WO2024259830A1 - Gas recovery system - Google Patents
Gas recovery system Download PDFInfo
- Publication number
- WO2024259830A1 WO2024259830A1 PCT/CN2023/125368 CN2023125368W WO2024259830A1 WO 2024259830 A1 WO2024259830 A1 WO 2024259830A1 CN 2023125368 W CN2023125368 W CN 2023125368W WO 2024259830 A1 WO2024259830 A1 WO 2024259830A1
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- WO
- WIPO (PCT)
- Prior art keywords
- gas
- pipe
- coal gas
- regeneration
- desulfurization tower
- Prior art date
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 44
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 94
- 230000023556 desulfurization Effects 0.000 claims abstract description 93
- 238000011069 regeneration method Methods 0.000 claims description 74
- 230000008929 regeneration Effects 0.000 claims description 71
- 239000003034 coal gas Substances 0.000 claims description 47
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 12
- 229910052717 sulfur Inorganic materials 0.000 claims description 12
- 239000011593 sulfur Substances 0.000 claims description 12
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 8
- 239000003463 adsorbent Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
Definitions
- the invention relates to the technical field of blast furnace ironmaking gas recovery, and in particular to a gas recovery system.
- a blast furnace top balanced pressure gas recovery system is arranged beside the furnace top balanced pressure release system, including a recovery pipeline, an ejector, a buffer bag filter and a low-pressure net factory gas main network connected in sequence with the furnace top balanced pressure release system material tank by a pipeline.
- the balanced pressure gas is connected to the factory gas main network through a desulfurization tower, but due to the high pressure of the balanced pressure gas itself, and for intermittent recovery, after the balanced pressure gas is connected to the grid, the air pressure of the airflow in the blast furnace gas pipe near the balanced pressure gas inlet has a large fluctuation.
- the air pressure of the air flow in the blast furnace gas pipe near the equalized pressure gas inlet fluctuates greatly, which increases the thrust of the nearby supports.
- the object of the present invention is to provide a coal gas recovery system to reduce the problem of the influence of the pressure-equalized coal gas on the gas pressure in the blast furnace coal gas pipe when it is connected to the grid.
- the present invention provides a gas recovery system, including a pressure-equalizing gas inlet pipe and a desulfurization tower.
- the inlet of the desulfurization tower is connected to the pressure-equalizing gas inlet pipe and the blast furnace gas pipe, and the outlet of the desulfurization tower is connected to the clean gas main pipe of the factory gas main network.
- the regeneration gas main is connected to the clean gas main and to the regeneration gas branch
- the regeneration gas branch is connected to the desulfurization tower
- the desulfurization tower is connected to the regeneration gas outlet pipe.
- a desulfurization tower is connected to at least two regeneration gas branch pipes, and the regeneration gas branch pipes are arranged in sequence from the top of the desulfurization tower to the bottom of the desulfurization tower, the regeneration gas outlet pipe is connected to the bottom of the desulfurization tower, the blast furnace gas pipe is connected to the bottom of the desulfurization tower, and the clean gas main pipe is connected to the top of the desulfurization tower; or, the regeneration gas branch pipes are arranged in sequence from the bottom of the desulfurization tower to the top of the desulfurization tower, the regeneration gas outlet pipe is connected to the top of the desulfurization tower, the blast furnace gas pipe is connected to the top of the desulfurization tower, and the clean gas main pipe is connected to the bottom of the desulfurization tower.
- a sulfur content sensor for detecting the sulfur content of the clean gas in the clean gas main is provided on the clean gas main.
- the sulfur content detected by the sulfur content sensor reaches a set threshold, the regenerated gas is introduced into the desulfurization tower through the regenerated gas main and the regenerated gas branch.
- it also includes a first heat exchanger, which includes a first cold source flow channel and a first hot source flow channel, the regeneration gas main pipe is connected to the first cold source flow channel, and the equalized pressure gas inlet pipe is connected to the first heat source flow channel.
- a first heat exchanger which includes a first cold source flow channel and a first hot source flow channel
- the regeneration gas main pipe is connected to the first cold source flow channel
- the equalized pressure gas inlet pipe is connected to the first heat source flow channel.
- a second heat exchanger which includes a second cold source flow channel and a second heat source flow channel.
- the gas recovery system also includes a saturated steam pipe and a condensate water pipe.
- the saturated steam pipe is connected to the inlet of the second heat source flow channel
- the condensate water pipe is connected to the outlet of the second heat source flow channel
- the regenerated gas main is connected to the second cold source flow channel.
- first heat exchanger and the second heat exchanger are connected in parallel, or the first heat exchanger and the second heat exchanger are connected in series.
- an electric heater is further included, which is arranged on the regeneration gas main pipe and located downstream of the first heat exchanger and the second heat exchanger.
- the number of the desulfurization towers is at least two.
- the equalized gas inlet pipe is connected with the desulfurization tower, instead of connecting the equalized gas inlet pipe with the blast furnace gas pipe and then connecting it to the plant gas main network through the desulfurization tower, the higher-pressure equalized gas first enters the desulfurization tower and then enters the plant gas main network from the desulfurization tower.
