Art
[1]The present invention relates to a hydrogen production facility and method of hydrogen production, and more particularly to recycling the gas which is by-produced in the ironmaking process, a hydrogen production facility and method of hydrogen production to produce hydrogen.
BACKGROUND
[2]It contains a large amount of carbon dioxide is by-product gas generated in the steel making process, if carbon dioxide is emitted into the atmosphere as it is a cause of environmental pollution. Therefore, by converting the by-product gas of the carbon dioxide generated in the steel making process with hydrogen, a continued attempt to re-use to a power plant or steel manufacturing line and process for a number of devices, for example, power generation require hydrogen.
[3]On the other hand, of the steel making process, to blow oxygen into the melter-gasifier and melting the reduced iron A by-product gas generated in the molten iron manufacturing facility FINEX (finex) type for producing molten iron, the heat-rich CO and H 2 can contain. Thus, FINEX-product gas: it is effective in producing hydrogen by use of a (FOG Finex off gas).
[4]By the way, according to producing hydrogen by use of a FINEX-product gas, and a large amount of steam is needed for the cooling and by-product hydrogen produced in the gas at a high temperature, the steam is procured prepared from the outside of the hydrogen production plant. Therefore, there is a problem that a large amount of steam supply and thus the cost is increased production of hydrogen in accordance with.
[5](Prior patent document)
[6]Korea Patent 10-1321930
Detailed Description of the Invention
SUMMARY
[7]The present invention provides a hydrogen production plant and a method of hydrogen production which reduces the production cost of hydrogen.
[8]The present invention reduces the amount of steam (steam) supplied from the outside to the hydrogen produced, thereby providing a hydrogen manufacturing facility and a method of hydrogen production which can reduce the cost of hydrogen production.
Problem solving means
[9]Hydrogen production plant according to the invention receives the service-product gas generated in the steel making process, the heat recovery apparatus for recovering heat from the product gas; The heat receiving provide a by-product gas discharged from the recovery device, by increasing the hydrogen concentration in the product gas, high-concentration hydrogen-containing hydrogen amplifier to produce gas; The heat recovering device and connected to at least one of the hydrogen amplifier, at least one of the thermally exchanging the high concentration hydrogen-containing gas generated in the heat recovery unit with steam and the hydrogen amplification device occurs during heat recovery of the by-product gas from the generated steam, hydrogen gas treatment device for supplying one of the hydrogen amplification device; And a hydrogen separation unit to separate hydrogen from high-concentration hydrogen-containing gas supplied through the hydrogen gas treatment apparatus; and a.
[10]Once a connection to the heat recovery unit and the other end is connected to the hydrogen amplification apparatus, wherein the steam for supplying the waste gas discharged from the heat recovery unit of the hydrogen amplification apparatus, wherein the hydrogen gas treatment device hydrogen amplifier It includes a by-product gas transport pipe for feeding.
[11]The hydrogen gas treatment apparatus of the by-product gas in the heat recovery unit to heat exchange with the high concentration hydrogen-containing gas discharged from the hydrogen amplifier generate steam, and comprises a heat exchanger to drop the temperature of the high-concentration hydrogen gas, by moving the steam and at least one of the steam generated by said heat exchange occurs in the heat recovery by the by-product gas transport pipe supplying steam to mix with the product gas; and a.
[12]The hydrogen gas treatment apparatus is connected with the hydrogen amplification device comprising: a first hydrogen gas moving pipe for discharging the high-concentration hydrogen-containing gas from the hydrogen amplification device; A first heat exchanger to the first is connected to the hydrogen gas transport pipe, the heat exchange of the by-product gas moving by-product gas and the mixed gas with a high concentration hydrogen-containing gas is mixed with steam supplied through the pipe; The first is connected to the primary heat exchanger, the second heat exchanger for heat exchanging the first heat the high concentration hydrogen-containing gas recovered from the heat exchanger; And it is connected to the first heat exchanger and the second heat exchanger, a second hydrogen gas transport pipe for moving the first column of the high concentration hydrogen-containing gas recovered from the heat exchanger to the second heat exchanger; includes.
[13]The steam supply unit, one end is connected to the heat recovery unit, the first mobile steam pipe for discharging the by-product steam from the heat recovery unit; Once the first is connected to the second heat exchanger, the high concentration hydrogen-containing second steam transport pipe for the gas to move the steam generator of the heat exchange; and including, the first and second respective steam transport pipe the other end of the It is connected to the by-product gas transport pipe.
[14]Said first heat exchanger is provided on the by-product gas extending path, said first heat exchanger is installed downstream of the point where the first and the steam and the waste gas supplied from the second steam transport pipe each mixture.
[15]Is associated with the heat recovery device and a second heat exchanger, respectively, it comprises a heat recovery medium transport pipe for supplying a heat recovery medium for heat exchange.
[16]Wherein the amplifier is a plurality of hydrogen provided.
[17]To remove the containing of the product gas discharged from the heat recovery unit the sulfur include sulfur removal unit for supplying hydrogen to the amplifying apparatus.
[18]Compressing a high-concentration hydrogen-containing gas supplied from the hydrogen gas treatment device by increasing the pressure comprises a compressor for the supply of the hydrogen separation device.
[19]It includes an oxygen remover for removing oxygen from the hydrogen gas discharged from the hydrogen separation device.
[20]Hydrogen production method according to the invention a heat recovery step of recovering heat of the product gas generated in the steel making process; The heat recovery hydrogen amplification process to increase the hydrogen concentration in the product gas via the process of producing high concentration hydrogen-containing gas; Includes,; and a hydrogen separation step of separating the hydrogen in the high concentration hydrogen-containing gas generated in the hydrogen amplification
[21]The hydrogen amplification process, the heat recovery process of the steam and the hydrogen amplification of high-concentration hydrogen-containing heat recovery process wherein at least one of the steam generated by heat exchange of the gas generated by the occurrence in the heat recovery of the by-product gas from the the process of mixing and rough waste gas; And a process of reacting the by-product gas and steam; includes.
