment apparatus according to an embodiment of the present invention, moving a plurality of sections, and the suction has a circular area and the exhaust area in the lower part of the balance that is installed to be processed of a raw material and extending in the running direction of the truck, separated from each other part; And a cutoff unit that is to seal the gap between the balance and the suction unit, installed on the boundary of the circular region and the exhaust region; and a.
[23]
Wherein the suction portion includes a plurality of wind boxes arranged along the running direction of the truck, and the plurality of wind boxes are concatenated, each top end adjacent to the suction portion extending direction, and the cut-off portion of the plurality of wind of the box across the boundary of the circular area and the exhaust area it can be installed in the top end of each of the concatenated part of the windbox in contact with the boundary.
[24]
Distance between a bottom surface of the block portion and the upper surface of the balance can 100㎜ less than zero within an error range.
[25]
Exhaust gas treatment apparatus according to another embodiment of the present invention, moving the plurality of sections and being disposed below each other, separated circular area and the exhaust area in of the vehicle is installed to be processed of a raw material, arranged along the running direction of the truck a plurality of wind boxes; and include, of the plurality of wind boxes, the upper end portion of the wind box which is disposed adjacent to the boundary of the circular area and the exhaust area can be projected than the upper end of the other windbox.
[26]
It said portion windbox comprises a first wind box and the second includes a windbox, and the upper end of the first wind box and the second wind box in contact which is located in the exhaust region sandwiching the boundary positions in the circular area It may be located within a distance of less than 0 100㎜ from a lower surface of the vehicle.
[27]
It may comprise; at the boundary blocking portions that are installed on the balance, and to seal the gap between the part of the windbox wherein the top end is one wind box and the second wind box in contact.
[28]
The blocking of the exhaust gas treatment apparatus according to the embodiments of the present invention comprises: a body block portion and extending in a direction intersecting with the running direction of the truck; The running direction of the truck flap is formed protruding on the isolation portion body; may contain.
[29]
The flap may be formed on an upper or lower portion of the block body portion, it may be formed between the upper and lower portions of the block body portion. The flap may be located in at least one area of ​​the circular region and the exhaust region. The flap may be a negative pressure of the circulation area and the exhaust area located in the smaller area. If the cross-sectional width of the upper end of the wind box facing the flap 1, the projecting length of the flap may be up to more than 0 to 2/3.
[30]
The cut-off portion, at least one rib that is formed protruding on an upper surface of the flap may further comprises a. The rib may extend in a direction crossing the running direction of the running direction or the balance of the vehicle. When the plurality of ribs are formed, the plurality of ribs may be partially extend in the running direction of the truck, and the other extends in a direction intersecting with the running direction of the vehicle.
[31]
The cut-off portion, in the cut-off portion is formed to be inclined downward in the body tip end portion of the flap projecting in the direction toward the end portion of the flap it may further comprises a. If the cross-sectional width of the upper end of the wind box facing the flap 1, the running direction of the balance total protruding length of the flap and the tip may be up to more than 0 to 2/3.
[32]
Exhaust gas treatment process according to the embodiment of the present invention is the process of heat treatment, the raw materials charged in the balance shifts in the plurality of sections; A lower portion of the balance and extends along the running direction of the truck, with the suction portion having a circular area and the exhaust area, separated from each other, comprising the steps of: sucking the interior of the truck; It includes; and a process for the exhaust gas of the circulation area and the exhaust area, the negative pressure, the smaller the area of ​​the suppressed from flowing back toward the gap between the balance and the suction unit.
[33]
Using blocking portion provided at the boundary of the circular region and the exhaust region, it is possible to suppress the backflow of the exhaust gas.
Effects of the Invention
[34]
According to the embodiments of the present invention, it is possible to suppress or prevent the interference between the flow of the exhaust gas due to the negative pressure zone by the difference of the equipment, it is possible to improve the operating efficiency of the equipment.
[35]
For example, when applied to a sintered ore production operation of the mill, placed between the boundary of the circular region of the balance lower the plurality of wind boxes arranged in the running direction of the vehicle exhaust gas and venting zone upper side of each concatenation of some wind box in contact with the boundary to install and block in the end. And between during and heat treatment sikimyeo by charging the raw material in the balance to move the plurality of section sucks the interior of the vehicle downward, the blocked portion used in the in the rotation region and the exhaust region smaller negative pressure region of the flue-gas balance and the windbox a negative pressure to reverse the side of the gap can be reduced or prevented from flowing into the large area.
[36]
Or, in the balance bottom across the boundary of the circular region of the plurality of wind boxes of the exhaust gas arranged in the running direction of the vehicle and the exhaust zone, the upper end of the other windbox of the upper end of each concatenation of some of the windbox in contact with the boundary thereby protruding more upward. At this time, may be added to block further provided in contact with each other, the upper end of the above-mentioned part windbox. And of during and heat treatment sikimyeo by charging the raw material in the balance to move the plurality of section sucks the interior of the vehicle downward, projecting the upper end or the cut off parts of the area which the exhaust gas of the exhaust and the area that is circular with a portion of the windbox there is a small negative pressure region the exhaust gas can be suppressed or prevented by reverse flow toward the clearance between the bogie and the wind box is introduced into the negative pressure is large area.
[37]
In this way, contact with the boundary of the circular region and the exhaust region of the exhaust gas while the while receiving the exhaust gas flow of the wind box placed in the venting zone edge of a windbox and the exhaust gas is placed in the circulation area, the edge of the exhaust gas interference with each other small a negative pressure relative side windbox in it is possible to suppress or prevent the reverse flow of exhaust gas occurs. Therefore, to improve both the efficiency of the circulation flow and the exhaust flow of the exhaust gas, and can improve the overall exhaust gas flow. Could eventually improve the efficiency of manufacturing sintered ore operation it can be produced with high quality ores.
Brief Description of the Drawings
[38]
1 is a schematic view of a material treatment system according to an embodiment of the invention.
[39]
2 is a schematic view showing an exhaust gas processing apparatus according to an embodiment of the invention.
[40]
Figure 3 is a schematic block unit according to an embodiment of the first variant of the invention.
[41]
Figure 4 is a schematic block unit according to an embodiment of the second variant of the invention.