- the large capacity of the desulfurization tower itself is used to expand the capacity and relieve the pressure, thereby preventing the higher-pressure equalized gas from causing pressure fluctuations in the airflow near the equalized gas inlet of the blast furnace gas pipe, thereby preventing the pressure fluctuations in the airflow near the equalized gas inlet of the blast furnace gas pipe from increasing the thrust of nearby supports, and at the same time preventing the pressure fluctuations in the airflow near the equalized gas inlet of the blast furnace gas pipe from causing certain interference to the airflow of the TRT or BPRT exhaust pipe connected to the grid near the equalized gas inlet, thereby causing the gas pressure fluctuations in the airflow of the TRT or BPRT exhaust pipe, and further affecting the stability of the operating conditions of the TRT or BPRT units; in addition, the desulfurization tower can also desulfurize the equalized gas.
- FIG. 1 is a schematic structural diagram of a gas recovery system according to an embodiment of the present invention.
- 110-Equalized pressure gas recovery device 120-Equalized pressure gas inlet pipe; 130-Desulfurization tower; 140-Plant area gas main network; 150-Dust removal system; 160-Blast furnace gas pipe; 170-Clean gas main pipe; 180-Regeneration gas main pipe; 190-Regeneration gas branch pipe; 201-First heat exchanger; 202-Second heat exchanger; 210-Saturated steam pipeline; 220-Condensate pipeline; 230-Electric heater; 240-Pressure reducing valve group; 250-Muffler; 260-Gas generator set; 270-Blast furnace gas branch pipe; 280-Regeneration gas outlet pipe.
- the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inside”, “outside”, etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms “first”, “second”, “third”, etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
- horizontal does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted.
- horizontal only means that its direction is more horizontal than “vertical”, and does not mean that the structure must be completely horizontal, but can be slightly tilted.
- the terms “set”, “install”, “connect”, and “connect” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements.
- the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
- FIG. 1 is a structural schematic diagram of a gas recovery system in an embodiment of the present invention.
- This embodiment provides a gas recovery system including a pressure-equalizing gas inlet pipe 120 and a desulfurization tower 130.
- the inlet of the desulfurization tower 130 is connected to the pressure-equalizing gas inlet pipe 120 and the blast furnace gas pipe 160, and the outlet of the desulfurization tower 130 is connected to a clean gas main 170 of a plant gas main network 140.
- the pressure-equalizing gas inlet pipe 120 is connected to the desulfurization tower 130, rather than connecting the pressure-equalizing gas inlet pipe 120 to the blast furnace gas pipe 160 and then connecting to the plant gas main network 140 through the desulfurization tower 130, the pressure-equalizing gas with a higher pressure first enters the desulfurization tower 130 and then enters the plant gas main network 140 from the desulfurization tower 130.
- the large capacity of the desulfurization tower 130 itself is used to expand the capacity and release the pressure, so as to avoid the pressure-equalizing gas with a higher pressure causing the pressure of the airflow near the pressure-equalizing gas inlet of the blast furnace gas pipe 160 to fluctuate.
- the desulfurization tower 130 can also desulfurize the equalized gas.
- the gas recovery system further includes a pressure-equalizing gas recovery device 110 , and the pressure-equalizing gas recovery device 110 is connected to the pressure-equalizing gas inlet pipe.
- the coal gas recovery system further includes a dust removal system 150 , and the dust removal system 150 is in communication with the blast furnace gas pipe 160 .
- the desulfurization tower 130 includes a tower body, and a pretreatment layer, a plurality of adsorption layers and a reserved layer arranged from bottom to top in the tower body along the height direction.
- a maintenance hole is provided on the tower body at the side of the pretreatment layer.
- Several adsorption layers are arranged at intervals to facilitate the redistribution of airflow in the tower body, and a maintenance hole is configured for every two adsorption layers.
- the adsorbent of the pretreatment layer is formed by stacking spherical granular adsorbent materials, and the height of the reserved layer can be quantitatively adjusted according to the amount of blast furnace gas to be processed; the adsorption layer and the reserved layer have the same structure, and the adsorbents of the two are formed by stacking regular block adsorbent materials in the middle and spherical granular adsorbent materials around them.
- the pretreatment layer, each adsorption layer and the reserved layer are respectively installed inside the tower body by the supporting structure; the inspection hole facilitates the timely replacement of the adsorption material; the outside of the adsorption tower is provided with an insulation structure; in addition to the above configuration, the other settings and structures of the adsorption tower are existing mature technologies and will not be repeated here.
- the coal gas recovery system also includes a regeneration coal gas main 180 and a regeneration coal gas branch 190.
- the regeneration coal gas main 180 is connected to the clean coal gas main 170 and to the regeneration coal gas branch 190.
- the regeneration coal gas branch 190 is connected to the desulfurization tower 130, and the desulfurization tower 130 is connected to the regeneration coal gas outlet pipe 280.
- the number of the desulfurization towers 130 is at least two, and the gas recovery system further includes a plurality of clean gas branch pipes.
- the desulfurization tower is connected to the clean gas main pipe 170 through the clean gas branch pipes.
- One desulfurization tower 130 is connected to at least two regeneration gas branch pipes 190, and the regeneration gas branch pipes 190 are arranged in layers from the top of the desulfurization tower 130 to the bottom of the desulfurization tower 130.
- the regeneration gas outlet pipe 280 is connected to the bottom of the desulfurization tower 130, and the blast furnace gas pipe 160 is connected to the desulfurization tower 130.
- 0 is connected to the bottom of the desulfurization tower 130, and the clean gas main is connected to the top of the desulfurization tower 130.
- the regeneration gas entering the desulfurization tower 130 can form a uniform temperature field, thereby achieving a better regeneration effect. It can avoid the situation where the regeneration gas flows out from the lower flow channel in the desulfurization tower 130 due to the large cylinder of the desulfurization tower 130 and the single regeneration gas inlet, or the temperature drops to the point where it cannot meet the temperature requirement of the regeneration gas after flowing from a high place to a low place, thereby achieving a better regeneration effect.
