1]The present invention relates to a cyclone connected to the melting furnace is applied to the FINEX process, and particularly, to a dust collecting in the dust contained in the incoming gas and to reduce clogging due to the dust collecting cyclone.
BACKGROUND
[2]FINEX (FINEX) method is environment-friendly steel making process to reduce capex and pollutant emissions by the iron ore and coal in powder form are inexpensive to produce molten iron used directly without processing. In addition, Finex ironmaking process is an efficient method than the method korekseu to use the existing height of the blast furnace process or costly raw Dunn put the iron ore and coke nokyeonae the charter blowing warm from top to bottom of about 100m.
[3]
On the other hand, the melting furnace for the FINEX process, the oxygen is being blown through the tuyere, the blown oxygen is burned to generate a gas generating furnace (gas generator). Generating gas contains a large amount of dust (dust), and had a temperature of around 1000 ℃. Generated gas is discharged from the upper dome of the melting furnace reacts with the cooling gas is adjusted to a temperature of 720 ℃ to 750 ℃, it flows into the hot-gas cyclone (hot gas cyclone). Generating gas generates a centrifugal force as the rotation enters the hot-gas cyclone. In this case, the dust in the hot-gas cyclone the dust is contained in the generated gas by the centrifugal force, whereby the damping action takes place. Dust collector is as the flow to the lower side is blown to the material inside the furnace through the dust burner after passing through the grid (grid) disposed inside the lower portion of the hot gas cyclone. In this case, the grid is to reliably induce the dust to the lower side of the hot-gas cyclone functions to prevent clogging of the inlet tube of the melter.
[4]
However, the dust is also attached to the grid in the process of being guided to the lower side, and also if the grid is clogging occurs. Therefore, the dust failure to pass through the grid, it is not smoothly blown material in the melting furnace, the level of dust inside the hot-gas cyclone is raised. In addition, the generated gas is also supplied to the fluidized-bed in a state including the dust they cause degradation in the operation of the flow. Thus, as a grid is clogged by the dust from the hot-gas cyclone, a situation that does not smoothly recycling the dust and the subsequent step.
[5]
[Prior art document]
[6]
[Patent Document]
[7]
[Patent Document 1] Utility Model Registration No. 20-0298122 call (gonggoil: December 12, 2002)
[8]
(Patent Document 2) Patent Publication No. 10-2009-0031495 No. (Publication date: Mar. 26, 2009)
[9]
(Patent Document 3) Utility Model Registration No. 20-0308395 call (gonggoil: March 26, 2003)
Detailed Description of the Invention
SUMMARY
[10]
The invention reduces the cost due to the dust collector by plugging smoothly blown material in a melting furnace dust to provide a cyclone dust recycling and to improve the subsequent step.
Problem solving means
[11]
The present invention has a main body portion for guiding the lower side by the dust collector from the inlet gas; Made of a planar shape, a plurality of first openings are formed, the first grid portion which is located inside of the main body; And made of a three-dimensional shape having a bottom is open interior space, a plurality of second openings are formed, the sayikeulronreul disclosed characterized in that it comprises a second grid portion being located on a portion of said first grid.
[12]
In addition, the dust is guided to the lower side is sayikeulronreul disclosed, characterized in that after passing through the second opening to the first opening of the first grid portion and the second grid portion to be supplied to the melting furnace from the main body portion.
[13]
Further, the second grid portion initiates the cyclone, characterized in that positioned in the center of the first grid portion.
[14]
Also discloses a cyclone, characterized in that located inside the main body in an inclined state of the first grid portion.
[15]
In addition, the first being formed first grid portion on the edge portion the first grid is fixed, the first grid fixed portion of the cyclone, characterized in that connected to the first grid mounting portion formed along a circumferential direction of the body portion with the inner surface of the body portion It discloses.
[16]
In addition, the first and second grid fixed portion formed in the lower end two grid parts in the peripheral direction of the second grid, the second grid fixed portion is formed so as to correspond to the second grid fixed on the first grid portion the discloses a cyclone, characterized in that the mounting portion connected to the second grid.
[17]
In addition, the first is that is one of the first opening wherein the first grid area, parts of some location discloses a cyclone, characterized in that corresponding to the second grid, an open bottom portion.
Effects of the Invention
[18]
Cyclones according to the present invention is reduced due to the clogging of the dust collector has an effect of dust smoothly to ensure that re-taken into the furnace and increase the recycling process after the dust.
Brief Description of the Drawings
[19]
1 is a view showing a cyclone according to the preferred embodiment of the invention.
[20]
2 is a perspective view showing the first grid and the second grid portion in the cyclone shown in Fig.
[21]
3 is a diagram showing the appearance of the cyclone has been applied to the FINEX process shown in Fig.
Best Mode for Carrying Out the Invention
[22]
Described in detail below with reference to the accompanying drawings, preferred embodiments of the present invention. In the following description of the present invention, a detailed description of known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.
