CN113652266A - Blast furnace gas desulfurization device and blast furnace gas desulfurization system - Google Patents
Blast furnace gas desulfurization device and blast furnace gas desulfurization system Download PDFInfo
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- CN113652266A CN113652266A CN202110944855.XA CN202110944855A CN113652266A CN 113652266 A CN113652266 A CN 113652266A CN 202110944855 A CN202110944855 A CN 202110944855A CN 113652266 A CN113652266 A CN 113652266A
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 123
- 230000023556 desulfurization Effects 0.000 title claims abstract description 123
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 47
- 239000003054 catalyst Substances 0.000 claims abstract description 22
- 239000000428 dust Substances 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000009467 reduction Effects 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 230000003197 catalytic effect Effects 0.000 abstract description 12
- 239000007789 gas Substances 0.000 description 136
- 238000006555 catalytic reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 125000001741 organic sulfur group Chemical group 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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- 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
-
- 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
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
-
- 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
- C10K1/34—Purifying combustible gases containing carbon monoxide by catalytic conversion of impurities to more readily removable materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a blast furnace gas desulfurization device, which comprises a plurality of desulfurization towers, a conveying pipe group, an air inlet pipe, a plurality of connecting pipes and an air outlet pipe, wherein the desulfurization towers are sequentially arranged and distributed along a preset path, and are horizontal desulfurization towers; the conveying pipe group comprises a plurality of conveying pipes, the conveying pipes are connected with two adjacent desulfurization towers, and the conveying pipes in the same conveying pipe group are distributed at intervals along the axial direction of the desulfurization towers; the air inlet pipe is arranged in parallel to the axial direction of the desulfurizing tower; the connecting pipes are respectively connected with the outlet of the air inlet pipe and the inlet of the uppermost stream positioned desulfurizing tower, and the connecting pipes are distributed at intervals along the axial direction of the desulfurizing tower; the gas outlet pipe is communicated with the most downstream desulfurizing tower. The invention provides a blast furnace gas desulfurization device and a blast furnace gas desulfurization system, aiming at improving the contact sufficiency of a catalyst and blast furnace gas and improving the catalytic effect of the catalyst.
Description
Technical Field
The invention belongs to the technical field of gas desulfurization, and particularly relates to a blast furnace gas desulfurization device and a blast furnace gas desulfurization system.
Background
The blast furnace gas is a byproduct combustible gas in the production process of the blast furnace, has large output and wide application, and can be used as fuel. Because blast furnace gas generated in the blast furnace ironmaking process is directly used as fuel without being desulfurized, SO in the flue gas emission of the heating furnace2The content exceeds the standard, so the blast furnace gas needs to be desulfurized.
When the horizontal desulfurization tower is used, generally, a plurality of horizontal desulfurization towers are sequentially connected in series to treat blast furnace gas, the blast furnace gas enters from an inlet of the horizontal desulfurization tower, upwards passes through a catalyst arranged along the axial direction of the horizontal desulfurization tower, and then flows into the next horizontal desulfurization tower from an outlet, and the inlet and the outlet are respectively arranged at two ends of the horizontal desulfurization tower along the axial direction. When the structure is adopted for connection, the flow field of blast furnace gas in the horizontal desulfurization tower is longer, the blast furnace gas can continuously pass through the catalyst at the position with smaller resistance, and the catalyst at the position with larger resistance can not generate catalytic action with the blast furnace gas, so that the catalytic effect of the catalyst is influenced.