[22]The hydrogen amplification process, including the process of the high concentration hydrogen-containing gas and the heat exchange generated by the steam and the waste gas is a mixed gas to the hydrogen amplification.
[23]Generating the steam generated by the high concentration of heat exchange with the hydrogen-containing gas generated by the hydrogen amplification process, and the high concentration hydrogen-containing gas generated by the hydrogen amplification process, the steam and the waste gas is a gas mixture first heat exchange process of the heat exchange; It includes; the primary heat exchange contains a high concentration by the gas exchange medium and the heat of hydrogen via a heat exchange process, the process of generating steam.
[24]The steam by-product gas and the gas mixture is heated up to the temperature required for hydrogen amplification reaction by heat exchange action with the high concentration hydrogen-containing gas.
[25]The hydrogen amplification process involves a plurality of hydrogen amplification.
[26]Between the heat recovery process and the hydrogen jungpok process includes a process of removing sulfur from the waste gas.
[27]Between the hydrogen amplification process and the hydrogen separation process includes a compression process of compressing the high concentration hydrogen-containing gas.
[28]After the hydrogen separation process includes an oxygen removal step of removing the oxygen from the separated hydrogen gas.
Effects of the Invention
[29]According to embodiments of the present invention, produces steam (steam) using the heat generated in the hydrogen production step, and recycling it back to the hydrogen production process. Thus, it is possible to do the steam required for the hydrogen generation can be jodal by the hydrogen production equipment, reduce the amount of steam produced is supplied from the outside, or not used. Therefore, it compared with the conventional, and reduces the steam production cost for hydrogen production, thereby, there is an effect that the hydrogen production costs.
Brief Description of the Drawings
[30]
Figure 1 is a view of the fish hydrogen plant according to a first embodiment of the molten iron production facility and the present invention
[31]
Figure 2 is a view of the fish hydrogen plant according to a second embodiment of the present invention
[32]
Figure 3 is a view of the fish hydrogen plant according to a third embodiment of the present invention
[33]
Figure 4 is a view of the fish hydrogen plant according to a fourth embodiment of the present invention
[34]
Figure 5 is a view of the fish hydrogen plant according to a fifth embodiment of the present invention
[35]
Figure 6 is a steam supply form into the small number of amplification apparatus according to the process heat recovery according to a hydrogen fish facility in use to the ratio of the CO amount of steam / by-product gas supplied to the hydrogen amplification apparatus according to the first embodiment (of steam / CO) a graph display
Mode for the Invention
[36]
With reference to the accompanying drawings, the present will be described in more detail in an embodiment of the invention. However, the present invention is not limited to the embodiments set forth herein will be embodied in many different forms, but the embodiment are also the teachings of the present invention to complete, and will fully convey the concept of the invention to those of ordinary skill It will be provided to make known. Same numerals in the drawings refers to the same element.
[37]
The present invention by recycling gas (hereinafter referred to as by-product gas) which is by-produced in the ironmaking process, to a hydrogen production facility and method of hydrogen production to produce hydrogen. More particularly, the FINEX (finex) using the composition of the by-product gas of the heat source comprises iron making process provides a hydrogen production plant and a method of hydrogen production to produce hydrogen. In addition, the production of steam (steam) using a column (hereinafter referred to as process heat) generated in the hydrogen production step, and recycling it back to the hydrogen production process. Thus, it is possible to do the steam required for the hydrogen generation can be jodal by the hydrogen production equipment, reduce the amount of steam produced is supplied from the outside, or not used. Therefore, it compared with the conventional, and reduces the steam production cost for hydrogen production, thereby, there is an effect that the hydrogen production costs.
[38]
Reference to FIG 1, description will be made of a hydrogen production plant according to the first embodiment of the present invention.
[39]
1 is a view showing a hydrogen fish facility in accordance with a first embodiment of the molten iron production facility and the present invention. 2 is a view showing the hydrogen fish equipment according to a second embodiment of the present invention. 3 is a view showing a hydrogen fish equipment according to a third embodiment of the present invention. Figure 4 is a view showing the hydrogen fish equipment according to a fourth embodiment of the present invention. 5 is a view showing a hydrogen fish equipment according to a fifth embodiment of the present invention.
[40]
[41]
First, an overview of the molten iron manufacturing facility. Referring to Figure 1, the molten iron manufacturing facility in the reduction of manufacturing reduced iron by reduction of iron ore (2), and melting the reduced iron produced in the reduction (2) including the melter-gasifier (1) for producing a hot metal.
[42]
The reduction (2) is produced reduced iron by removing oxygen from the pretreated ore by drying or heating. In this case, the reduction in (2) using the reducing gas generated in the reduced iron melted in the melter-gasifier (1) The reduction of iron ore. More specifically, the processing of iron ore pre-treatment state, which contains a lot of oxygen (Fe 2 O 3 , FeO 4 a), the iron ore react with the reducing gas supplied from the melter-gasifier (1) (Scheme 1 and 2) and oxygen is removed, whereby the oxygen is less containing FeOx (x is changed from 0 to 1.3), or Fe type is the reduced iron. At this time, the gas of high temperature in the reducing furnace is water vapor (H as shown in Scheme 3 2 O) - can be a transfer reaction (water-gas reaction) between the gas generation (Scheme 3).