- the regeneration gas branch pipe is closed, and the gas in the blast furnace gas pipe 160 enters the desulfurization tower 130 from the bottom, and flows into the clean gas main pipe from the top clean gas branch pipe after desulfurization in the desulfurization tower 130.
- the clean gas branch pipe corresponding to the desulfurization tower 130 is closed, and the regeneration gas branch pipe 190 is opened. After the regeneration gas enters the desulfurization tower 130 and reacts with the adsorbent, it flows out from the regeneration gas outlet pipe 280 at the bottom.
- the regeneration gas branch pipes are arranged in layers from the bottom of the desulfurization tower 130 to the top of the desulfurization tower 130, the regeneration gas outlet pipe 280 is connected to the top of the desulfurization tower 130, the blast furnace gas pipe 160 is connected to the top of the desulfurization tower 130, and the clean gas main is connected to the bottom of the desulfurization tower 130.
- each layer of regeneration gas branch pipes 190 is evenly distributed around the circumference of the desulfurization tower 130, so that the regeneration gas can form a uniform temperature field, thereby achieving a better regeneration effect.
- the pressure-equalizing gas inlet pipe 120 is connected to the bottom of the desulfurization tower 130 .
- one desulfurization tower 130 is connected to three regeneration gas branch pipes 190 , and the regeneration gas branch pipes 190 are connected to the top, middle and bottom of the desulfurization tower 130 , respectively.
- the clean gas main is provided with a sulfur content sensor for detecting the sulfur content of the clean gas in the clean gas main.
- a sulfur content sensor for detecting the sulfur content of the clean gas in the clean gas main.
- the gas recovery system further includes a first heat exchanger 201, the first heat exchanger 201 includes a first cold source flow channel and a first heat source flow channel, the regeneration gas main pipe 180 is connected to the first cold source flow channel, and the pressure-equalizing gas inlet pipe 120 is connected to the first heat source flow channel.
- the heat in the pressure-equalizing gas can be fully utilized to improve the utilization rate of the heat.
- the coal gas recovery system also includes a second heat exchanger 202, the second heat exchanger 202 includes a second cold source flow channel and a second heat source flow channel, the coal gas recovery system also includes a saturated steam pipe 210 and a condensate pipe 220, the saturated steam pipe 210 is connected to the inlet of the second heat source flow channel, the condensate pipe 220 is connected to the outlet of the second heat source flow channel, and the regeneration gas main 180 is connected to the second cold source flow channel.
- the first heat exchanger 201 and the second heat exchanger 202 are connected in parallel, or the first heat exchanger 201 and the second heat exchanger 202 are connected in series.
- the first heat exchanger 201 and the second heat exchanger 202 are connected in parallel, which means that the two heat exchangers are arranged on two regeneration gas mains 180 arranged side by side, and the first heat exchanger 201 and the second heat exchanger 202 are connected in series, which means that the first heat exchanger 201 and the second heat exchanger 202 are arranged on the regeneration gas mains 180 in sequence.
- the coal gas recovery system further includes an electric heater 230 , which is disposed on the regeneration coal gas main pipe 180 and is located downstream of the first heat exchanger 201 and the second heat exchanger 202 .
- the gas recovery system further includes a pressure reducing valve group 240 , and the pressure reducing valve group 240 is disposed on the blast furnace gas pipe 160 .
- the gas recovery system further includes a muffler 250 , which is disposed on the blast furnace gas pipe 160 and located between the desulfurization tower 130 and the pressure reducing valve group 240 .
- the gas recovery system further includes a gas generator set 260 and a blast furnace gas branch pipe 270, one end of the blast furnace gas branch pipe 270 is connected to the dust removal system 150, the other end of the blast furnace gas branch pipe 270 is connected to the blast furnace gas pipe 160, and the other end of the blast furnace gas branch pipe 270 is located between the muffler 250 and the desulfurization tower 130, and the gas generator set 260 is arranged on the blast furnace gas branch pipe 270.
- the gas generator set 260 is one of a TRT and a BPRT.
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Abstract
Description
本发明涉及高炉炼铁煤气回收技术领域，特别涉及一种煤气回收系统。The invention relates to the technical field of blast furnace ironmaking gas recovery, and in particular to a gas recovery system.