[42]
Figure 5 is a schematic block unit according to an embodiment of the third modification of the present invention.
[43]
Figure 6 is a schematic block unit according to an embodiment of the fourth modification of the present invention.
[44]
Figure 7 is a schematic block unit according to an embodiment of the fifth modification of the present invention.
[45]
Figure 8 is a schematic diagram of the exhaust gas flow suction unit according to a comparative example of the present invention.
[46]
Figure 9 is a graph showing the result by analyzing the exhaust gas flow value suction unit according to a comparative example and an embodiment of the invention the chart.
[47]
Figure 10 is a photo photographed the result of a reduction in exhaust gas flow modeling experiments suction unit according to a comparative example and an embodiment of the present invention.
[48]
Figure 11 is a graph showing the result of a reduction in exhaust gas flow modeling experiments suction unit according to a comparative example and an embodiment of the invention the table.
Mode for the Invention
[49]
With reference to the accompanying drawings, a description will be given of an embodiment of the present invention; However, the present invention is not limited to the embodiments set forth herein, it will be embodied in many different forms. Simply embodiments of the invention will be, and to complete the disclosure of the invention provided so as to those of ordinary skill will fully convey the concept of the invention known in the art. In order to explain the embodiment of the invention the figure may be exaggerated, same reference numerals on the drawings refer to like elements.
[50]
Of terms for explaining the embodiment of the present invention, the "upper" and "lower" refers to each of the upper and lower parts, as part of the component. In addition, it refers to the space on the working contact, either directly or indirectly to the upper and lower portions of the "under" and "on" are the components.
[51]
The present invention is capable of a negative pressure difference in each section of the plant for example, it inhibits the flow interference between the exhaust gas flow stream and the exhaust stream is circulated in a sintering machine by a negative pressure difference between the windbox or prevent the exhaust gas processing apparatus and method It relates. Hereinafter, detailed salmyeong the embodiment on the basis of sintered ore produced in the mill operation. Of course, the invention may be utilized in the exhaust gas flow control in a variety of treatment facilities.
[52]
On the other hand, in the following description of an embodiment of the present invention, after the above raw material treatment system according to an embodiment of the present invention is the understanding of the present invention to clear first, the exhaust gas processing apparatus according to an embodiment of the present invention it is based on, and off-gas treatment It will be described in a detailed way.
[53]
1 is a schematic view of a material handling facility is the exhaust gas treatment apparatus according to an embodiment of the present invention is applied, Figure 2 is a schematic diagram showing parts of the suction portion and the blocking of the exhaust gas treatment apparatus according to an embodiment of the invention.
[54]
In addition, it Figures 3 to 7 is a schematic view showing various parts of the block modification according to an embodiment of the invention. In this case, Figure 3 is a schematic block unit according to an embodiment of the first variant of the invention, FIG 4 is a third embodiment of the present embodiment, the second is a schematic block unit in the modification example, the Fig. 5 of the present invention invention is a schematic block unit in the modification example, FIG. 6 is a schematic block unit according to an embodiment of the fourth modification of the present invention, Figure 7 is a schematic block unit according to an embodiment of the fifth modification of the present invention.
[55]
1, the raw material processing apparatus according to an embodiment of the present invention comprises, the balance 10, a raw material hopper 21, the upper light hopper 22, to the ignition 30 and the exhaust gas treatment device 400 do.
[56]
Materials handling equipment, for example accept charging the raw material being able to result in shifts in the order in the heat treatment according to the plurality of sections can be sintered date capable of circulating at least a portion of the exhaust gas to at least a portion of a plurality of intervals that occur at a plurality of intervals. For example, sintering may be inhaled with the date of the lower exhaust gas recirculation structure.
[57]
The balance 10 is moved a plurality of sections, and can be installed to be processed of a raw material. Vehicle (10) is arranged to be provided continuously in the extension direction of the plurality of material handling facilities can be installed to be traveling in a, in which a plurality of segment array direction can be combined with each other. The balance 10 and the interior may be open to the upper side, the space in which the raw material is loaded heat treatment is formed in the space of the interior. The interior of the vehicle 10 can be charged into the raw material from falling.
[58]
The balance 10 is the lower surface, for example is may be provided as for example a lattice structure Great bar (grate bar) the bottom (11), it is possible to communicate with the wind box to the interior of the vehicle 10 will be described later, by the trellis and it can be drawn downward by the wind box.
[59]
Vehicle (10) may form a transport path to the upper side, it is possible to form the return path at the lower side. After light distribution on the balance (10) and running in one direction along a transfer path to a heat treatment while moving the raw material loaded therein in one direction, and while entering the return path crushing the sintered ore thermal treatment is completed (not shown), by running the return path in the direction opposite to the one direction it may be in Recurrence transport path.
[60]
Transfer path may include a plurality of sections. A plurality of interval, the raw material hopper 21 and the upper optical hopper 22 is positioned charging interval, including a sintering period which is located on the opposite side of the loading zone around the ignition period and the lighting period in which the position of ignition (30) , and may, based on the direction in which the material is moved continuously by charging period, the order of the ignition zone and sintering zone may be arranged.
[61]
Charging section may be located on the upstream side of the transport path to one side edge relative to the direction in which the raw material prior to the movement of the side edges of the transfer path. The raw material is loaded in the inside of the track 10 in the loading section the raw material layer is formed on the inside of the track (10). Lighting period may be provided extending in the direction of movement of the material to the downstream side of the charging section to charge the relatively trailing period with respect to the direction in which the raw materials are moved. The upper portion (the top layer) of the raw material layer stacked on the inner balance 10 in the ignition zone and ignited.
[62]
Sintering period is a period that while moving the raceway formed on the top layer placed on the balance 10 in a lower portion (hereinafter referred to as "lower layer") of the material layer sintering and cooling the raw material layer, the ignition to the direction in which material is moved relative to the trailing segment can be located. The balance 10 may be subjected to heat treatment while moving the material to a charged region, the order of the ignition zone and sintering zone to produce a sintered ore.
[63]
The raw material hopper 21 has a hopper which is a raw material stored therein, one side of the balance 10, for example, is positioned on the charging period. Raw material hopper 21 may be a charging chute and the drum feeder provided at a lower side opening, it can be loaded by vertical segregation of the material in the truck (10).