[43]
Scheme 1) 1 / 3Fe 2 O 3 + CO / H 2 -> Fe + 2/3 CO 2 / H 2 O
[44]
Reaction Scheme 2) 1 / 4Fe 3 O 4 + CO / H 2 -> Fe + 3/4 CO 2 / H 2 O
[45]
Scheme 3) CO + H 2 O -> CO 2 + H 2
[46]
[47]
Or iron ore which is supplied to the reducing furnace (2) is a fine iron ores, the compacted irons may be in pellets or briquettes of iron ore screen form. For example, when it is in a reducing (2) iron ore is introduced, by reduction (2) may be provided as a plurality of, fine iron ores is over the course of 2 to a plurality of reduction in sequence, it may be gradually reduced to . As another example, if the iron ore in the reducing the compacted screen (2) is turned on, may be provided with one or more than one moving bed (moving bed).
[48]
The melter-gasifier (1) melts the reduced iron produced in the reduction (2). To this end, charging the reduced iron and a heat source seonghyeongtan and pulverized coal to the upper side of the melter-gasifier 1 and oxygen (O to the lower side 2 when blown), the high temperature and reducing gas is generated by a combustion reaction, such as oxygen and seonghyeongtan , so that the reduction and melting to remove oxygen in the reduced iron is produced up the molten iron (or molten iron). And the reducing gas generated from the melter-gasifier (1) is supplied to the reducing furnace (2), are recycled sikineunde reduction of iron ore.
[49]
And, as described above, the reducing gas in the melter-gasifier 1 is supplied to the reducing furnace (2) sikimyeo reduction of iron ore, wherein the iron ore is reduced in the reducing furnace (2). That is, the reducing gas in the melter-gasifier (1) is supplied to the reducing furnace (2) and the combustion air or oxygen and the coal and fine coal, iron ore by the reducing gas, wherein the heat generation is reduced and molten. At this time, the generated reducing gas is a high temperature of 600 to 350 ℃ ℃, mainly CO, H 2 , CO 2 , H 2 O, N 2 , a small amount of CH 4 , O 2 , and the like. At this time, for a total volume of the by-product gas generated from the reducing furnace (2) CO 10 to 40%, H 2 10 to 40%, H2O may comprise 5 to 35%.
[50]
[51]
Hydrogen production equipment and how hydrogen production, according to an embodiment of the present invention is to produce hydrogen using the by-product gas generated in the reducing furnace of the above-mentioned molten iron manufacturing facility.
[52]
Referring to Figure 1, a heat recovery apparatus of hydrogen production equipment according to the first embodiment recovering heat of the product gas discharged from the reducing furnace (2), removed by collecting a small amount of iron ore fine powder (or particles) (100 ), column by increasing the number of devices (the hydrogen concentration of 100), the by-product gas derivative is removed from the hydrogen amplification device 200 for producing a product gas hydrogen concentration is high (hereinafter referred to as high-concentration hydrogen-containing gas), a heat recovery device ( 100) and is connected to at least one of the hydrogen amplification device 200, to open the high concentration hydrogen-containing gas generated in the steam and the hydrogen amplification device 200 occurs during heat recovery of the by-product gas in the heat recovery unit 100 from the high concentration hydrogen-containing gas supplied through the steam supply apparatus 3000, a hydrogen gas processing device 1000 that includes a hydrogen gas processing device 1000 for supplying at least one of a steam generator by exchange with hydrogen amplifier 200 Number And a hydrogen separation device 300 that separates a cow.
[53]
Heat recovery unit 100 to produce steam from the waste gas resulting from the reduction of the (2) 300 ℃ to 600 ℃. More specifically, the production of steam by using a reaction through the heat exchange action between the heat recovery apparatus 100 includes a by-product gas in a high temperature and a temperature lower than the heat recovery media. To this end, the reduction in (2) and a heat recovery device 100, by-product gas moves to connect the pipe (hereinafter referred to as the first by-product gas transport pipe 110) is provided.
[54]
Heat recovery apparatus 100 according to the embodiment is, for example, is installed in the reactor, the reactor having an internal space, may comprise a heat exchange means comprising a product gas and a heat recovery medium pipes, each running separately, wherein the by-product gas and heat and steam generated by the heat exchange effect due to the temperature difference between the number of media, wherein the by-product gas is dropped to about 250 ℃ the heat recovery unit specific than (100) 230 ℃ to 350 ℃, while passing through an example.
[55]
Embodiment uses water as a heat recovery medium, To this end, the heat recovery unit 100 is provided with a heat recovery medium feed pipe (120) which passes through the heat recovery media and mobile is connected to.
[56]
On the other hand, the heat recovery medium is not limited to the above-mentioned water, there may be used a variety of materials that can generate steam by heat exchange action.
[57]
The steam generated in heat recovery unit 100 is discharged from the heat recovery unit 100 is recycled to the increase of the hydrogen concentration in the hydrogen amplification device 200 hereinafter. To this end, the heat recovery unit 100 is passed through a steam and a steam transport pipe (hereinafter referred to as first steam transport pipe 2100) connected to move.
[58]
Further, the heat recovery device 100 may include more functions, as well as steam production function through the heat exchange action of the by-product gas, to remove trapped, the by-product gas of the iron ore powder. To this end, the reactor interior of the heat recovery device 100 may include a filter capable of separating the gas and the fine powder or fine particles. In other words, the heat recovery apparatus 100 may be a device equipped with the heat exchange means and the filter.
[59]
The differential in the heat recovery unit 100 is separated, it is removed by-product gas will be supplied to the hydrogen purification amplifier 200. The The heat recovery unit 100 and the by-product gas transport pipe (hereinafter referred to as second by-product gas transport pipe 140) to connect the hydrogen amplification device 200 is provided for this purpose. Thus, the purified waste gas is supplied to the hydrogen amplification device 200 via a second by-product gas transport pipe (140).