为了避免能源浪费和降低对环境的影响，现有技术中提出了对均压煤气进行回收的技术。如中国专利(CN115652001A)公开了一种高炉炉顶均压煤气回收系统，该高炉炉顶均压煤气回收系统设置于炉顶均压放散系统旁，包括通过管道与炉顶均压放散系统料罐依次连接的回收管路、引射器、缓冲布袋除尘器和低压净厂区煤气总管网。其中，均压煤气经过除尘后，经高炉煤气管后，再经脱硫塔与所述厂区煤气总管网连通，但由于均压煤气本身压力较高，且为间歇回收，均压煤气并网后，靠近均压煤气进口处的高炉煤气管内的气流的气压有较大波动。靠近均压煤气进口处的高炉煤气管内的气流的气压有较大波动使得附近支架的推力增大，同时对在均压煤气进口的附近并网的高炉煤气余压透平发电装置(Blast Furnace Top Gas Recovery Turbine Unit，TRT)或者煤气透平与电机同轴驱动的高炉鼓风机组(Blast Furnace Power Recovery Turbine，BPRT)的排气管道的气流有一定的干扰，使得TRT或者BPRT排气管道的出气压力波动，进而影响TRT或者BPRT机组运行工况的稳定性。In order to avoid energy waste and reduce the impact on the environment, the technology of recycling the balanced pressure gas is proposed in the prior art. As disclosed in Chinese patent (CN115652001A), a blast furnace top balanced pressure gas recovery system is arranged beside the furnace top balanced pressure release system, including a recovery pipeline, an ejector, a buffer bag filter and a low-pressure net factory gas main network connected in sequence with the furnace top balanced pressure release system material tank by a pipeline. Wherein, after dust removal, after the blast furnace gas pipe, the balanced pressure gas is connected to the factory gas main network through a desulfurization tower, but due to the high pressure of the balanced pressure gas itself, and for intermittent recovery, after the balanced pressure gas is connected to the grid, the air pressure of the airflow in the blast furnace gas pipe near the balanced pressure gas inlet has a large fluctuation. The air pressure of the air flow in the blast furnace gas pipe near the equalized pressure gas inlet fluctuates greatly, which increases the thrust of the nearby supports. At the same time, it interferes with the air flow in the exhaust duct of the blast furnace gas recovery turbine power generation unit (Blast Furnace Top Gas Recovery Turbine Unit, TRT) or the blast furnace blower unit (Blast Furnace Power Recovery Turbine, BPRT) driven coaxially by the gas turbine and motor connected to the grid near the equalized pressure gas inlet, causing the outlet pressure of the TRT or BPRT exhaust duct to fluctuate, thereby affecting the stability of the operating conditions of the TRT or BPRT units.
因此，需要对现有的煤气回收系统进行改进，以降低均压煤气并网时对高炉煤气管内气流的气压的影响。Therefore, it is necessary to improve the existing gas recovery system to reduce the impact of the pressure-equalized gas grid connection on the gas pressure in the blast furnace gas pipe.
发明内容Summary of the invention
本发明的目的在于提供一种煤气回收系统，以降低均压煤气并网时对高炉煤气管内气流的气压的影响的问题。The object of the present invention is to provide a coal gas recovery system to reduce the problem of the influence of the pressure-equalized coal gas on the gas pressure in the blast furnace coal gas pipe when it is connected to the grid.
为解决上述技术问题，本发明提供一种煤气回收系统，包括均压煤气进管，还包括脱硫塔，所述脱硫塔的进口连通均压煤气进管与高炉煤气管，所述脱硫塔的出口连接可连通厂区煤气总管网的净煤气干管。In order to solve the above technical problems, the present invention provides a gas recovery system, including a pressure-equalizing gas inlet pipe and a desulfurization tower. The inlet of the desulfurization tower is connected to the pressure-equalizing gas inlet pipe and the blast furnace gas pipe, and the outlet of the desulfurization tower is connected to the clean gas main pipe of the factory gas main network.
可选的，还包括再生煤气干管和再生煤气支管，所述再生煤气干管与所述净煤气干管连通，并与所述再生煤气支管连通，所述再生煤气支管与所述脱硫塔连通，所述脱硫塔与再生煤气出口管连通。Optionally, it also includes a regeneration gas main and a regeneration gas branch, the regeneration gas main is connected to the clean gas main and to the regeneration gas branch, the regeneration gas branch is connected to the desulfurization tower, and the desulfurization tower is connected to the regeneration gas outlet pipe.
可选的，一个脱硫塔与至少两个再生煤气支管连通，且再生煤气支管自所述脱硫塔的顶部向所述脱硫塔的底部依次设置，所述再生煤气出口管与所述脱硫塔的底部连通，所述高炉煤气管与所述脱硫塔的底部连通，所述净煤气干管与所述脱硫塔的顶部连通；或者，再生煤气支管自所述脱硫塔的底部向所述脱硫塔的顶部依次设置，所述再生煤气出口管与所述脱硫塔的顶部连通，所述高炉煤气管与所述脱硫塔的顶部连通，所述净煤气干管与所述脱硫塔的底部连通。Optionally, a desulfurization tower is connected to at least two regeneration gas branch pipes, and the regeneration gas branch pipes are arranged in sequence from the top of the desulfurization tower to the bottom of the desulfurization tower, the regeneration gas outlet pipe is connected to the bottom of the desulfurization tower, the blast furnace gas pipe is connected to the bottom of the desulfurization tower, and the clean gas main pipe is connected to the top of the desulfurization tower; or, the regeneration gas branch pipes are arranged in sequence from the bottom of the desulfurization tower to the top of the desulfurization tower, the regeneration gas outlet pipe is connected to the top of the desulfurization tower, the blast furnace gas pipe is connected to the top of the desulfurization tower, and the clean gas main pipe is connected to the bottom of the desulfurization tower.
可选的，所述净煤气干管上设置有用于检测净煤气干管中的净煤气的硫含量的硫含量传感器，当硫含量传感器检测的硫含量达到设定阈值时，通过所述再生煤气干管和所述再生煤气支管向所述脱硫塔内通入再生煤气。Optionally, a sulfur content sensor for detecting the sulfur content of the clean gas in the clean gas main is provided on the clean gas main. When the sulfur content detected by the sulfur content sensor reaches a set threshold, the regenerated gas is introduced into the desulfurization tower through the regenerated gas main and the regenerated gas branch.