Disclosure of Invention
The invention aims to provide a blast furnace gas desulfurization device and a blast furnace gas desulfurization system, aiming at improving the contact sufficiency of a catalyst and blast furnace gas and improving the catalytic effect of the catalyst.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a blast furnace gas desulfurization device comprising:
the desulfurization towers are sequentially arranged along a preset path, and are horizontal desulfurization towers;
the conveying pipe group comprises a plurality of conveying pipes, the conveying pipes are connected with two adjacent desulfurization towers, and the plurality of conveying pipes in the same conveying pipe group are distributed at intervals along the axial direction of the desulfurization towers;
the air inlet pipe is arranged in parallel to the axial direction of the desulfurizing tower;
the connecting pipes are respectively connected to the outlet of the air inlet pipe and the inlet of the most upstream desulfurizing tower, and are distributed at intervals along the axial direction of the desulfurizing tower; and
and the gas outlet pipe is communicated with the most downstream desulfurizing tower.
In a possible implementation manner, a support plate is axially arranged in the desulfurization tower, the support plate divides an inner cavity of the desulfurization tower into an air inlet chamber and an air outlet chamber which are distributed along the vertical direction, a plurality of air holes communicating the air inlet chamber and the air outlet chamber are formed in the support plate, and a catalyst is covered on the support plate;
in two adjacent desulfurization towers, the air inlet end of the conveying pipe is communicated with the air outlet chamber of the upstream desulfurization tower, and the air outlet end of the conveying pipe is communicated with the air inlet chamber of the downstream desulfurization tower;
the connecting pipe is communicated with the air inlet chamber of the uppermost stream of the desulfurizing tower, and the air outlet pipe is communicated with the air outlet chamber of the lowermost stream of the desulfurizing tower.
In a possible implementation manner, the air inlet chambers and the air outlet chambers of two adjacent desulfurization towers are distributed in a staggered manner.
In a possible implementation manner, the air inlet chamber and the air outlet chamber of two adjacent desulfurization towers are distributed in the same direction.
In a possible implementation manner, the gas inlet chamber and the gas outlet chamber of two adjacent desulfurization towers are a combination of equidirectional distribution and staggered distribution.
In a possible implementation manner, the conveying pipe comprises a conveying part and connecting parts arranged at two ends of the conveying part, the connecting parts are used for being communicated with the desulfurizing tower, the conveying part and the connecting parts are straight pipes, and the connecting parts and the conveying part are arranged at included angles.
In a possible realization, the predetermined path is a straight path, and the angle between the axes of the connecting part and the conveying part is 140-160 °.
In a possible implementation manner, the conveying pipe comprises a conveying part and connecting parts arranged at two ends of the conveying part, the connecting parts are used for being communicated with the desulfurizing tower, the conveying part is a straight pipe, and the connecting parts are arc-shaped pipes.
The blast furnace gas desulfurization device provided by the invention has the beneficial effects that: compared with the prior art, the blast furnace gas in the blast furnace gas desulphurization device enters the most upstream desulphurization tower from the gas inlet pipe along the connecting pipe, then is introduced into the next desulphurization tower along the conveying pipe, and finally is output outwards from the most downstream desulphurization tower through the gas outlet pipe. The plurality of conveying pipes are distributed along the axial direction of the desulfurization tower, blast furnace gas can be uniformly introduced into the most upstream desulfurization tower, the flow field of the blast furnace gas in the most upstream desulfurization tower is reduced, so that a catalyst in the desulfurization tower can be in contact with the blast furnace gas and can generate catalytic reaction, and the catalytic effect is improved. The adjacent desulfurization towers are communicated through the conveying pipes, the plurality of conveying pipes in the same conveying pipe group are sequentially distributed along the axis of the desulfurization tower, so that the blast furnace gas can be uniformly introduced into the adjacent desulfurization towers along the conveying pipes, the flow field of the blast furnace gas in the uppermost-stream desulfurization tower is reduced, and the catalyst in the desulfurization towers can be fully contacted with the blast furnace gas and can generate catalytic reaction. The device realizes the effect of uniformly introducing blast furnace gas into the desulfurization tower by axially distributing a plurality of connecting pipes and a plurality of conveying pipes in the same conveying pipe group along the desulfurization tower, reduces the flow field of the blast furnace gas in the desulfurization tower, ensures that the catalyst in the desulfurization tower can react with the blast furnace gas, and improves the catalytic effect.