[60]
The purified by-product gas that has to become the hydrogen concentration increases in the reaction in a hydrogen amplifier 200 to be heated to the temperature of the purified product gas in facilitating the reaction temperature. Further, the by-product gas of CO, H refining the hydrogen amplification apparatus (200) 2 O and CO 2 reaction is the hydrogenation, such as is the exothermic reaction, the high concentration hydrogen-containing gas generated in this reaction is that the temperature is high at about 450 ℃ in order to remove hydrogen from the hydrogen separation apparatus 300, it is effective to lower the temperature.
[61]
According to an embodiment of the present invention is not as mobile as a hydrogen separation device 300 is a high concentration hydrogen-containing gas generated by the hydrogen amplification apparatus 200, by using the heat of the high concentration hydrogen-containing gas flowing into the hydrogen amplification device 200 thereby raising the temperature of the purified product gas. That is, the heat of the high concentration hydrogen-containing gas and the purified product gas, the temperature was raised to the purified product gas is supplied to the hydrogen amplification apparatus 200. The Further, at this time the by-product gas and the high concentration hydrogen-containing gas which heat exchange purification has the effect that the temperature is lowered by the heat exchange action.
[62]
Further, in the embodiment of the present invention will be recycled to increase the hydrogen concentration of the by-product steam from the heat recovery apparatus 100 in the hydrogen amplification apparatus 200. The
[63]
Accordingly, to the present invention, in order to re recycled to increase the hydrogen concentration of the by-product steam from the steam and the heat, the heat recovery unit 100 using a high-concentration hydrogen-containing gas generated by the hydrogen amplification device 200, a steam supply (3000 ) and a.
[64]
A steam supply unit (3000) is open to generate steam and the high concentration hydrogen gas treatment apparatus 1000 to drop the temperature of the hydrogen gas and the heat recovery exchanger to said high-concentration hydrogen-containing gas discharged from the hydrogen amplification device 200 Transfer to 100, the steam, and a second by-product gas transport pipe 410, at least one of the steam generated by the hydrogen gas treatment device 1000 occurs during heat recovery of the by-product gas from the steam supply portion for mixing the by-product gas and a (2000).
[65]
Hydrogen gas processing apparatus 1000 is connected to the hydrogen amplification device 200, a first hydrogen gas transport pipe 1100, a first hydrogen gas moving pipe for discharging the high-concentration hydrogen-containing gas from the hydrogen amplification apparatus 200 (1100, ) and is connected to the second primary heat exchanger 1300, a first heat exchanger (1300 of by-product gas transport pipe 410 by-product gas and the steam to the heat exchange the gas mixture with a high concentration hydrogen-containing gas mixture which is supplied through the ) is associated with, and connected to the first heat exchanger 1300 in the second heat exchanger (1400), the first heat exchanger 1300 and the second heat exchanger (1400) to heat exchange the high concentration hydrogen-containing gas with heat recovered from the and the second comprising hydrogen gas transport pipe 1200 for moving the first column contains the number of high-concentration hydrogen gas from heat exchanger 1300 to the second heat exchanger (1400).
[66]
A steam supply portion (2000) has one end connected to the heat recovery unit 100, a first steam transport pipe 2100, one end of the second heat exchanger (1400) for discharging the by-product steam from the heat recovery unit 100 is connected to, and connected with a second steam transport pipe 2300, once the first and second steam transport pipe (2100, 2200) for moving the steam generated in the heat exchange in the high concentration hydrogen-containing gas, the other end is the first 2 is connected to the by-product gas transport pipe 4100 comprises a third steam transport pipe 2300.
[67]
It will now be described in more detail for the hydrogen gas treatment apparatus 1000, and a steam supply unit (2000) according to an embodiment of the invention.
[68]
Of the purified product gas CO and H 2 to be supplied to the steam to react with O, in the embodiment of the present invention as described above, it uses the steam generated during the production of hydrogen in a hydrogen production plant. In other words, uses the steam to be by-produced in the second heat exchanger (1400) to recover heat of the steam and the high concentration hydrogen-containing gas is by-produced in the above-described heat recovery unit 100. To this end, the second steam transport pipe (hereinafter referred to as second steam transport pipe 2200), install, and first and second steam transport pipe (2100, 2200 to move by discharging the steam generated from the heat exchanger 1400 ) to be a third connection for steam transport pipe 2300 to be supplied to the first heat exchanger (1300) to the moved shear steam on a second by-product gas transport pipe 140 extending path. That is, the third steam transport pipe 2300 is one end connected to the first and second steam transport pipe (2100, 2200) and the other end is connected with the second by-product gas transport pipe (140). Thus, the steam generated in the steam and the second heat exchanger 1400 is generated in the heat recovery unit 100 is mixed in a third steam transport pipe 2300, the mixed steam to the second by-product gas transport pipe 140 It is mixed with the waste gas from the purification. Then, the steam and the mixed product gas is first when the inlet to the heat exchanger (1300), by heat exchange action with the high-concentration hydrogen-containing gas supplied to the first heat exchanger (1300), mixed with steam, by-product gas the temperature is preferably 300 to 400 ℃ ℃ is raised to 350 ℃ is supplied to the hydrogen amplification apparatus.
[69]
Hydrogen amplifying device 200 is a device for increasing the hydrogen concentration in the purified product gas from the heat recovery unit 100. Hydrogen exemplary amplifier 200, the containing of the purified product gas CO and H according to the example 2, the O H 2 , by switching to and increase the hydrogen concentration in the product gas. At this time, the hydrogen amplification apparatus 200 includes a CO and H contained in by-product gas 2 reaction between O and steam (reaction scheme 4) and the by-product gas of CO and H 2 by the reaction between O and a metal catalyst (scheme 5) hydrogen thereby increasing the density. Wherein the CO and H contained in waste gas second steam to react with the O's high concentration in the steam, and a second heat exchanger 1400 is generated by the heat exchange action of the by-product gas in the heat recovery apparatus 100, as described above It uses the steam generated by heat exchange operation for lowering the temperature of the hydrogen-containing gas. That is, without supplying steam, to prepare a separate hydrogen production facilities from the outside, and recycling the steam generated in the hydrogen production process. The heat required for the reaction in the hydrogen amplification device with a heat by-product gas supplied from the reducing furnace (2) has, and is fully met by the steam.