可选的，还包括第一换热器，所述第一换热器包括第一冷源流道和第一热源流道，所述再生煤气干管与所述第一冷源流道连通，所述均压煤气进管与所述第一热源流道连通。Optionally, it also includes a first heat exchanger, which includes a first cold source flow channel and a first hot source flow channel, the regeneration gas main pipe is connected to the first cold source flow channel, and the equalized pressure gas inlet pipe is connected to the first heat source flow channel.
可选的，还包括第二换热器，所述第二换热器包括第二冷源流道和第二热源流道，所述煤气回收系统还包括饱和蒸汽管道和冷凝水管道，所述饱和蒸汽管道与所述第二热源流道入口连通，所述冷凝水管道与所述第二热源流道出口连通，所述再生煤气干管与所述第二冷源流道连通。Optionally, a second heat exchanger is also included, which includes a second cold source flow channel and a second heat source flow channel. The gas recovery system also includes a saturated steam pipe and a condensate water pipe. The saturated steam pipe is connected to the inlet of the second heat source flow channel, the condensate water pipe is connected to the outlet of the second heat source flow channel, and the regenerated gas main is connected to the second cold source flow channel.
可选的，所述第一换热器和所述第二换热器并联，或者所述第一换热器和所述第二换热器串联。Optionally, the first heat exchanger and the second heat exchanger are connected in parallel, or the first heat exchanger and the second heat exchanger are connected in series.
可选的，还包括电加热器，所述电加热器设置在所述再生煤气干管上，且位于所述第一换热器和所述第二换热器的下游。Optionally, an electric heater is further included, which is arranged on the regeneration gas main pipe and located downstream of the first heat exchanger and the second heat exchanger.
可选的，所述脱硫塔的数量为至少两个。Optionally, the number of the desulfurization towers is at least two.
本发明提供的一种煤气回收系统，具有以下有益效果：The gas recovery system provided by the present invention has the following beneficial effects:
由于所述均压煤气进管与所述脱硫塔连通，而非将所述均压煤气进管与高炉煤气管连通后，再经脱硫塔与所述厂区煤气总管网连通，因此，压力较高的均压煤气先进入所述脱硫塔，再从脱硫塔进入厂区煤气总管网，通过脱硫塔本身的大容量来扩容泄压，避免压力较高的均压煤气使高炉煤气管靠近均压煤气入口处的气流的压力产生波动，从而避免高炉煤气管靠近均压煤气入口处的气流的压力波动使得附近支架的推力增大，同时避免高炉煤气管靠近均压煤气入口处的气流的压力波动对在均压煤气进口的附近并网的TRT或者BPRT排气管道的气流有一定的干扰，从而使得出TRT或者BPRT排气管道的气流的气压力波动，进而影响TRT或者BPRT机组运行工况的稳定性；另外，脱硫塔也可对均压煤气进行脱硫。Since the equalized gas inlet pipe is connected with the desulfurization tower, instead of connecting the equalized gas inlet pipe with the blast furnace gas pipe and then connecting it to the plant gas main network through the desulfurization tower, the higher-pressure equalized gas first enters the desulfurization tower and then enters the plant gas main network from the desulfurization tower. The large capacity of the desulfurization tower itself is used to expand the capacity and relieve the pressure, thereby preventing the higher-pressure equalized gas from causing pressure fluctuations in the airflow near the equalized gas inlet of the blast furnace gas pipe, thereby preventing the pressure fluctuations in the airflow near the equalized gas inlet of the blast furnace gas pipe from increasing the thrust of nearby supports, and at the same time preventing the pressure fluctuations in the airflow near the equalized gas inlet of the blast furnace gas pipe from causing certain interference to the airflow of the TRT or BPRT exhaust pipe connected to the grid near the equalized gas inlet, thereby causing the gas pressure fluctuations in the airflow of the TRT or BPRT exhaust pipe, and further affecting the stability of the operating conditions of the TRT or BPRT units; in addition, the desulfurization tower can also desulfurize the equalized gas.
图1是本发明实施例中煤气回收系统的结构示意图。FIG. 1 is a schematic structural diagram of a gas recovery system according to an embodiment of the present invention.
附图标记说明：Description of reference numerals:
110-均压煤气回收装置；120-均压煤气进管；130-脱硫塔；140-厂区煤气总管网；150-除尘系统；160-高炉煤气管；170-净煤气干管；180-再生煤气干管；190-再生煤气支管；201-第一换热器；202-第二换热器；210-饱和蒸汽管道；220-冷凝水管道；230-电加热器；240-减压阀组；250-消音器；260-煤气发电机组；270-高炉煤气支管；280-再生煤气出口管。110-Equalized pressure gas recovery device; 120-Equalized pressure gas inlet pipe; 130-Desulfurization tower; 140-Plant area gas main network; 150-Dust removal system; 160-Blast furnace gas pipe; 170-Clean gas main pipe; 180-Regeneration gas main pipe; 190-Regeneration gas branch pipe; 201-First heat exchanger; 202-Second heat exchanger; 210-Saturated steam pipeline; 220-Condensate pipeline; 230-Electric heater; 240-Pressure reducing valve group; 250-Muffler; 260-Gas generator set; 270-Blast furnace gas branch pipe; 280-Regeneration gas outlet pipe.