The blast furnace gas desulfurization system comprises the blast furnace gas desulfurization device, a blast furnace, a dust removal device, a conversion device, a turbine and a pressure reduction device, wherein:
the blast furnace, the dust removal device, the conversion device, the turbine and the air inlet pipe are sequentially connected to form a first passage;
the blast furnace, the dust removal device, the turbine and the air inlet pipe are sequentially connected to form a second passage; and
the blast furnace, the dust removal device, the conversion device, the pressure reduction device and the air inlet pipe are sequentially connected to form a third passage;
in normal operation, blast furnace gas flows along the first path; when the switching device fails, blast furnace gas flows along the second path; when the turbine fails, blast furnace gas flows along the third path.
In a possible implementation manner, a discharge port of the dust removal device is respectively communicated with a feed port of the conversion device and a feed port of the turbine through a discharge pipeline, and a first switch is arranged on the discharge pipeline corresponding to the turbine.
The blast furnace gas desulfurization system provided by the invention has the beneficial effects that: compared with the prior art, when the device is normally used, the blast furnace gas flows along the first passage, the dust removing device removes dust and filters particles in the blast furnace gas, organic sulfur in the blast furnace gas is converted into inorganic sulfur in the conversion device, the high-pressure blast furnace gas is reduced in pressure by the turbine and then is introduced into the blast furnace gas desulfurization device to perform desulfurization treatment on the blast furnace gas, so that the discharged blast furnace gas meets the requirements. When the turbine has a fault, the blast furnace gas flows along the second path, and the blast furnace gas is subjected to pressure reduction treatment by the pressure reduction device; when the conversion device breaks down, the blast furnace gas flows along the third path, and after passing through the dust removal device, the blast furnace gas is subjected to pressure reduction treatment by the turbine and then directly introduced into the blast furnace gas desulfurization device. The second passage and the third passage can ensure that the system can be normally used when the conversion device or the turbine breaks down, and the working efficiency is improved. The system has simple structure, can effectively ensure that the blast furnace gas can be continuously and stably desulfurized under the condition of not increasing other equipment, and reduces the loss caused by shutdown of the device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a top view of a blast furnace gas desulfurization apparatus according to one embodiment of the present invention;
FIG. 2 is a side sectional view of a blast furnace gas desulfurization apparatus according to one embodiment of the present invention;
FIG. 3 is a side sectional view of a blast furnace gas desulfurization apparatus according to a second embodiment of the present invention;
FIG. 4 is a side sectional view of a blast furnace gas desulfurization apparatus according to a third embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a blast furnace gas desulfurization system used in the fourth embodiment of the present invention.
In the figure: 1. an air inlet pipe; 2. a connecting pipe; 3. a delivery pipe; 301. a conveying section; 302. a connecting portion; 4. a desulfurizing tower; 401. an air outlet chamber; 402. an air intake chamber; 5. an air outlet pipe; 6. a catalyst; 7. a support plate; 8. a first switch; 9. a blast furnace; 10. a dust removal device; 11. a pressure reducing device; 12. a second switch; 13. a conversion device; 14. a turbine.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 4 together, a blast furnace gas desulfurization apparatus according to the present invention will now be described. The blast furnace gas desulfurization device comprises a plurality of desulfurization towers 4, a conveying pipe group, an air inlet pipe 1, a plurality of connecting pipes 2 and an air outlet pipe 5, wherein the desulfurization towers 4 are sequentially arranged and distributed along a preset path, and the desulfurization towers 4 are horizontal desulfurization towers 4; the conveying pipe group comprises a plurality of conveying pipes 3, the conveying pipes 3 are connected with two adjacent desulfurization towers 4, and the conveying pipes 3 in the same conveying pipe group are distributed at intervals along the axial direction of the desulfurization towers 4; the air inlet pipe 1 is arranged in parallel to the axial direction of the desulfurizing tower 4; the connecting pipes 2 are respectively connected with the outlet of the air inlet pipe 1 and the inlet of the most upstream desulfurizing tower 4, and the connecting pipes 2 are distributed at intervals along the axial direction of the desulfurizing tower 4; the outlet pipe 5 is communicated with the most downstream desulfurizing tower 4.