[70]
Scheme 4) CO + H 2 O -> CO 2 + H 2 (water gas reaction)
[71]
Scheme 5) H 2 O + M (catalyst) -> H 2 + MO (metal catalysis)
[72]
To the increase of the hydrogen concentration, by-product gas from the reaction described above hydrogen amplifier (200), wherein the reaction is the temperature of the high-concentration-containing gas generated as a high exotherm at about 450 ℃. Thus, as high-concentration hydrogen contained without moving the gas directly to the hydrogen separation device 300, the temperature was raised to the purified product gas is supplied to the column with hydrogen, amplifier 200, and is recycled to the production of steam, as described above .
[73]
To this end, the first hydrogen gas transport pipe 1100 is provided so as to move the high concentration hydrogen-containing gas discharged from the hydrogen amplification apparatus 200 to the first heat exchanger (1300), passes through the first heat exchanger (1300) a second hydrogen gas transport pipe 1200 are provided so as to move to a high-concentration hydrogen-containing gas into a second heat exchanger (1400).
[74]
The thus dropped to second heat exchanger 1400 is the first to second heat exchange drive the high concentration hydrogen-containing gas the temperature of the first dropped by a heat exchanger 1300 in a normal temperature or room temperature and close to the temperature. In the second heat exchanger 1400 according to the embodiment uses water as a heat exchange medium. To this end, a second identical heat recovery medium for supplying water to the heat exchanger 1400 heat exchange medium, for example, supply a heat recovery medium supply water pipe heat recovery device 100 (120), and a connection, which is described earlier in You may use the supply pipe 120. For example, is connected to one end of the heat recovery apparatus 100 of the heat recovery medium feed pipe 120 and the other end is connected to the second heat exchanger (1400), is moved in the water in both directions may be configured to be supplied to each .
[75]
The second heat exchanger 1400 through a heat exchange operation between the high concentration hydrogen-containing gas and water, and drop the temperature of the high concentration hydrogen-containing gas to the ambient or room temperature and close to the temperature, since the high concentration hydrogen-containing gas is supplied to the hydrogen separator . The second heat exchanger 1400 is a high concentration hydrogen-containing gas and a heat exchange heat exchange steam of 200 ℃ to 300 ℃ by the action between the medium is generated in which the second and third steam transport pipe (2200, 2300) the second by-product is supplied to the gas transfer pipe 140 is mixed with the purified waste gas through. To this end, a second steam of the heat exchanger 1400, the second by-product gas transport pipe 140, the steam can move the pipe (hereinafter referred to as second steam transport pipe 2200) to be moved is provided. A more specific example, the second steam transport pipe 2200 has one end connected to the second heat exchanger (1400) and the other end is connected to the third steam transport pipe 2300. Thus, the third to the steam transport pipe 2300. The first and second steam transport pipe (2100, 2200), the steam is supplied from each inlet.
[76]
Of course, the first to third steam transport pipe (2100, 2200, 2300) is a not limited to the above connection structure, generated from the steam and the second heat exchanger 1400 is generated in the heat recovery unit 100, the steam, respectively a can be changed into various structures to supply the second product gas transport pipe (140).
[77]
Hydrogen separation apparatus 300 to remove the water component contained in the high concentration hydrogen-containing gas, and separation of hydrogen. Hydrogen separation apparatus 300 is, for example, hydrogen pressure swing adsorber (H 2 as a means having a Pressure Swing Absorber, H2 PSA), using the method of adsorptive separation of gas components in the hydrogen from the high concentration hydrogen-containing gas by a pressure swing It may be a means for. As another example, the hydrogen separation apparatus is a thermal swing adsorption; may be a means for separating the hydrogen (TSA temperature swing adsorption) method.
[78]
[79]
In the first embodiment was described as the filter for the heat recovery apparatus 100, the heat exchange means to remove the fine powder having a one-piece. But it is not limited to this, but the second embodiment, as in the example, the heat recovery device (100a), and a fine powder removal device (100b) comprising a filter including a heat exchange unit shown in Figure 2 may be provided separately. In the heat recovery unit (100a) by heat exchange between the product gas and a heat exchange medium, the steam is generated, which is supplied to the second product gas transport pipe 140 via the first steam transport pipe 2100. Then, the thermal heat exchange by-product gas from the recovery unit (100a) is supplied to the fine powder removal device (100b), it is moved to the hydrogen amplification device 200 after the fine powder is removed through a second by-product gas transport pipe 140 .
[80]
The first was described as the second embodiment is a differential removal device (100b) installed between the heat recovery unit (100a) and a hydrogen amplification apparatus 200, the differential is removed after the heat of the product gas recovered. However, not limited to this, and the heat recovery unit (100a) between the differential removal device (100b) and the hydrogen amplification apparatus 200 is installed, it is also possible to recover heat of the product gas after the fine powder is removed.