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。 It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
此外，术语“水平”、“竖直”等术语并不表示要求部件绝对水平或悬垂，而是可以稍微倾斜。如“水平”仅仅是指其方向相对“竖直”而言更加水平，并不是表示该结构一定要完全水平，而是可以稍微倾斜。In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
参考图1，图1是本发明实施例中煤气回收系统的结构示意图，本实施例提供一种煤气回收系统包括均压煤气进管120，还包括脱硫塔130，所述脱硫塔130的进口连通均压煤气进管120与高炉煤气管160，所述脱硫塔130的出口连接可连通厂区煤气总管网140的净煤气干管170。Refer to Figure 1, which is a structural schematic diagram of a gas recovery system in an embodiment of the present invention. This embodiment provides a gas recovery system including a pressure-equalizing gas inlet pipe 120 and a desulfurization tower 130. The inlet of the desulfurization tower 130 is connected to the pressure-equalizing gas inlet pipe 120 and the blast furnace gas pipe 160, and the outlet of the desulfurization tower 130 is connected to a clean gas main 170 of a plant gas main network 140.
由于所述均压煤气进管120与所述脱硫塔130连通，而非将所述均压煤气进管120与高炉煤气管160连通后，再经脱硫塔130与所述厂区煤气总管网140连通，因此，压力较高的均压煤气先进入所述脱硫塔130，再从脱硫塔130进入厂区煤气总管网140，通过脱硫塔130本身的大容量来扩容泄压，避免压力较高的均压煤气使高炉煤气管160靠近均压煤气入口处的气流的压力产生波动，从而避免高炉煤气管160靠近均压煤气入口处的气流的压力波动使得附近支架的推力增大，同时避免高炉煤气管160靠近均压煤气入口处的气流的压力波动对在均压煤气进口的附近并网的TRT或者BPRT排气管道的气流有一定的干扰，从而使得出TRT或者BPRT排气管道的气流的气压力波动，进而影响TRT或者BPRT机组运行工况的稳定性；另外，脱硫塔130也可对均压煤气进行脱硫。Since the pressure-equalizing gas inlet pipe 120 is connected to the desulfurization tower 130, rather than connecting the pressure-equalizing gas inlet pipe 120 to the blast furnace gas pipe 160 and then connecting to the plant gas main network 140 through the desulfurization tower 130, the pressure-equalizing gas with a higher pressure first enters the desulfurization tower 130 and then enters the plant gas main network 140 from the desulfurization tower 130. The large capacity of the desulfurization tower 130 itself is used to expand the capacity and release the pressure, so as to avoid the pressure-equalizing gas with a higher pressure causing the pressure of the airflow near the pressure-equalizing gas inlet of the blast furnace gas pipe 160 to fluctuate. , thereby avoiding the pressure fluctuation of the air flow near the equalized gas inlet of the blast furnace gas pipe 160, which increases the thrust of the nearby brackets, and at the same time avoiding the pressure fluctuation of the air flow near the equalized gas inlet of the blast furnace gas pipe 160, which interferes with the air flow of the TRT or BPRT exhaust pipe connected to the grid near the equalized gas inlet, thereby causing the gas pressure fluctuation of the air flow in the TRT or BPRT exhaust pipe, and further affecting the stability of the operating conditions of the TRT or BPRT unit; in addition, the desulfurization tower 130 can also desulfurize the equalized gas.
所述煤气回收系统还包括均压煤气回收装置110，所述均压煤气回收装置110与所述均压煤气进气管连通。The gas recovery system further includes a pressure-equalizing gas recovery device 110 , and the pressure-equalizing gas recovery device 110 is connected to the pressure-equalizing gas inlet pipe.
所述煤气回收系统还包括除尘系统150，所述除尘系统150与所述高炉煤气管160连通。The coal gas recovery system further includes a dust removal system 150 , and the dust removal system 150 is in communication with the blast furnace gas pipe 160 .
所述脱硫塔130包括塔体，以及沿高度方向自下而上布置在塔体内部的预处理层、多个吸附层和预留层。其中，预处理层侧部的塔体上设检修孔。若干吸附层间隔布置，以便于气流在塔体内再分配，且每两层吸附层配置一个检修孔。The desulfurization tower 130 includes a tower body, and a pretreatment layer, a plurality of adsorption layers and a reserved layer arranged from bottom to top in the tower body along the height direction. A maintenance hole is provided on the tower body at the side of the pretreatment layer. Several adsorption layers are arranged at intervals to facilitate the redistribution of airflow in the tower body, and a maintenance hole is configured for every two adsorption layers.
所述预处理层的吸附剂采用球形颗粒状吸附材料堆积而成，预留层的高度可根据处理高炉煤气量进行定量调整；所述吸附层和预留层结构相同，二者的吸附剂采用规则块状吸附材料堆积中部，采用球形颗粒状吸附材料堆积四周。The adsorbent of the pretreatment layer is formed by stacking spherical granular adsorbent materials, and the height of the reserved layer can be quantitatively adjusted according to the amount of blast furnace gas to be processed; the adsorption layer and the reserved layer have the same structure, and the adsorbents of the two are formed by stacking regular block adsorbent materials in the middle and spherical granular adsorbent materials around them.
本发明中，预处理层、各吸附层和预留层均分别由支撑结构安装在塔体内部；所述检修孔方便吸附材料及时更换；吸附塔的外部设有保温结构；除上述配置外，吸附塔的其他设置及结构均为现有成熟技术，这里不再赘述。In the present invention, the pretreatment layer, each adsorption layer and the reserved layer are respectively installed inside the tower body by the supporting structure; the inspection hole facilitates the timely replacement of the adsorption material; the outside of the adsorption tower is provided with an insulation structure; in addition to the above configuration, the other settings and structures of the adsorption tower are existing mature technologies and will not be repeated here.