Compared with the prior art, the blast furnace gas desulfurization device provided by the invention has the advantages that the blast furnace gas in the blast furnace gas desulfurization device enters the most upstream desulfurization tower 4 from the gas inlet pipe 1 along the connecting pipe 2, then enters the next desulfurization tower 4 along the conveying pipe 3, and finally is output outwards from the most downstream desulfurization tower 4 through the gas outlet pipe 5. The conveying pipes 3 are distributed along the axial direction of the desulfurizing tower 4, so that the blast furnace gas can be uniformly introduced into the uppermost desulfurizing tower 4, the flow field of the blast furnace gas in the uppermost desulfurizing tower 4 is reduced, the catalyst 6 in the desulfurizing tower 4 can be contacted with the blast furnace gas and can generate catalytic reaction, and the catalytic effect is improved. The adjacent desulfurization towers 4 are communicated through the conveying pipes 3, the conveying pipes 3 of the same conveying pipe group are sequentially distributed along the axis of the desulfurization tower 4, so that the blast furnace gas can be uniformly introduced into the adjacent desulfurization towers 4 along the conveying pipes 3, the flow field of the blast furnace gas in the uppermost stream desulfurization tower 4 is reduced, and the catalyst 6 in the desulfurization tower 4 can be fully contacted with the blast furnace gas and can perform catalytic reaction. This device has realized evenly letting in blast furnace gas's effect in desulfurizing tower 4 through the axial distribution of a plurality of conveyer pipes 3 along desulfurizing tower 4 with a plurality of connecting pipes 2 and same conveyer pipe nest of tubes, has reduced the flow field of blast furnace gas in desulfurizing tower 4, makes catalyst 6 homoenergetic in desulfurizing tower 4 react with blast furnace gas, has improved catalytic effect.
Specifically, the predetermined path may be a straight path, an arc path or an undulation path, or other non-closed paths, which are not limited herein.
In some embodiments, referring to fig. 1 to 4, a support plate 7 is axially disposed in the desulfurization tower 4, the support plate 7 divides an inner cavity of the desulfurization tower 4 into an air inlet chamber 402 and an air outlet chamber 401 which are distributed along the up-down direction, a plurality of air holes communicating the air inlet chamber 402 and the air outlet chamber 401 are formed in the support plate 7, and the support plate 7 is covered with a catalyst 6;
in two adjacent desulfurization towers 4, the air inlet end of the conveying pipe 3 is communicated with the air outlet cavity 401 of the upstream desulfurization tower 4, and the air outlet end is communicated with the air inlet cavity 402 of the downstream desulfurization tower 4;
the connecting pipe 2 is communicated with the air inlet cavity 402 of the most upstream desulfurizing tower 4, and the air outlet pipe 5 is communicated with the air outlet cavity 401 of the most downstream desulfurizing tower 4.
In this embodiment, the blast furnace gas enters the gas inlet chamber 402 of the most upstream desulfurizing tower 4, passes through the supporting plate 7 through the gas holes to contact with the catalyst 6, enters the gas outlet chamber 401, and is discharged to the conveying pipe 3, and then passes through the plurality of desulfurizing towers 4 and is discharged to the outside through the gas outlet pipe 5. In this way, the catalyst 6 can be brought into sufficient contact with the blast furnace gas. The support plate 7 is arranged along the axial direction of the desulfurizing tower 4, so that the laying area of the catalyst 6 can be increased, the contact area of the catalyst 6 and blast furnace gas is increased, and the catalytic efficiency is improved.
In some embodiments, referring to fig. 1 to 2, the inlet chambers 402 and the outlet chambers 401 of two adjacent desulfurization towers 4 are distributed in a staggered manner.