[81]
In addition, it can be a plurality, for example having two hydrogen amplifier (200a, 200b) as described in the first embodiment a, but having one of the hydrogen amplification device 200, the present invention is not limited thereto, illustrated in Figure 3 . For example, the is provided with a first and a second hydrogen amplification deposition apparatus (200a, 200b) as in the third embodiment, the second by-product and the gas transfer pipe 140 connected to the first hydrogen amplifier (200a), wherein the 2 by-product of the first heat exchanger 1300 on the extended path of the gas transport pipe 140 is provided. And, the front end of the first hydrogen gas transport pipe 1100. Once the first primary heat exchanger 1300 on the extended path of the connection to the hydrogen amplification unit (200a) and the other end of the second by-product gas transport pipe 140 of the It is connected.
[82]
Thus, the first the high-concentration hydrogen-containing gas generated by the hydrogen amplification unit (200a) flows into the first heat exchanger 1300 through the first hydrogen gas transport pipe 1100, the purification in the first heat exchanger (1300) the by-product gas and the heat is exchanged. In this case, the first temperature of the high concentration hydrogen-containing gas from heat exchanger 1300, and drop the temperature of the purified product gas is raised is supplied to the first hydrogen amplifier (200a). And a first column high-concentration hydrogen-containing gas, the temperature was dropped from the heat exchanger (1300) is a second after the move to the second heat exchanger 1400 through a hydrogen gas transport pipe 1200, a heat exchange, and the second heat exchanger (1400 ) and the second is moved to the third second hydrogen amplifier (200b through a hydrogen gas moving pipe 520 connecting the hydrogen amplification unit (200b)). And wherein the generated steam is fed to the second by-product gas transport pipe 150 via the second steam transport pipe 2200.
[83]
Further, the first high concentration hydrogen-containing gas generated by passing through the hydrogen amplification unit (200a) is a second, and is discharged after the hydrogen concentration is increased and reaction conducted again in the reaction of hydrogen amplifier (200b). At this time, the second high concentration hydrogen-containing gas discharged from the hydrogen amplification unit (200b) is supplied to the second hydrogen separation through the third heat exchanger 1500 is installed on the outside of the hydrogen amplification unit (200b) after the heat recovery device do. And the supplied to the three heat exchangers 1500, the steam is the fourth steam transport pipe 2400, a second heat exchanger 1400, a second steam transport pipe 2200 to a temperature of 250 ℃ after being introduced into the via created in It is mixed with the purified waste gas.
[84]
This third embodiment, can improve the conversion rate of the hydrogen gas by-product by using a plurality of hydrogen amplifier (200a, 200b).
[85]
Third embodiment is a structure further install additional hydrogen amplifying apparatus in the first embodiment. However, as in the second embodiment the third embodiment in the hydrogen production facility according to an example not limited to this and may be applied to the hydrogen amplification apparatus may be applied to other embodiments which will be described later.
[86]
The hydrogen production plant according to the fourth embodiment from the first embodiment in, a heat recovery device 100 and install the sulfur removal unit 710, between the hydrogen amplification device 200, and the hydrogen amplification device 200 and the hydrogen separation between the device 300 is configured by further installing the compressor 720. The sulfur removal unit 710 is contained in the purified product gas sulfur (S) separating, by removing means for, use a ZnO catalyst.
[87]
On the other hand, may contain a small amount of water, a high concentration hydrogen-containing gas, in order to easily separate the hydrogen from this that the pressure in the high concentration hydrogen-containing gas that is effective 7bar to 20bar. However, the second due to the high concentration hydrogen-containing gas passed through the heat exchanger is that the pressure is low at less than 7bar, the pressure to compress the high concentration hydrogen-containing gas from the compressor (720) after increased to 7bar to 20bar, a hydrogen separator (300 ) it is fed to.
[88]
The above-described fourth example has been described that the installation for further sulfur removal unit 710 and the compressor 720 in the first embodiment. However, this not limited to the second and also the applied to a sulfur removal unit 710 and the compressor 720 as the fourth embodiment in the hydrogen production facility according to the third embodiment, and applies to the embodiments described below the fifth example You may.
[89]
The fifth embodiment is a configuration in which additional installation of oxygen eliminator 800 to the rear end of the fourth embodiment the hydrogen separation apparatus 300 of the hydrogen production plant according to the example. The hydrogen separated in the hydrogen separation apparatus 300 may contain the fine amount of oxygen. Thus, than for the production of high purity hydrogen, the oxygen remover is installed to remove trace amounts of oxygen. Exemplary oxygen remover 800 according to the example by a Pd as a catalyst, removing the oxygen contained in the hydrogen gas, separately increase the purity of hydrogen gas.
[90]
[91]
It describes the production of hydrogen using the hydrogen production plant according to the following examples and the batch, will be omitted or a brief description of the contents is the same as the above-described information earlier.
[92]
Hydrogen production method according to an embodiment of the present invention is hydrogen amplification process to increase the hydrogen concentration in the harsh by-product gas to a heat recovery process, the heat recovery step of recovering heat of the product gas generated in the steel making process to produce the high concentration hydrogen-containing gas and a hydrogen separation step of separating the hydrogen in the high concentration hydrogen-containing gas generated in the hydrogen amplification. Here, the hydrogen amplification process is rough-product the steam and hydrogen amplification of high-concentration hydrogen-containing heat recovery process wherein at least one of the steam generated by heat exchange of the gas generated by the occurrence in the heat recovery of the by-product gas in the heat recovery process, It comprises the step of reacting the gas with the process of mixing and by-product gas and steam.
[93]
Or less, according to the presence of hydrogen production method according to an embodiment of the present invention will be specifically described in more for the first embodiment shown in FIG. 1 as an example.
[94]
A by-product in the reduction of the molten iron production facility 2, i.e. gas, by-product gas is supplied to the heat recovery unit 100 through the first by-product gas transport pipe (110). Supplied to the heat recovery device 100, by-product gas has a temperature of about 350 ℃ to 600 ℃ each place is a gas, heat exchange medium in the heat recovery unit 100, i.e., to about 230 ℃ by heat exchange action with water the temperature dropped to 350 ℃. And, by a filter provided in the heat recovery unit 100, the iron ore fine powder contained in the product gas is removed is discharged to the outside of the heat recovery device.