[64]
Material may include a formulation for producing sintered ore raw material. For example, the raw materials were mixed, and the humidity control the iron source, additives and a solid fuel can be provided to the particle size of the assembly can ㎜ degree. In this case, as the iron source is an iron source having an iron component, may include iron ore and iron ore fines, additives may include a limestone as additives containing calcium carbonate, solid fuel is finely divided coke and anthracite coal as a coal-based solid fuel the can be included.
[65]
Upper light hopper 22 may be preceded by a raw material hopper 21 in the direction of movement of the material provided on the upstream side of the charging period. The top light can be provided for example by screening a 8㎜ to 15㎜ particle size of the sintered ore of the sintered ore. Upper light serves to prevent the contents in the interior of the raw material before the balance 10, the raw material is attached to the bottom of the track 10, or the raw material is lost as a gap between the bottom (11).
[66]
Ignition (30) is spaced apart in the direction in which the traveling truck 10 in the feed hopper 21 may be positioned on a balance (10), for example on one side on the truck 10, which is a raw material hopper 21 located It is spaced apart in the direction in which the truck 10 is traveling may be located on the lighting section of the transfer path. To the ignition 30 may be formed to be a flame jet to the lower side, serves to ignition by applying a flame to the upper layer. At this time, the flame may be complexed to the solid fuel contained in the upper layer.
[67]
Exhaust gas treatment device 400 according to an embodiment of the present invention includes moving a plurality of intervals, and intervals at least a portion of the exhaust gas to be drawn downwardly multiple of the track 10 while sucking the inside of the track (10) for processing the raw material to be formed makes it possible to cycle.
[68]
1 and 2, the exhaust gas processing apparatus 400 according to an embodiment of the present invention may include a suction unit, block 413, the vent pipe 420, an exhaust gas circulation portion, and the exhaust gas exhaust portion.
[69]
The suction unit in the lower portion of the track 10 may extend along the running direction of the vehicle (10). For example, to surround the lower portion of the suction unit balance 10 can be extended in the running direction of the vehicle (10). Suction unit may include a plurality of the windbox 410 is arranged along the running direction of the vehicle (10). A plurality of wind box 410 can be concatenated to each of the upper end adjacent to the suction portion extending direction. A plurality of wind box 410 communicates the interior of the vehicle 10 through the bottom 11 of the track 10, to form a negative pressure therein and draw the interior of the vehicle 10 in a downward direction, in the raw material layer moving the raceway to the lower layer in the upper layer, it is possible to sinter the raw material. The off-gas from the above process is collected inside a plurality of the windbox 410.
[70]
Vehicle (10) has passed through the ignition (30) is passed through the suction unit while the traveling in one direction. The attractive force of the downward direction is generated in the interior of the vehicle 10 by the suction portion. By this suction force, the air on the balance (10) passes through the inside of the track 10 and is moved to the lower combustion consideration while aspiration downward. The balance 10 has the balance 10 to the end points of the leads to the bottom 11 of the sintering of the raw material layer is completed, the transfer since paths combustion consideration the balance (10) as they pass through the one point in the sintering section moves while the sintered ore is cooled, it may be light distribution portion of the boat, provided on the end point of the transfer path.
[71]
A plurality of wind box 410 is placed a predetermined distance spaced from the floor 11 of the vehicle 10 to and sucking the inside of the vehicle 10 is moving downward prevent collision with the balance (10). In addition, the bottom of the plurality of wind box 410 balance 10 to the air flow resistance effectively sucks the interior of the other bogie 10 in accordance with the sintering conditions in various points of the respective sections while passing through the respective sections (11 ) it is in spaced by a predetermined distance. That is, a plurality of the windbox 410 adjacent the upper end portion and the structure are spaced a predetermined distance from the floor 11 of the vehicle 10 in contact.
[72]
On the other hand, the suction unit may have a circular area and the exhaust area are separated from each other therein, a plurality of the windbox 410 windbox 411 and the wind box 412 is arranged in an exhaust area is arranged in a circular area as it can be distinguished.
[73]
Circular region may be an inner region in contact with the suction portion after a point in the sintering range to the other point in the sintering section. At this time, a point within the above-described sintering section may include a point which is led to the bottom 11 of the combustion consideration the balance 10 in the raw material layer complete the sintering of the raw material layer. Other points in the above-described sintering period may include another point at which the air flow resistance value of the sintered raw material layer is lowered than a predetermined starting value.
[74]
Exhaust region comprise a suction portion internal region in contact with from the point at which the conveying path to start up that the interior one in contact with the point suction portion in the above-described sintering section, terminates the transfer path from the other points in the above-described sintering interval point can. That is, the exhaust area may be a region in the remaining part other than the suction cycle region.
[75]
On the other hand, one point and another point in the interval the above-mentioned sintering is one example for explaining the invention, a sintering period may be divided in various ways, as needed on the operation. And ninth above cycle region and the exhaust region is to illustrate one way of a number of methods for circulating the exhaust gas, the addition may be is selected variously circulation zone and exhaust zone separated from each other, the exhaust gas in a number of ways It can be circulated.
[76]
Before a description of the block 413, the vent pipe 420, an exhaust gas circulation portion, and the exhaust gas exhaust portion of the exhaust gas treatment device 400 according to an embodiment of the present invention is the understanding of the present invention to clear will be described first.
[77]
Vent pipe 420 is provided a plurality of spaced apart along the extending direction of the suction portion can be communicated with the lower suction portion, detail may be may be mounted through the lower portion of the plurality of the windbox 410. Vent pipe 420 may be divided into a wind box 411 of the vent pipe 422, which is mounted to the wind box 412 is disposed in and the vent pipe 421, an exhaust region which is mounted in place in the circular region .
[78]
Exhaust gas circulation portion being connected to one side of the vent pipe 421 is fitted to the wind box 411 of the part for example, circular area of ​​the plurality of vent pipe 420, and the other side may be opened to a predetermined position on the plurality of sections. Exhaust gas circulation portion can be circulated to the exhaust gas sucked from the air flow resistance is the largest part of the sintered raw material layer in a predetermined position on the plurality of sections.