参考图1，所述煤气回收系统还包括再生煤气干管180和再生煤气支管190，所述再生煤气干管180与所述净煤气干管170连通，并与所述再生煤气支管190连通，所述再生煤气支管190与所述脱硫塔130连通，所述脱硫塔130与再生煤气出口管280连通。Referring to Figure 1, the coal gas recovery system also includes a regeneration coal gas main 180 and a regeneration coal gas branch 190. The regeneration coal gas main 180 is connected to the clean coal gas main 170 and to the regeneration coal gas branch 190. The regeneration coal gas branch 190 is connected to the desulfurization tower 130, and the desulfurization tower 130 is connected to the regeneration coal gas outlet pipe 280.
具体的，所述脱硫塔130的数量为至少两个，所述煤气回收系统还包括多个净煤气支管，所述脱硫塔通过所述净煤气支管与所述净煤气干管170连通，一个脱硫塔130与至少两个再生煤气支管190连通，且再生煤气支管190自所述脱硫塔130的顶部向所述脱硫塔130的底部依次分层设置，所述再生煤气出口管280与所述脱硫塔130的底部连通，所述高炉煤气管160与所述脱硫塔130的底部连通，所述净煤气干管与所述脱硫塔130的顶部连通，如此相较于再生煤气入口位置单一的脱硫塔130，可使进入脱硫塔130内的再生煤气形成均匀的温度场，从而起到较好的再生效果，可避免因为脱硫塔130的筒体比较大，再生煤气入口位置单一导致再生煤气在脱硫塔130内从低处流道高出，或者从高处流到低处后，温度降低达不到再生用煤气的温度要求，起不到较好的再生效果。Specifically, the number of the desulfurization towers 130 is at least two, and the gas recovery system further includes a plurality of clean gas branch pipes. The desulfurization tower is connected to the clean gas main pipe 170 through the clean gas branch pipes. One desulfurization tower 130 is connected to at least two regeneration gas branch pipes 190, and the regeneration gas branch pipes 190 are arranged in layers from the top of the desulfurization tower 130 to the bottom of the desulfurization tower 130. The regeneration gas outlet pipe 280 is connected to the bottom of the desulfurization tower 130, and the blast furnace gas pipe 160 is connected to the desulfurization tower 130. 0 is connected to the bottom of the desulfurization tower 130, and the clean gas main is connected to the top of the desulfurization tower 130. Compared with the desulfurization tower 130 with a single regeneration gas inlet, the regeneration gas entering the desulfurization tower 130 can form a uniform temperature field, thereby achieving a better regeneration effect. It can avoid the situation where the regeneration gas flows out from the lower flow channel in the desulfurization tower 130 due to the large cylinder of the desulfurization tower 130 and the single regeneration gas inlet, or the temperature drops to the point where it cannot meet the temperature requirement of the regeneration gas after flowing from a high place to a low place, thereby achieving a better regeneration effect.
当所述脱硫塔130进行脱硫时，所述再生煤气支管关闭，所述高炉煤气管160中的煤气自底部进入脱硫塔130，经脱硫塔130脱硫后从顶部的净煤气支管流入净煤气干管。当其中一个脱硫塔130的吸附剂再生时，所述脱硫塔130对应的净煤气支管关闭，再生煤气支管190打开，再生煤气进入脱硫塔130与吸附剂反应后，从底部的再生煤气出口管280流出。When the desulfurization tower 130 is performing desulfurization, the regeneration gas branch pipe is closed, and the gas in the blast furnace gas pipe 160 enters the desulfurization tower 130 from the bottom, and flows into the clean gas main pipe from the top clean gas branch pipe after desulfurization in the desulfurization tower 130. When the adsorbent of one of the desulfurization towers 130 is regenerated, the clean gas branch pipe corresponding to the desulfurization tower 130 is closed, and the regeneration gas branch pipe 190 is opened. After the regeneration gas enters the desulfurization tower 130 and reacts with the adsorbent, it flows out from the regeneration gas outlet pipe 280 at the bottom.
在其它的实施例中，再生煤气支管自所述脱硫塔130的底部向所述脱硫塔130的顶部依次分层设置，所述再生煤气出口管280与所述脱硫塔130的顶部连通，所述高炉煤气管160与所述脱硫塔130的顶部连通，所述净煤气干管与所述脱硫塔130的底部连通。In other embodiments, the regeneration gas branch pipes are arranged in layers from the bottom of the desulfurization tower 130 to the top of the desulfurization tower 130, the regeneration gas outlet pipe 280 is connected to the top of the desulfurization tower 130, the blast furnace gas pipe 160 is connected to the top of the desulfurization tower 130, and the clean gas main is connected to the bottom of the desulfurization tower 130.
本实施例中，所述再生煤气支管190的数量为多个，每层再生煤气支管190绕所述脱硫塔130的周向均匀分布，如此，可使再生煤气形成均匀的温度场，从而起到较好的再生效果。在其它的实施例中，所述再生煤气支管190的数量为多个，相邻两层再生煤气支管190交错分布。In this embodiment, there are multiple regeneration gas branch pipes 190, and each layer of regeneration gas branch pipes 190 is evenly distributed around the circumference of the desulfurization tower 130, so that the regeneration gas can form a uniform temperature field, thereby achieving a better regeneration effect. In other embodiments, there are multiple regeneration gas branch pipes 190, and the regeneration gas branch pipes 190 of two adjacent layers are staggered.
本实施例中，所述均压煤气进管120与所述脱硫塔130的底部连通。In this embodiment, the pressure-equalizing gas inlet pipe 120 is connected to the bottom of the desulfurization tower 130 .