[23]
Figure 1 is a cyclone 100 in the figure, and the cyclone 100, the first grid 102 and second grid 103 in shown in Figure 2 is one diagram showing the according to an embodiment of the present invention a perspective view showing, Fig. 3 is a view showing a state that the cyclone 100 is shown in Figure 1 applied to the FINEX method.
[24]
As shown in Figure 1 to Figure 3, the cyclone 100 according to the preferred embodiment of the present invention includes a body portion 101, a first grid 102 and second grid 103, the furnace receiving (10) is connected to supply the gas from the melting furnace 10, a vibration damping action is made by the dust collector (dust) contained in the gas. Further, the dust in the cyclone dust collection unit 100 is blown to the material melting furnace 10. Here, the melting furnace 10 in this embodiment may be applied to various steel process is not limited, but is shown as being applied to the FINEX process, and thus.
[25]
Body portion 101 is connected to the melting furnace 10. At this time, the upper portion of the body portion 101 is formed of a cylindrical shape and connected to the upper portion of the melting furnace 10, a lower portion of the body portion 101 is made of an inverse conical shape is connected to the lower portion of the melting furnace 10. The gas produced in the melting furnace 10 is introduced into the inside of the main body 101 through the upper portion of the body portion 101. The gas flows into the interior of the body portion 101 is rotated to create a centrifugal force, the dust contained in the incoming gas is in the interior of the collector body portion 101 by a centrifugal force. At this time, a centrifugal force will act as a central axis corresponding to a vertical direction of the body portion 101. The dust collecting dust is guided to the lower side of the body portion 101 along the inner surface of the body portion 101 (see arrows in Fig. 1). The dust guided to the lower side of the main body part 101 is blown into the molten material through the lower surface of the body portion 101 (10). That is, the body portion 101 performs a function of a general cyclone, subjected to a vibration damping action of the gas produced in melting furnace 10 is used to recycling the dust contained in the gas.
[26]
The first grid 102 is composed of a planar shape, and is formed with a plurality of the first opening (102a). The first grid 102 is located inside the lower part of the body portion 101, it is positioned on the moving path of the dust. Therefore, the dust is guided to the lower side from the main body portion 101 is passed through the first opening (102a). In addition, the dust may be re-taken into the first furnace 10 through the lower face of the opening (102a) to uniformly flow reliably body portion 101 by passing through.
[27]
On the other hand, the first grid 102 is located inside the lower part of the body portion 101 in an inclined state. Further, by the centrifugal force due to the gas in the interior of the body portion 101, dust can be guided toward the top of the first grid portion (102). At this time, dust may pass through the opening (102a) to be movable along the slopes of the first grid portion (102). Accordingly, the dust can no longer be stored in the first grid portion (102).
[28]
The second grid 103 is made up of three-dimensional form having an interior space with an open bottom. At this time, the outer surface of the second grid portion (103) has a second opening (103a) are formed. The second grid 103 is positioned on a portion of the first grid portion (102). On the other hand, in this embodiment, the second grid portion 103 is a part of the first grid 102 is located is, but is shown as being open as a whole by the single first opening (102a), to the first, as appropriate It may be an opening (102a) are formed.
[29]
The second grid 103 is in the case 1 in combination with a grid section 102, only the grid portion made of a corresponding shape to the first grid section 102 in the lower portion of the body portion 101 is installed or the second grid, It provides a large surface area compared to the case where only the grid portion made of a shape corresponding to the unit 102 is installed. Therefore, when the same size apertures are applied, the wider the area of ​​the dust passes through. The gap is formed by in a first grid 102 and second grid 103 to the first opening (102a) and second opening (103a) is 100㎜. Due to the spacing of the dust it is smoothly passed through the first opening (102a) and second opening (103a).
[30]
The second grid 103 is preferably positioned in the center of the first grid portion (102). In general, the dust-collecting dust is guided downwardly along the inner surface of the body portion 101. Therefore, the dust is guided to the first grid portion 102 than the second grid portion (103). On the other hand, due to dust it may cause a clogging of the first grid portion (102). In this case, dust can be guided toward the first opening (102a), even if not pass through the first grid portion 102, a second grid portion 103 along the first grid portion (102). Further, dust is second opening (103a) formed in the second grid 103, in particular the second side of the grid 103 (i.e., if formed in the vertical direction in the second grid portion 103 of the first) pass through and be guided toward the lower surface of the body portion 101. Therefore, dust can be guided to the lower side of the first grid 102 and second grid portion to smooth the body portion 101 by 103.
[31]
On the other hand, a second grid section 103 in the present embodiment has the side surface formed in a vertical direction yirumyeonseo a cross section of a rectangle. Therefore, the dust is not guided to the lower side in the process of being mounted on the second grid portion (103). That is, the second grid portion 103 may be reliably used to drive the dust even if the first grid portion 102 are blocked by the lower side of the body portion 101.
[32]
In addition, generally from the melting furnace 10 to be applied to the FINEX process considering the amount of gas flowing into the main body portion 101, a second grid portion 103 of 400㎜ width, the length and the 800㎜ 600㎜ it is formed into a shape having a height being preferred. Therefore, even if the clogging of the first grid 102, dust may be sufficient to pass through the opening (103a) of the second grid portion (103).