[95]
The heat recovery and the differential removal from the heat recovery unit 100 is a by-product gas was by-produced in the second gas moving through the transport pipe 140, the third is mixed with the steam supplied from the steam transport pipe 2300. The steam is the steam generated by heat exchange of the high concentration hydrogen-containing gas produced by the steam, and the foregoing process hydrogen amplifying apparatus 200 in the heat generated by the recovery of by-product gas in the heat recovery unit 100. After these the steam is mixed with the by-product gas from the second by-product gas transport pipe 140 passes through the second heat exchanger (1400). At this time, the flows through the second heat exchanger 1400 is a high concentration hydrogen-containing gas to the first hydrogen gas transport pipe 1100 is generated from the hydrogen amplification device 200, the heat of about 450 ℃ that the high concentration hydrogen-containing gas has causing a heat exchange reaction between the steam and the waste gas is mixed gas mixture. Thus, as the temperature of the gas mixture rising state is supplied to the hydrogen amplification device 200, high-concentration hydrogen-containing gas is supplied to the third heat exchanger 1500 through the second hydrogen gas transport pipe 1200. A mixed gas of the steam and by-product gas supplied to the hydrogen amplification device 200 is reacted in the hydrogen amplification device 200, of the by-product gas CO and H 2 O is CO 2 and hydrogen (H 2A) an exothermic reaction is up, increasing the hydrogen concentration in the product gas, and whereby the high concentration hydrogen-containing gas is generated. The high concentration hydrogen-containing gas generated by the hydrogen amplification device 200 and the first heat exchanger and the the product gas purified is moved to the first heat exchanger 1300 through a hydrogen gas transport pipe 1100, as described above, since the is moved to the second heat exchanger (1400) is moved to a normal temperature or room temperature and the hydrogen separation after the heat exchange to a temperature close to the device. At this time, a second flows into the heat exchanger 1400, a first heat exchanger 1300 through the steam has a first and second steam transport pipe (2100, 2200) generated by heat exchange of the high concentration hydrogen-containing gas in the purified the by-product gas is reused as a heat source for heat exchange.
[96]
Then, a series of circular cycle described above is repeated during the hydrogen production process.
[97]
Figure 6 is a hydrogen fish equipment using steam / by-product ratio of the CO amount of gas supplied to the hydrogen amplification device 200 in accordance with one embodiment a small number amplification by the processing heat recovery according to (steam / CO) device 200 a graph showing the form of steam supply into.
[98]
Conventionally, this was about 2.5 ratio (steam / CO) of the steam and CO is introduced into the hydrogen amplification device 200, in which steam is produced in one trillion months were all outside the hydrogen production plant. At this time, H for heat, the reaction for hydrogen amplification from the steam 2 because it must provide all of the O, required a large amount of steam.
[99]
However, according to embodiments of the present invention, the steel making process, and more particularly to recycling the by-product gas generated in the FINEX steel making process. That is, the heat necessary for generating hydrogen gas H 2 in the heat by-product gas itself, steam (H contained in the by-product gas 2 is one trillion months from O). Further, by not sending the high concentration hydrogen-containing gas of a high temperature generated by the hydrogen amplification device 200 as a hydrogen separation unit, recycling heat in the high concentration hydrogen-containing gas in the heat exchange, heat H for hydrogen production 2 producing O the high concentration hydrogen-containing gas from two trillion months is possible.
[100]
Thus, the ratio can be as low as less than 1.2 to a, substantially hydrogen amplifier 200 the ratio of steam and CO to be supplied to a (steam / CO) conventional (2 or 3) as shown in Fig. That is, it is possible to reduce the steam to be supplied to the hydrogen production than the prior art.
[101]
In addition, it can also, not to procurement possible within the by-product gas and a hydrogen production plant itself generated in the steel making process, to decrease the amount of steam produced is supplied from the outside, or not used to provide the steam. Therefore, it compared with the conventional, and reduces the steam production cost for hydrogen production, thereby, there is an effect that the hydrogen production costs. Further, as the steam jejoryang This reduction in external, reduced energy consumption, hence it is possible to reduce the CO2 emissions.
Industrial Applicability
[102]
According to the hydrogen production facility according to an embodiment of the present invention, produces steam (steam) using the heat generated in the hydrogen production step, and recycling it back to the hydrogen production process. Thus, it is possible to do the steam required for the hydrogen generation can be jodal by the hydrogen production equipment, reduce the amount of steam produced is supplied from the outside, or not used. Therefore, it compared with the conventional, and reduces the steam production cost for hydrogen production, thereby, there is an effect that the hydrogen production costs.

Claims
[Claim 1]Receiving offer by-product gas generated in the steel making process, the heat recovery apparatus for recovering heat from the product gas; The heat receiving provide a by-product gas discharged from the recovery device, by increasing the hydrogen concentration in the product gas, high-concentration hydrogen-containing hydrogen amplifier to produce gas; The heat recovering device and connected to at least one of the hydrogen amplifier, at least one of the thermally exchanging the high concentration hydrogen-containing gas generated in the heat recovery unit with steam and the hydrogen amplification device occurs during heat recovery of the by-product gas from the generated steam, hydrogen gas treatment device for supplying one of the hydrogen amplification device; And a hydrogen separation unit to separate hydrogen from high-concentration hydrogen-containing gas supplied through the hydrogen gas treatment apparatus; Hydrogen production plant comprising a.