[79]
At this time, there exhaust gas circulation portion the other side can be opened between the aforementioned one and end points of the transfer path of the sintering section, it can be opened in the downstream side rather than the aforementioned one point of the sintering section. This means that the parts of the flue-gas cycle the other side which opens at a relatively less oxygen is consumed in the sintering section downstream. Of course, in addition to the exhaust gas circulation portion the other side above position can be opened in various positions on the plurality of sections. It will be described below based on the structure of the exhaust gas circulation portion for circulating an air flow resistance of the sintered raw material layer suction at the largest portion in the exhaust gas downstream of the sintering section.
[80]
It may include an exhaust gas circulation portion, the circulation pipe 430, the circulation blower 451 and the hood 460. Circulation pipe 430 is provided with a passage therein, and one end is connected to a vent pipe of 421 attached to the wind box 411 of the circular area in contact with the large air flow resistance of the sintered raw material layer portion, the other end It can be connected to the hood (460). Circulation blower 451, for example a blower for circulating the exhaust gas, is mounted on one side of the circulation pipe 430 to form a flow of the exhaust gas toward the other end from one end of the circulation pipe (430). By the flow, it can be a flue-gas circulation flow formed in the wind box 411 of the circular area.
[81]
Hood 460 may be extended in the running direction of the vehicle 10 on the truck 10, it may be extended so as to be positioned between the end point of the transfer path in the above-described one point of the sintering section. Hood 460 is inside the opening to the lower side facing the truck 10 can be communicated to the other end of the circulation pipe (430). Hood 460 may be circulated and supplied to the balance (10) by receiving the exhaust gas from the circulation pipe (430).
[82]
The vent pipe of the unit are not connected to the exhaust gas circulation plurality of vent pipe 420, 422 may be connected to a flue-gas exhaust part. The exhaust gas is collected in a wind box 412 of the exhaust area may be vented to the atmosphere by way of a flue-gas exhaust.
[83]
Flue-gas exhaust part is one side is connected to a vent pipe 422 attached to the remainder, for example the wind box of the exhaust region 412 of the plurality of vent pipe 420, and the other can be open to the atmosphere. Flue-gas exhaust unit can discharge the off-gas can be collected into the windbox (412) of the venting zone. Flue-gas exhaust unit may comprise an exhaust chamber 440, the dust collector 470, a main blower 452 and vent 480. The
[84]
The exhaust chamber 440 is provided with a passage therein, one end is connected to a vent pipe 422 mounted in the windbox of the exhaust area 412, and the other end can be connected to the exhaust port 480. Main blower 452 is for example an air blower for exhaust gas emission, is mounted to one side of the exhaust chamber 440, it is possible to form a flow of the exhaust gas toward the other end from one end of the exhaust chamber (440). By the flow, it can be a flue gas exhaust stream to form a wind box 412 of the venting zone. On the other hand, the exhaust gas is there is contained a contaminant, such as dust and nitrogen oxide and sulfur dioxide, a dust collector 470 to the other side of the exhaust chamber 440 leading to the main blower 452, the exhaust gas flow direction in order to filter the pollutants It is installed.
[85]
Crushing unit (not shown) is provided at the downstream end of the sintering zone. Sintered ore that the light distribution in the balance 10 is then crushed in a crushing unit in a predetermined particle size is selected on the screen (not shown) according to the particle size another process, for example supplied to the blast furnace operation, or used as a top light or can be reused as a raw material.
[86]
On the other hand, a main blower 452 and circulation blower 451 is different from the suction position, and suction area. That is, main blower 452 and circulation blower 451 and has a different position and number of the wind box to be drawn. In addition, the balance (10 to pass the phase of the raw material layer in a truck (10) to pass onto the windbox connected to the main blower 452, 412, ventilation, and the wind box is connected to the circulation blower (451) 411 air permeability of the material layer is also different from each other in a). By these differences main blower 452 and circulation blower 451 is different from the operating pressure.
[87]
Thus, a main blower 452, the negative pressure and the circulation blower 451 to be applied to the wind box 412 of the exhaust region is different from the magnitude of the negative pressure to be applied to the wind box 411 of the circulation zone, for sucking in each It differs from the amount of exhaust gas. For example, circulation blower 451 is the size of the negative pressure to be applied to the wind box 411 of the circular area to the main blower 452 is larger than the size of the negative pressure to be applied to the wind box 412 of the venting zone. Of course, this may also be applied against each other. That is, the negative pressure in the exhaust area may be larger.
[88]
Such a case, the negative pressure can flow into the high negative pressure zone by a reverse flow of the exhaust gas lower region. That is, the interference occurs between the negative pressure is different circular area and an exhaust-gas flow in the boundary of the area may cause reverse flow of exhaust gas into the high negative pressure. The off-gas back flow can be through the gap between the floor 11 and the suction part of the track (10), it flows into the high vacuum region.
[89]
As thus interfere with the operation of a main blower 452 and circulation blower 451 operating pressure or by the difference of the suction cycle the blower 451 at the boundaries of the venting zone and circulation zone in the suction portion between the main blower 452, part of the exhaust-gas which should be in the venting zone and countercurrent to the circulation of the negative pressure region and by a negative pressure difference decreases the amount of exhaust gas suction side of the main blower 452. This is called the flow interference between the main blower 452 and circulation blower 451.
[90]
According to an embodiment of the present invention to inhibit or prevent the flow interference between the main blower 452 and circulation blower 451 occur at the boundaries of the venting zone and circulation zone in the suction portion, the blocking portion to the boundary of the circular region and the exhaust region to install 413 may seal the gap between the balance portion 10 and the suction.
[91]
2, the blocking portion 413 extends in the direction intersecting with the running direction of the vehicle 10 can be for example formed of a block-form. Block 413 may be interposed between the plurality of wind box 410 bounding the circular region and the exhaust region of the installation on the upper end of each of the concatenated part windbox in contact with the boundary.
[92]
At this time, the distance between the upper surface and the lower surface of the truck 10 of the blocking unit 413 may 100㎜ less than zero within an error range. Here, the margin of error referred to may be a mechanical or electronic error range of the measuring means, in consideration of the structural deformation of the vehicle floor 10, 11 and the blocking portions 413, a structural conflict between these It can mean the minimum clearance can be prevented.