After the blast furnace gas enters the gas inlet cavity 402 in the uppermost desulfurizing tower 4, the blast furnace gas flows into the gas inlet cavity 402 in the next desulfurizing tower 4 from the gas outlet cavity 401, the gas inlet cavities 402 and the gas outlet cavities 401 of the two adjacent desulfurizing towers 4 are distributed in a staggered manner, the length of the conveying pipe 3 is reduced, and the phenomenon that the blast furnace gas is retained in the conveying pipe 3 due to excessive turning of the conveying pipe 3 is avoided.
In some embodiments, referring to fig. 3, the inlet chambers 402 and the outlet chambers 401 of two adjacent desulfurization towers 4 are distributed in the same direction.
By adopting the communication mode of the structure, the length of the conveying pipe 3 is prolonged, and the backflow of blast furnace gas is avoided. Moreover, the longer duct 3 can increase the time of the blast furnace gas in the desulfurizing tower 4, and the blast furnace gas can be brought into sufficient contact with the catalytic machine 6.
In some embodiments, referring to fig. 4, the inlet chambers 402 and the outlet chambers 401 of two adjacent desulfurization towers 4 are a combination of co-directional distribution and staggered distribution.
The air inlet cavities 402 and the air outlet cavities 401 of the two adjacent desulfurization towers 4 are distributed in a staggered manner, so that the length of the conveying pipe 3 is reduced, and the condition that the blast furnace gas is retained in the conveying pipe 3 due to excessive turning of the conveying pipe 3 is also avoided. The air inlet chambers 402 and the air outlet chambers 401 of the two adjacent desulfurization towers 4 are distributed in the same direction, so that the length of the conveying pipe 3 is prolonged, and the backflow of blast furnace gas is avoided. Moreover, the longer duct 3 can increase the time of the blast furnace gas in the desulfurizing tower 4, and the blast furnace gas can be brought into sufficient contact with the catalytic machine 6. The two setting modes are combined for use, so that the reaction between the blast furnace gas and the catalytic machine 6 is increased, and the influence on the desulfurization effect caused by the fact that the blast furnace gas stays in the conveying pipe 3 or the desulfurization tower 4 for a long time is avoided.
In some embodiments, referring to fig. 2, the conveying pipe 3 includes a conveying portion 301 and connecting portions 302 disposed at two ends of the conveying portion 301, the connecting portions 302 are used for communicating with the desulfurizing tower 4, the conveying portion 301 and the connecting portions 302 are both straight pipes, and the connecting portions 302 and the conveying portion 301 are disposed at an included angle.
Blast furnace gas gets into connecting portion 302 from desulfurizing tower 4, then along conveying part 301, in connecting portion 302 gets into adjacent desulfurizing tower 4, connecting pipe 2 is the contained angle setting with conveying part 301 and can avoids the reverse circulation of blast furnace gas in the adjacent desulfurizing tower 4 to get into connecting portion 302, guarantees that blast furnace gas circulates along predetermineeing the route.
In some embodiments, referring to fig. 2, the predetermined path is a linear path, and the included angle between the axes of the connecting portion 302 and the conveying portion 301 is 140 ° and 160 °.
The included angle between the axes of the connecting part 302 and the conveying part 301 is 140-160 degrees, so that the blast furnace gas in the adjacent desulfurizing tower 4 is prevented from reversely flowing into the connecting part 302, and the blast furnace gas is prevented from accumulating at the corner due to too small included angle, and the flow of the blast furnace gas is not influenced.
Optionally, the angle between the axes of the connecting portion 302 and the conveying portion 301 is 150 °.
In some embodiments, referring to fig. 3, the conveying pipe 3 includes a conveying portion 301 and connecting portions 302 disposed at two ends of the conveying portion 301, the connecting portions 302 are used for communicating with the desulfurizing tower 4, the conveying portion 301 is a straight pipe, and the connecting portions 302 are arc pipes.