本实施例中，一个脱硫塔130与三个再生煤气支管190连通，且再生煤气支管190分别与所述脱硫塔130的顶部、中部和底部连通。In this embodiment, one desulfurization tower 130 is connected to three regeneration gas branch pipes 190 , and the regeneration gas branch pipes 190 are connected to the top, middle and bottom of the desulfurization tower 130 , respectively.
所述净煤气干管上设置有用于检测净煤气干管中的净煤气的硫含量的硫含量传感器，当硫含量传感器检测的硫含量达到设定阈值时，通过所述再生煤气干管180和所述再生煤气支管190向所述脱硫塔内通入再生煤气。The clean gas main is provided with a sulfur content sensor for detecting the sulfur content of the clean gas in the clean gas main. When the sulfur content detected by the sulfur content sensor reaches a set threshold, the regeneration gas is introduced into the desulfurization tower through the regeneration gas main 180 and the regeneration gas branch pipe 190.
参考图1，所述煤气回收系统还包括第一换热器201，所述第一换热器201包括第一冷源流道和第一热源流道，所述再生煤气干管180与所述第一冷源流道连通，所述均压煤气进管120与所述第一热源流道连通。如此，可充分利用均压煤气内的热量，提高热量的利用率。Referring to FIG1 , the gas recovery system further includes a first heat exchanger 201, the first heat exchanger 201 includes a first cold source flow channel and a first heat source flow channel, the regeneration gas main pipe 180 is connected to the first cold source flow channel, and the pressure-equalizing gas inlet pipe 120 is connected to the first heat source flow channel. In this way, the heat in the pressure-equalizing gas can be fully utilized to improve the utilization rate of the heat.
参考图1，所述煤气回收系统还包括第二换热器202，所述第二换热器202包括第二冷源流道和第二热源流道，所述煤气回收系统还包括饱和蒸汽管道210和冷凝水管道220，所述饱和蒸汽管道210与所述第二热源流道入口连通，所述冷凝水管道220与所述第二热源流道出口连通，所述再生煤气干管180与所述第二冷源流道连通。 Referring to Figure 1, the coal gas recovery system also includes a second heat exchanger 202, the second heat exchanger 202 includes a second cold source flow channel and a second heat source flow channel, the coal gas recovery system also includes a saturated steam pipe 210 and a condensate pipe 220, the saturated steam pipe 210 is connected to the inlet of the second heat source flow channel, the condensate pipe 220 is connected to the outlet of the second heat source flow channel, and the regeneration gas main 180 is connected to the second cold source flow channel.
所述第一换热器201和所述第二换热器202并联，或者所述第一换热器201和所述第二换热器202串联。具体的，所述第一换热器201和所述第二换热器202并联是指两个所述换热器设置在两个并排设置的再生煤气干管180上，所述第一换热器201和所述第二换热器202串联是指第一换热器201和所述第二换热器202依次设置在所述再生煤气干管180上。The first heat exchanger 201 and the second heat exchanger 202 are connected in parallel, or the first heat exchanger 201 and the second heat exchanger 202 are connected in series. Specifically, the first heat exchanger 201 and the second heat exchanger 202 are connected in parallel, which means that the two heat exchangers are arranged on two regeneration gas mains 180 arranged side by side, and the first heat exchanger 201 and the second heat exchanger 202 are connected in series, which means that the first heat exchanger 201 and the second heat exchanger 202 are arranged on the regeneration gas mains 180 in sequence.
参考图1，所述煤气回收系统还包括电加热器230，所述电加热器设置在所述再生煤气干管180上，且位于所述第一换热器201和所述第二换热器202的下游。1 , the coal gas recovery system further includes an electric heater 230 , which is disposed on the regeneration coal gas main pipe 180 and is located downstream of the first heat exchanger 201 and the second heat exchanger 202 .
所述煤气回收系统还包括减压阀组240，所述减压阀组240设置在所述高炉煤气管160上。The gas recovery system further includes a pressure reducing valve group 240 , and the pressure reducing valve group 240 is disposed on the blast furnace gas pipe 160 .
所述煤气回收系统还包括消音器250，所述消音器250设置在所述高炉煤气管160上且位于所述脱硫塔130和所述减压阀组240之间。The gas recovery system further includes a muffler 250 , which is disposed on the blast furnace gas pipe 160 and located between the desulfurization tower 130 and the pressure reducing valve group 240 .
所述煤气回收系统还包括煤气发电机组260以及高炉煤气支管270，所述高炉煤气支管270的一端与所述除尘系统150连通，所述高炉煤气支管270的另一端与所述高炉煤气管160连通，且所述高炉煤气支管270的另一端位于所述消音器250和所述脱硫塔130之间，所述煤气发电机组260设置在所述高炉煤气支管270上。所述煤气发电机组260为TRT和BPRT中的一个。The gas recovery system further includes a gas generator set 260 and a blast furnace gas branch pipe 270, one end of the blast furnace gas branch pipe 270 is connected to the dust removal system 150, the other end of the blast furnace gas branch pipe 270 is connected to the blast furnace gas pipe 160, and the other end of the blast furnace gas branch pipe 270 is located between the muffler 250 and the desulfurization tower 130, and the gas generator set 260 is arranged on the blast furnace gas branch pipe 270. The gas generator set 260 is one of a TRT and a BPRT.
上述描述仅是对本发明较佳实施例的描述，并非对本发明范围的任何限定，本发明领域的普通技术人员根据上述揭示内容做的任何变更、修饰，均属于权利要求书的保护范围。 The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.
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