[93]
The gap between the top end of the bottom 11 and the wind box of the vehicle 10 at the boundary of the venting zone and circulation zone by a blocking section 413 can be narrowed. That is, it is possible to achieve the effect that the aforementioned gap by a blocking section 413 sealing, thus, the negative pressure can be prevented from being leaked flow up the lower side. And block 413, the remaining positions in through a gap between the top end of the bottom 11 and the wind box of the vehicle 10 and the exhaust gas can not freely accessible, whereby the exhaust gas in each of the venting zone and circulation zone without the suction can be formed stably.
[94]
On the other hand, block 413 according to an embodiment of the present invention can be implemented in a variety of formats, including the modification described below.
[95]
3, the embodiment of the invention the first shielding portion (413A), the blocking portion body (413 ') extending in a direction crossing the running direction of the vehicle 10 according to the modified example, the balance (10) that the running direction to protrude in the block body portion (413 ") plates, or may comprise a wing-like flap 414. At this time, the flap 414 may be formed on the block body portion (413 ').
[96]
Flap 414 may give directly save that the flap 414 is located to form a flow-blocking surface on the wind box, the exhaust gas flows backward into jjokin high rotation region a negative pressure in the venting zone jjokin a low negative pressure. In other words, the flap 414 will be described together when hydrodynamic has a significant meaning in terms which interprets value for the exhaust gas flow inside the suction unit according to a comparative example and an embodiment of the invention hereinafter to be described the result do.
[97]
In addition, the flap 414 is customized to the upper surface of a raw material which drops through the floor 11 of the vehicle 10, it can further narrow down the gap between the balance and the suction unit, the interface between the venting zone and circulation zone more effectively It may be sealed.
[98]
5, the blocking portion (413C) according to an embodiment of the third modification of the present invention can form the height of the above-described first modification of the isolation portion (413A) and the flap 414 may be different. That is, the third block section according to a modified example (413C) has a blocking portion body (413 running direction of the cut-off portion body (413 '), the balance (10) extending in a direction crossing the running direction of the vehicle (10) It may include a flap 414 of the plate or blade-like protrusion formed at the lower portion of ').
[99]
As such, the varying heights between the upper and lower portions of the flap 414 in various modified examples of the invention, may be formed on the top or bottom of, although not shown in the figure, the block unit body (413 block unit body 413 ") to be formed.
[100]
3 if and 5, the flap 414 may be located in at least one region of the circular region and an exhaust region, wherein, the negative pressure of the two regions may be located in a smaller area. Further, even in the case of the fourth modification of the block parts (413D), and a fifth modified example of the blocking portion (413E), which will be described later, the flap 414 is a negative pressure of the circulation area and the exhaust area can be located in a smaller area. That is, the first, third, fourth, and a fifth modified example of the invention illustrating the flaps 414 to the negative pressure is located in a small area of ​​the exhaust-side area.
[101]
On the other hand, FIG. 4, the blocking portion (413B) according to the second variant of the invention may include a flap 414, a pair of which is located both in the circulation zone and venting zone. That is, the second blocking portion according to a modified example (413B) has a blocking portion body (413 running direction of the cut-off portion body (413 '), the balance (10) extending in a direction crossing the running direction of the vehicle (10) It is formed to project on "), and both circular area and the exhaust area positions, and may include a flap (414) of the pair having a plate or a blade shape.
[102]
Of course, embodiments of the present invention may further have various modification including a flap (414) which is located only in the larger area of ​​the negative pressure in addition to the above-described modified examples, circular region and the exhaust region. Thus, the flap 414 according to the modified examples of the present invention may be located in at least one region of the circular region and the exhaust region.
[103]
On the other hand, if, according to the modified examples of the present invention cross-sectional width of the upper end of the wind box facing the flap (414) is 1, the protruding length of the flap may be up to more than 0 to 2/3. When the flap (414) projecting beyond a length of 2/3 with respect to the cross-sectional width of the first upper end of the wind box opposed to the flap 414 of the effect of preventing the reverse flow of the exhaust gas is wind looking grow only facing the flap (414) this is because the flue-gas flow to be introduced into the box may be deteriorated.
[104]
6, a first blocking portion (413D) according to to the quadrilateral of the present invention may further include at least one rib 415 is formed projecting on the upper surface of the flap 414. That is, the fourth modification to to block part (413D), the block extending in the direction intersecting with the running direction of the vehicle 10 including the body (413 '), the running direction of the vehicle (10) blocking portion body according to the present invention (413 ') may comprise at least one rib 415 is formed projecting on the upper surface of the flap 414, the flap 414 is formed to protrude.
[105]
At this time, drawing flaps 414, but showing a bottom structure that is formed to project to the blocking portion body (413 ') is arranged in the exhaust region, the addition, the flap 414 according to the fourth modification of the invention; or arranged in a circular area, or may be arranged in the venting zone and circulation zone. Further, the above-mentioned flap 414 may be formed protruding in a variety of locations, including between the upper portion of the block body portion (413 ') and the lower therewith.
[106]
On the other hand, the rib 415 is formed in plurality may extend in a direction intersecting with the running direction or running direction of the track of the vehicle. At this time, the plurality of ribs 415 are a part extending in the running direction of the vehicle, it extends in a direction intersecting with the rest of the running direction of the vehicle can form a lattice structure. By using this structure to put the raw material falling on the upper surface of the flap 414 it can be used to reverse this inhibition or prevention of the exhaust gas.
[107]
In addition, it is possible to give, while the resistance to the role of exhaust gas flow flowing to ride the top surface of the flap 414, the ribs 415 described above suppress the exhaust gas is biased toward the negative pressure and the negative pressure in the low side.
[108]
7, the blocking portion (414E) according to a fifth modification of the present invention, the blocking portion body (413 ') inclined downwardly at an end of the flap 414, the end portion of the flap 414 in a direction toward protruding from It may further include a tip 416 to be formed. That is, the blocking portions flap (414E) are formed to project to the blocking portion body (413 '), the running direction of the vehicle (10) blocking portion body (413') extending in a direction crossing the running direction of the vehicle (10) 414 may include a blocking portion body (413 ') the tip 416 is inclined downward to the projecting ends of the flap 414, the flap 414 in a direction toward the end of the.