The connecting part 302 is a straight line pipe connection of the arc-shaped pipe and the conveying part 301, so that the phenomenon that the straight line pipe is adopted to cause the bending angle of the connecting part 302 and the conveying part 301 to be too small, so that the blast furnace gas is gathered at the bending part to influence the flow of the blast furnace gas is avoided. Meanwhile, the arc-shaped pipe adopted by the connecting part 302 can also avoid the backflow of blast furnace gas.
Referring to fig. 5, the blast furnace gas desulfurization system comprises any one of the above blast furnace gas desulfurization devices, and further comprises a blast furnace 9, a dust removal device 10, a conversion device 13, a turbine 14 and a pressure reduction device 11, wherein the blast furnace 9, the dust removal device 10, the conversion device 13, the turbine 14 and the gas inlet pipe 1 are sequentially connected to form a first passage; the blast furnace 9, the dust removing device 10, the turbine 14 and the air inlet pipe 1 are sequentially connected to form a second passage; the blast furnace 9, the dust removal device 10, the conversion device 13, the pressure reduction device 11 and the air inlet pipe 1 are sequentially connected to form a third passage;
when the blast furnace gas works normally, the blast furnace gas flows along the first path; when the switching device 13 fails, the blast furnace gas flows along the second path; when the turbine 14 fails, the blast furnace gas flows along the third path.
When the device is in normal use, the blast furnace gas flows along the first passage, the dust removal device 10 removes dust and filters particles in the blast furnace gas, organic sulfur in the blast furnace gas is converted into inorganic sulfur in the conversion device 13, the high-pressure blast furnace gas is reduced in pressure through the turbine 14, and then the high-pressure blast furnace gas is introduced into the blast furnace gas desulfurization device to perform desulfurization treatment on the blast furnace gas, so that the discharged blast furnace gas meets the requirements. When the turbine 14 has a fault, the blast furnace gas flows along the second path, and the blast furnace gas is subjected to pressure reduction treatment by the pressure reducing device 11; when the conversion device 13 has a fault, the blast furnace gas flows along the third path, passes through the dust removal device 10, then is subjected to pressure reduction treatment by the turbine 14, and then is directly introduced into the blast furnace gas desulfurization device. The second path and the third path can ensure that the system can be normally used when the conversion device 13 or the turbine 14 has a fault, and the working efficiency is improved. The system has simple structure, can effectively ensure that the blast furnace gas can be continuously and stably desulfurized under the condition of not increasing other equipment, and reduces the loss caused by shutdown of the device.
In some embodiments, referring to fig. 5, the discharge ports of the dust removing device 10 are respectively communicated with the feed port of the converting device 13 and the feed port of the turbine 14 through discharge pipes, and the discharge pipes corresponding to the turbine 14 are provided with first switches 8.
In this embodiment, when the switching device 13 fails, the first switch 8 is activated to allow the blast furnace gas to flow along the second channel, thereby ensuring the normal operation of the whole system. When the second path is not enabled, the first switch 8 is in the off state. The first switch 8 can ensure that the blast furnace gas flows along a given line, and the flow line of the blast furnace gas can be conveniently switched.
In some embodiments, referring to fig. 5, the feeding ports of the desulfurization device are respectively communicated with the discharging port of the pressure reduction device 11 and the discharging port of the turbine 14 through feeding pipes, and the discharging pipe corresponding to the pressure reduction device 11 is provided with a second switch 12.