[33]
The first grid 102 and second grid 103 of the present example, the cyclone 100 can be significantly reduced clogging due to dust induced to the lower side of the combination is the main body section 101 with each other. As a result, the dust in the cyclone dust collector 100 can be smoothly re-blown in the melting furnace 10, it is unnecessarily accumulated in the inside of the cyclone 100 is not supplied to the passage 20. Accordingly, the cyclone 100 of this embodiment is to facilitate the recycling dust, but also so smoothly process takes place in a melting furnace 10 and a flow is connected to the cyclone 100, 20.
[34]
On the other hand, the first grid 102 and second grid 103 is composed of the dust clogged in contact with, or may even be damaged. Therefore, the first grid 102 and to a second grid portion 103 is also, and replacement needs to be replaced should be removed and installed. Accordingly, the example cyclone 100 of this embodiment includes the following components:
[35]
Body portion 101 has a first grid to form a mounting portion and a first grid fixed part 121, a first grid portion 102, 111 is formed.
[36]
A first grid mounting portion 111 is positioned along the circumference of the body portion 101 from the inner side surface of the body portion 101 is formed so as to project from the inner surface. At this time, the first grid mounting portion 111 is formed inside the lower part, that is, the position where you want to position the first grid portion 102 of the body portion 101.
[37]
A first grid fixed part 121 has a size corresponding to the size of the first formed along the edge of the grid 102, the first grid mounting portion (111). Accordingly, when the first grid fixed part 121 is connected to the first grid mounting portion 111, a first grid portion 102 is located inside the lower part of the body portion 101. At this time, the first grid mounting portion 111 and the first grid fixed part 121 has not been shown in detail bolts may be fixed in a variety of forms such as using a nut. Therefore, the first grid portion 102 can easily confirm the position to be installed on the main body portion 101 can be easily separated, and the body portion 101 from.
[38]
Furthermore, the first grid 102, the second grid mounting portion 123 is formed in the second grid 103 is formed with a second grid fixed part (131).
[39]
A second grid fixed part 131 is first formed on the lower edge of the grid 103, a second grid mounting portion 123 is formed on the first grid portion 102, a second grid fixed part 103 to consist of corresponding size and shape. In addition, the second grid 103 so that the can be placed in the center of the first grid 102 and second grid mounting portion 123 is also formed in the center of the first grid portion (102). Thus, when the second grid fixing part 131 is connected to the second grid mounting portion 123, a second grid 103 is positioned on the first grid portion (102). The second grid like mounting portion 123 and the second fixed grid 131. Fig first grid mounting portion 111 and the first grid fixed part 121 may be secured in a variety of forms. Therefore, the second grid portion 103 may easily confirm a position to be installed on the first grid portion can be easily separated from the (102), and the first grid portion (102).
[40]
Due to the components as described above, the first grid 102 and second grid 103 in the example a cyclone (100) of this embodiment can be easily replaced.
[41]
Above has been described with respect to certain preferred embodiments thereof, various modifications are possible within limits that do not depart from the scope of the present invention will be apparent to a person of ordinary skill in the art.
[42]
Reference Numerals
[43]
100: Cyclone
[44]
101: body portion
[45]
111: first grid mounting
[46]
102: first grid portion
[47]
102a: first opening
[48]
121: first grid fixing
[49]
123: second grid mounting
[50]
103: second grid portion
[51]
103a: second opening
[52]
131: second grid fixing

Claims

[Claim 1]The main body portion for guiding the lower side by the dust collector from the inlet gas; Made of a planar shape, a plurality of first openings are formed, the first grid portion which is located inside of the main body; And made of a three-dimensional shape having a bottom is open interior space, a plurality of second openings are formed, the cyclone, characterized in that it comprises a second grid portion being located on a portion of said first grid.
[Claim 2]
The method of claim 1, wherein the dust is guided to the lower side is a cyclone, characterized in that after passing through the second opening to the first opening of the first grid portion and the second grid portion to be supplied to the melting furnace from the main body portion.
[Claim 3]
The method of claim 1, wherein the cyclone, characterized in that located inside the main body in an inclined state of the first grid portion.
[Claim 4]
Claim characterized in that in one of the preceding claims, in which the first and the formation the first grid fixed portion first grid portion edge, connected to the first grid fixed portion first grid mounting portion formed along a circumferential direction of the body portion with the inner surface of the body portion cyclone of.
[Claim 5]
The method of claim 1, wherein the lower edge of the second grid, and a second grid fixed portion is formed in the peripheral direction of the second grid, the second grid fixed portion of the first grid portion on the second grid fixed to the cyclone, characterized in that connected to the second grid and the mounting portion is formed so as to correspond.
[Claim 6]
According to claim 1, wherein there is a one first opening the partial area 1 grid position of the parts the cyclone, characterized in that corresponding to the second grid, an open bottom portion.