[109]
Tip by 461 smoothly secure the flow-blocking area of ​​the lower wind box flap 414 while it is possible to prevent a collision with the floor of the vehicle (11). If for example, cross-sectional width of the upper end of the wind box facing the flap (414) is 1, the total protruding length of the running direction of the vehicle flap 414 and the tip 416 may be up to more than 0 to 2/3.
[110]
Blocking portion structure according to the above-described modified examples may be variously modified, or is cross-linked to each other.
[111]
On the other hand, the exhaust gas treatment apparatus according to another embodiment (second embodiment) of the present invention may be modified as shown in the form of a suction unit to the structure. For example, a plurality of wind box is provided in the exhaust gas treatment apparatus, moving a plurality of sections and arranged in a mutually separated from the lower part of the vehicle cycle region and the exhaust region to be installed to be processed of a raw material, there is arranged in the running direction of the vehicle At this time, a top end portion of the wind box which is disposed adjacent to the plurality of wind box boundaries of the circular region and the exhaust region of the structure can be projecting above the top end of the other windbox.
[112]
That is, a portion windbox is in a second wind box for sandwiching the boundary of the venting zone and circulation zone located in the first wind box and the air exhaust area, which is located in a circular region a first wind box and the second wind box in contact with the upper end it may be projected upwardly so as to be positioned within a distance of less than 0 100㎜ in the lower face of the vehicle.
[113]
On the other hand, in this case in the gap between the balance and the wind box on the boundary of the venting zone and circulation zone, and more particularly, the first wind box and the at the boundary of the venting zone and circulation zone to seal the gap between the truck and some wind box the second wind box may be installed off the top end portion in contact. Here, the organization and manner blocking portion may be applied the same way, and this configuration block unit according to an embodiment of the present invention as, or similar, and the other configuration of the exhaust gas treatment device can be similar or identical to the embodiment.
[114]
Further, the default block according to a second embodiment of the present invention can be implemented in a variety of formats, including various modifications. In this case, the blocking of the second embodiment variant of the component part of the present invention and the method can cut off the parts of the configuration and method according to a modification of the examples applied to the same or similar embodiments of the invention described above.
[115]
Figure 8 is a schematic view showing the exhaust gas flow inside the suction unit according to a comparative example of the present invention. At this time, there is no suction portion inside the block portion structure according to a comparative example of the present invention, the gap between the suction portion and the balance is for example over a 100㎜ as in the prior art.
[116]
8, first, the comparative example structure with no additional structure, for example blocking of the present invention can be a reverse flow of exhaust-gas in the border region and the circular region. Further, the raw material layer can be concentrated to some degree and the negative pressure side of the circulation area of ​​the exhaust gas that is passed. If the interference rise as a flow, the reduced amount of exhaust gas of the main suction blower connected to the exhaust area to be the operation efficiency is lowered can.
[117]
For example, conventional sintered group there is sufficient clearance for the exhaust gas movement between the windbox and the balance as shown in Fig. When the groups in the sintered structure sintering while applying the off-gas circulation techniques to zoom in on the image area of ​​the sintering machine, the need to install additional blower not to cover the off-gas treatment as a single blower. As such, when the blower is operated on a plurality of additional, the efficiency of exhaust gas treatment by the exhaust gas flows backward in the above-described gap can be reduced. The off-gas free movement between the windbox connected to each other blower in the sintering machine to operate a plurality of blowers may be effective for exhaust gas treatment.
[118]
Embodiments of the present invention and its modification may be used to block parts of the flue-gas treatment in the structure of a blower with two or more efficiently. Hereinafter, to explain the effect of blocking portion in accordance with an embodiment of the invention the exhaust gas flow numerical analysis within the suction part in the comparative example and the embodiment of the present invention will be described and the results.
[119]
Figure 9 is a graph illustrating the results by interpreting the value of the exhaust gas flow inside the suction unit according to a comparative example and an embodiment of the invention the chart. Of Figure 9 (a) is the result of numerical analysis the suction unit inside the flue-gas flow at the perimeter of the venting zone and circulation zone according to a comparative example of the present invention, (b) of Figure 9 is the exhaust according to the embodiment of the present invention region and the suction portion on the boundary, and the result of numerical analysis the inner exhaust gas stream, (c) of Figure 9 is blocked with a blocking portion body and a flap according to a first modified example of the modified examples of the present invention of the circular area portion a suction portion at a boundary of the venting zone and circulation zone for the results of the numerical analysis inside the flue-gas flow.
[120]
That is, (a) to (c) of Fig. 9 is a flow analysis result of calculating the exhaust gas flow changes according to the presence or absence of the blocking body and the flap portion. At this time, the main blower and the pressure difference between the circulation blower was as 200mmAq, interpreted the exhaust gas flow changes in the condition circulation blower has a higher negative pressure. There is shown compared to the 9 (a) and (b), when the comparative example of the present invention to reverse flow of exhaust area, the exhaust gas can be confirmed that the force introduced into the circulation area, that an exhaust gas reflux eliminated in the embodiment of the present invention It can be found.
[121]
In this case, while eliminating many of the off-gas back flow phenomenon in a circular area, a flue-gas on the blocking portions can see that the bias toward the part circular region. At this time, the flow of exhaust gas is such may be started from the inside of the vehicle, since the raw material layer can be within a material layer over the layer and then pores with pore exhaust gas is easily concentrated in a circular area.
[122]
On the other hand, the balance is off must be spaced a predetermined portion on the bottom of the track distance because it continues to run, the exhaust gas flow on the blocked portion biased from within the raw material layer can be introduced toward the upper surface portion ride off cycle region. To inhibit or prevent this, in the modified examples of the present invention, after providing a flap in the block portion, and extending the flap in the direction of travel of the vehicle, without the exhaust gas flow on the blocking part bias using the structure of the flap, each region of the and they were separated by a flowing well.
[123]
Also when compared to the 9 (b) and (c), the back flow of exhaust gas in the structure with the side flaps off than if only the block including the body can see that the well suppressed. That is, the block according to the modified examples of the present invention unit may further comprise a flap, inhibiting the reverse flow of the exhaust gas more effectively. Such embodiment and its modified example of the present invention may be seen that the inhibiting reverse flow of the exhaust gas effectively. Meanwhile, the embodiment of block portion and variation, scale model experiment was measured by the cut-off part of the exhaust gas in the body and change the structure of the flaps is to see whether or not interrupt the flow of the exhaust gas of.