[Claim 2]The method according to claim 1, one end connected to the said heat recovery unit and the other end is connected to the hydrogen amplification apparatus, the steam supplied to the product gas discharged from the heat recovery unit of the hydrogen amplification apparatus, wherein the hydrogen gas treatment apparatus hydrogen production plant comprising a by-product gas transport pipe for supplying hydrogen to the amplifying apparatus.
[Claim 3]The method according to claim 2, wherein the hydrogen gas treatment device comprises a heat exchanger, which by heat exchange with the high concentration hydrogen-containing gas discharged from the hydrogen amplifier generate steam, and drops the temperature of the high-concentration hydrogen gas, the heat recovery in the apparatus by moving at least one of the steam generated by the steam and the heat exchange occurs in the heat recovery of the by-product gas as the by-product gas transport pipe supplying steam to mix with the product gas; Hydrogen production plant comprising a.
[Claim 4]The method according to claim 3, wherein the hydrogen gas treatment apparatus is connected with the hydrogen amplification device comprising: a first hydrogen gas moving pipe for discharging the high-concentration hydrogen-containing gas from the hydrogen amplification device; A first heat exchanger to the first is connected to the hydrogen gas transport pipe, the heat exchange of the by-product gas moving by-product gas and the mixed gas with a high concentration hydrogen-containing gas is mixed with steam supplied through the pipe; The first is connected to the primary heat exchanger, the second heat exchanger to the first heat exchanger to heat the high concentration hydrogen-containing gas recovered from the heat exchanger; connected to, and the first heat exchanger and the second heat exchanger, the first heat a second hydrogen gas transport pipe for moving the heat recovery high concentration hydrogen-containing gas from the heat exchanger to the second heat exchanger; Hydrogen production facility that includes.
[Claim 5]The method according to claim 4, wherein the steam supply unit, one end is connected to the heat recovery unit, the first mobile steam pipe for discharging the by-product steam from the heat recovery unit; Once the first is connected to the second heat exchanger, the second steam transport pipe for moving the steam generated in the heat exchange in the high concentration hydrogen-containing gas; And includes a hydrogen production plant, each of the first and second steam transport pipe the other end connected to the by-product gas transport pipe a.
[Claim 6]The method according to claim 5, wherein the first heat exchanger is of the point is provided on the by-product gas extending path, said first heat exchanger in which the first and the the steam and the waste gas supplied from the second steam transport pipe, respectively the mixture hydrogen production facilities provided on the rear end.
[Claim 7]The method according to claim 5, a hydrogen production plant comprising a heat recovery unit and the second heat exchanger is connected to each of the heat recovery medium moving for supplying a heat recovery medium for the heat exchange pipe.
[Claim 8]A method according to any one of claims 1 to 7, a hydrogen production facility is provided with a plurality of the hydrogen amplification apparatus.
[Claim 9]The method according to claim any one of claim 1 to claim 7, hydrogen production plant comprising a sulfur removal device for removing the containing of the product gas discharged from the heat recovery unit the sulfur supplied to the hydrogen amplification apparatus.
[Claim 10]A method according to any one of claims 1 to 7, hydrogen production plant for compressing a high-concentration hydrogen-containing gas supplied from the hydrogen gas treatment device by increasing the pressure comprises a compressor for the supply of the hydrogen separation device.
[Claim 11]A method according to any one of claims 1 to 7, hydrogen production plant including oxygen remover for removing oxygen from the hydrogen gas discharged from the hydrogen separation device.
[Claim 12]A heat recovery step of recovering heat of the product gas generated in the steel making process; The heat recovery hydrogen amplification process to increase the hydrogen concentration in the product gas via the process of producing high concentration hydrogen-containing gas; And a hydrogen separation step of separating the hydrogen in the high concentration hydrogen-containing gas generated in the hydrogen amplification process; The inclusion, and the hydrogen amplification procedure, the at least one generated by the high concentration of heat exchange with the hydrogen-containing gas generated by the steam, and the hydrogen amplification occurs during heat recovery of the by-product gas in the heat recovery process steam the process of mixing and the heat recovery process, rough-product gas; and a process of reacting the by-product gas and steam; Hydrogen production method comprising a.
[Claim 13]The method according to claim 12, wherein the amplification regimen is hydrogen, a hydrogen production method including a process of the high concentration hydrogen-containing gas and the heat exchange generated by the steam and the waste gas is a mixed gas to the hydrogen amplification.
[Claim 14]The method according to claim 13, wherein the step of generating the steam generated by heat exchange of the high concentration hydrogen-containing gas generated by the hydrogen amplification process, and the high concentration hydrogen-containing gas generated by the hydrogen amplification process, the steam and product gas the primary heat exchange process of the heat exchange the gas mixture; By the process of the first heat exchange process, the exchange column containing a high concentration of the gas exchange medium and the heat generation of hydrogen via a steam; Hydrogen production method comprising a.
[Claim 15]The method according to claim 14, wherein the by-product gas steam and a gas mixture of hydrogen production method is to be heated up to a temperature required for the hydrogen amplification reaction by heat exchange action with the high concentration hydrogen-containing gas.
[Claim 16]A method according to any one of claim 12 to claim 15, a method of producing hydrogen for the hydrogen amplification process comprises a plurality of hydrogen amplification.
[Claim 17]A method according to any one of claim 12 to claim 15, the method of hydrogen production between the heat recovery process and the hydrogen jungpok process comprising the step of removing sulfur from the waste gas.
[Claim 18]A method according to any one of claim 12 to claim 15, a method of producing hydrogen for hydrogen between the amplification and the hydrogen separation process includes a compression process of compressing the high concentration hydrogen-containing gas.
[Claim 19]A method according to any one of claim 12 to claim 15, a method of producing hydrogen comprising the step of removing oxygen after the hydrogen separation process, to remove oxygen from the separated hydrogen gas.