[124]
Figure 10 is a photo photographed the result of a reduced model experiment for the exhaust gas flow inside the suction unit according to a comparative example and an embodiment of the present invention. (A) is a result of the reduced model experiment according to the embodiment of (b) of the result of the reduced model experiment for the comparative example structure of the present invention, Figure 10 is the present invention, (c) of FIG. 10 in Fig. 10 a reduction modeling results for the block unit having a flap according to a first modified example of the modified examples of the present invention.
[125]
In this case, the extending length of the flap is an experiment was performed such that two-thirds relative to the cross-sectional width of the first upper end of the windbox. On the other hand, when the reduced modeling experiment, for example, provide a comparative example to the embodiment and each of the model reduced the aspirator internal structure that geometrically to a variant of the invention, be carried out in a variety of ways using a sintering condition of based sintered it may be omitted specific explanation.
[126]
The experimental results of the reduced model is shown in Fig. Figure 11 is a graph showing the result of a reduced model experiment for the exhaust gas flow inside the suction unit according to a comparative example and an embodiment of the invention the table. Of Comparative Examples are modified examples of the result of the reduced model experiment according to an embodiment of the result of the reduced model experiment for the comparative example structure of the present invention, Example 1 is the present invention, the second embodiment is the invention in Figure 11. The first modified example block unit is the result of a reduced model experiment for blocking portion having a body and a flap.
[127]
Relative to the comparative example results looking at these results, the block portion and in that the structure of Example 1 confirmed that the flow rate of the exhaust gas that is well maintained, the flow rate of the exhaust gas flowing in the circulation area in the second embodiment in that the flap structure 12 increases%, and it can be seen that the total flow increased by 11%. In other words, while suppressing the flow interference in the block addition structure may be seen that maintaining the flow rate of the exhaust gas, it can be confirmed to achieve an inhibition and the exhaust gas flow rate increases the flow interference while in the structure having a barrier flap portion.
[128]
On the other hand, if the reason for the exhaust gas flow flaps of the entire exhaust gas flow and circulation area with the increase are as follows: As the flap by the exhaust region and inhibit or prevent the flow of circulating interference area effectively, it is possible to sufficiently suck the flue gas from the raw material layer on the relatively large air flow resistance cycle region.
[129]
That is, the negative pressure in the circulating region can act all or most of the raw material layer on the air flow resistance larger without interfering with the venting zone cycle region, and of course that this exhaust gas flow rate increases the circulation area, the exhaust gas smoothly in the venting zone because it can be drawn, the flow rate of exhaust gas may be increased before.
[130]
Hereinafter, the exhaust gas processing method that applies to the exhaust gas treatment apparatus according to embodiments of the present invention. Exhaust gas treatment method according to an embodiment of the present invention is charged with raw material on the balance and the process of heat treatment, moves a plurality of sections, the suction by using parts of the process of sucking the inside of the vehicle, the negative pressure of the circulation area and the exhaust area smaller the exhaust gas of the region includes the step of inhibiting the reverse flow toward the clearance between the bogie and the suction unit.
[131]
In this case, the process for the exhaust gas of the smaller negative pressure of the above-described cycle region and the exhaust region domain inhibit the reverse flow toward the clearance between the bogie and the suction unit is, more specifically, the use of parts of blocks provided in the boundary of the circular region and the exhaust region and, an exhaust gas of the circulation area and the exhaust area, the negative pressure, the smaller the area of ​​the process can be suppressed from flowing back toward the gap between the balance and the suction unit.
[132]
First, a preparation of a raw material in the raw material hopper. The raw materials may be mixed minutes and humidity iron ore, limestone, coke and anthracite minutes, and provided to be assembled to this ㎜ particle size and prepared by charging a raw material hopper. At this time, and selecting a sintered ore having a predetermined particle size to the upper beam, it can be prepared by charging it to the upper hopper light.
[133]
Thereafter, the heat-treated while the material charged to the balance to move the plurality of sections.
[134]
This process, the process of driving the truck in a plurality of sections arranged direction, the process by using a raw material hopper for charging the raw material in the balance; By burning the raw material in the ignition while moving the process, it burned for forming the raceway on the inside of the vehicle to the lower portion from the upper portion of the vehicle can comprise the step of sintering the raw material.
[135]
Specifically, after the raw material and the upper light when provided on each of the hopper, along the conveying path in a plurality of sections arranged direction while driving the balance In the upper light on the floor of the vehicle in the loading zone of the plurality of sections, in the raw material on the upper surface of the upper beam to form a raw material layer.
[136]
When the material layer is formed while moving the raw material layer in the order of the ignition interval and the sintering period, to burn the material layer in the ignition zone to form a raceway, while moving the raceway in the sintering section in the lower layer from the upper layer of the raw material layer about 1300 ℃ to a high temperature of 1400 ℃ by heating the raw material layer is sintered into sintered ore.
[137]
With the above-described heat treatment, by using a suction unit sucks the interior of the vehicle, and the remaining exhaust cycle and a portion of the exhaust gas to be drawn on the balance. On the other hand, the suction portion on the bottom of the track extends along the running direction of the vehicle, as the suction portion having a circular area and the exhaust area, separated from each other, may be an above-mentioned suction of the exhaust gas treatment apparatus according to an embodiment of the invention. By the combustion process cost go to the bottom on top of the raw material layer could be the raw material is sintered.
[138]
With the process of sucking the inside of the vehicle, it includes the step of circulation of the negative pressure region and the exhaust region is a smaller area of ​​the exhaust gas inhibit the reverse flow toward the clearance between the bogie and the suction unit. At this time, it is possible to inhibit the exhaust gas backflow using blocking portion provided at the boundary of the circular region and the exhaust region.
[139]
Further, by using parts of blocks as described above in the process of inhibiting the off-gas back flow. A protrusion at least one flue-gas flow by a rib running riding off the upper surface of the portion formed on the top surface blocking portion can be suppressed more effectively.
[140]
On the other hand, the blocking portion and the blocking portion body and the process and the manner in which the reverse flow of the exhaust gas suppressed or prevented by the flap and the rib according to the modified examples according to an embodiment is hayeoteumeuro several times, described above, to avoid duplication of description, that so that explanation thereof is omitted.
[141]
Sintered ore is charged into the interior of the vehicle is completed the sintering is light distribution portion crushed in the end point of the transfer path, and then shredded in the shredding unit with a predetermined particle size, are selected in the screen or in accordance with the particle size supplied by the other processing blast furnace operation, using a top light or screening, it is classified as semi-glossy and can be reused as a raw material.
[142]
According to an embodiment of the present invention by placing a barrier at the boundary of the venting zone and circulation zone can seal the gap between the balance and the windbox. Consequently, it is possible, while producing a sintered ore to reduce or prevent exhaust gas backflow by at the boundary of the venting zone and circulation zone in the circulating exhaust gas to the negative pressure difference between these regions. Thus, it is possible to stably secure the exhaust gas flow rate during operation.
[143]
Moreover, the present case of the variant of the invention, block addition, because of the flap, or a structure having the flap and the rib, may have the effect of increasing both the exhaust gas flow rate is the total flow rate and the circulation of the exhaust gas and thereby the efficiency of the operation can be further improved, it is possible to obtain a high-quality ores.
[144]
The embodiment of the invention is for the description of the invention and is not intended to limit the present invention. Configuration and method shown in the embodiment of the present invention will be modified in a variety of forms in combination or applied intersect each other, it should be noted that to see the modification thereof as the scope of the invention. After all, the present invention will be implemented within the scope of the claims and its equivalent technical idea in many different forms, practitioners of the art to which the invention that is the various embodiments are possible within the scope of the technical concept of the present invention it will be appreciated.

Claims

[Claim 1]Moving a plurality of sections, and the lower portion of the vehicle that is installed to be processed of a raw material and extending in the running direction of the truck, having a circular suction region and the exhaust region, separated from one another; And a cutoff unit that is to seal the gap between the balance and the suction unit, installed on the boundary of the circular region and the exhaust region; exhaust gas treatment device comprising a.
[Claim 2]
The method according to claim 1, wherein the suction portion includes a plurality of wind boxes arranged along the running direction of the truck, and the plurality of wind boxes, and are concatenated, each top end adjacent to the suction portion extending direction, the cut-off blowing the exhaust gas treatment apparatus provided in the upper end of each of the concatenated part windbox other across a boundary of said circular region and the exhaust region of the plurality of wind box in contact with the boundary.
[Claim 3]
The method according to claim 2, the distance between the lower surface of the barrier portion top surface and the balance is greater than 0 or less 100㎜ exhaust gas processing device within an error range.
[Claim 4]
Moving a plurality of sections and arranged in a mutually separated from the lower part of the vehicle cycle region and the exhaust region to be installed to be processed of a raw material, a plurality of wind boxes arranged along the running direction of the truck; including, and one of the plurality of the wind box, the upper end portion of the wind box which is disposed adjacent to the boundary of the circular region and the exhaust region is off-gas processing apparatus which protrudes beyond the upper end of the other windbox.
[Claim 5]
The method according to claim 4, wherein the portion windbox comprises a second wind box which is located in the first wind box and the exhaust region sandwiching the boundary position in the circulation zone, and the first wind box and the second wind the upper end is in contact with the exhaust gas treatment apparatus box which is located within a distance of less than 0 100㎜ from a lower surface of the vehicle.
[Claim 6]
Exhaust gas treatment apparatus including; The method according to claim 5, the blocking portion provided in the balance and, to seal the gap between the part of the windbox wherein the top end is one wind box and the second wind box in contact at the boundary.
[Claim 7]
A method according to any one of claim 1 to claim 3 and claim 6, wherein the blocking portion, the blocking portion body and extending in a direction intersecting with the running direction of the truck; Exhaust gas treatment device comprising; flap that is formed to project to the cutoff unit body in the running direction of the vehicle.
[Claim 8]
The system according to claim 7, wherein the flap is the exhaust gas processing device may be formed on an upper or lower portion of the block body portion, formed between the upper and lower portions of the block body portion.
[Claim 9]
The system according to claim 7, wherein the flap is the exhaust gas processing apparatus which is located in at least one region of the circular region and the exhaust region.
[Claim 10]
The system according to claim 7, wherein the flap is the exhaust gas treatment apparatus for a negative pressure of the circulation area and the exhaust area located in the smaller area.
[Claim 11]
The system according to claim 7, when the cross-sectional width of the upper end of the wind box facing the flap 1, the exhaust gas treatment apparatus of projection length of the flap is more than 0 to not more than 2/3.
[Claim 12]
The system according to claim 7, wherein the blocking unit includes at least one rib that is formed protruding on an upper surface of the flap; off-gas processing apparatus further comprising: a.
[Claim 13]
The method according to claim 12, wherein the rib is the exhaust gas treatment apparatus extending in a direction crossing the running direction of the running direction or the balance of the vehicle.
[Claim 14]
When the method according to claim 13, wherein the plurality of ribs are formed, the exhaust gas processing apparatus wherein a plurality of rib portions thereof are extending in the running direction of the truck, and the other extends in a direction intersecting with the running direction of the vehicle.
[Claim 15]
The system according to claim 7, wherein the blocking portion, the tip is formed to be inclined downward at an end projection of the flap in the direction toward the end of the flap in the block unit body; off-gas processing apparatus further comprising: a.
[Claim 16]
The method according to claim 15, when the cross-sectional width of the upper end of the wind box facing the flap 1, the exhaust gas treatment apparatus entire protruding length of the flap and tip the running direction of the balance is more than 0 to not more than 2/3.
[Claim 17]
The process of heat treatment of a raw material charged on the balance shifts in the plurality of sections; A lower portion of the balance and extends along the running direction of the truck, with the suction portion having a circular area and the exhaust area, separated from each other, comprising the steps of: sucking the interior of the truck; Exhaust gas treatment method comprising; and a process for the exhaust gas of the circulation area and the exhaust area, the negative pressure, the smaller the area of ​​the suppressed from flowing back toward the gap between the balance and the suction unit.
[Claim 18]
The method according to claim 17, with block portions provided at the boundary of the circular region and the exhaust region, the exhaust gas processing method for inhibiting the backflow of the exhaust gas.