When the turbine 14 fails, the second switch 12 is opened to enable the blast furnace gas to flow along the third channel, and the pressure reduction device 11 is used for carrying out pressure reduction treatment on the blast furnace gas to ensure that the treated gas is conveyed outwards in a normal pressure state. The second switch 12 can ensure that the blast furnace gas flows along a given line, and the flow line of the blast furnace gas can be conveniently switched.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A blast furnace gas desulfurization device, characterized by comprising:
the desulfurization towers are sequentially arranged along a preset path, and are horizontal desulfurization towers;
the conveying pipe group comprises a plurality of conveying pipes, the conveying pipes are connected with two adjacent desulfurization towers, and the plurality of conveying pipes in the same conveying pipe group are distributed at intervals along the axial direction of the desulfurization towers;
the air inlet pipe is arranged in parallel to the axial direction of the desulfurizing tower;
the connecting pipes are respectively connected to the outlet of the air inlet pipe and the inlet of the most upstream desulfurizing tower, and are distributed at intervals along the axial direction of the desulfurizing tower; and
and the gas outlet pipe is communicated with the most downstream desulfurizing tower.
2. The blast furnace gas desulfurization device according to claim 1, wherein a support plate is axially disposed in the desulfurization tower, the support plate divides an inner cavity of the desulfurization tower into an air inlet chamber and an air outlet chamber which are vertically distributed, the support plate is provided with a plurality of air vents communicating the air inlet chamber and the air outlet chamber, and the support plate is covered with a catalyst;
in two adjacent desulfurization towers, the air inlet end of the conveying pipe is communicated with the air outlet chamber of the upstream desulfurization tower, and the air outlet end of the conveying pipe is communicated with the air inlet chamber of the downstream desulfurization tower;
the connecting pipe is communicated with the air inlet chamber of the uppermost stream of the desulfurizing tower, and the air outlet pipe is communicated with the air outlet chamber of the lowermost stream of the desulfurizing tower.
3. The blast furnace gas desulfurization apparatus according to claim 2, wherein the gas inlet chambers and the gas outlet chambers of two adjacent desulfurization towers are staggered.
4. The blast furnace gas desulfurization apparatus according to claim 2, wherein the gas inlet chambers and the gas outlet chambers of two adjacent desulfurization towers are distributed in the same direction.
5. The blast furnace gas desulfurization apparatus according to claim 2, wherein the gas inlet chambers and the gas outlet chambers of two adjacent desulfurization towers are a combination of a co-directional distribution and a staggered distribution.
6. The blast furnace gas desulfurization apparatus according to claim 3, wherein the duct comprises a duct portion and connecting portions provided at both ends of the duct portion, the connecting portions being adapted to communicate with the desulfurization tower, the duct portion and the connecting portions being straight ducts, the connecting portions being disposed at an angle to the duct portion.
7. The blast furnace gas desulfurization apparatus according to claim 6, wherein the predetermined path is a straight path, and the axis of the connecting portion and the conveying portion forms an angle of 140 ° to 160 °.
8. The blast furnace gas desulfurization apparatus according to claim 4, wherein the conveying pipe comprises a conveying portion and connecting portions provided at both ends of the conveying portion, the connecting portions being adapted to communicate with the desulfurization tower, the conveying portion being a straight pipe, and the connecting portions being arc pipes.
9. A blast furnace gas desulfurization system comprising the blast furnace gas desulfurization apparatus according to any one of claims 1 to 8, and further comprising a blast furnace, a dust removal apparatus, a conversion apparatus, a turbine, and a pressure reduction apparatus, wherein:
the blast furnace, the dust removal device, the conversion device, the turbine and the air inlet pipe are sequentially connected to form a first passage;
the blast furnace, the dust removal device, the turbine and the air inlet pipe are sequentially connected to form a second passage; and
the blast furnace, the dust removal device, the conversion device, the pressure reduction device and the air inlet pipe are sequentially connected to form a third passage;
in normal operation, blast furnace gas flows along the first path; when the switching device fails, blast furnace gas flows along the second path; when the turbine fails, blast furnace gas flows along the third path.
10. The blast furnace gas desulfurization system according to claim 9, wherein the discharge port of the dust removal device is respectively communicated with the feed port of the conversion device and the feed port of the turbine through discharge pipes, and the discharge pipe corresponding to the turbine is provided with a first switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110944855.XA CN113652266A (en) | 2021-08-17 | 2021-08-17 | Blast furnace gas desulfurization device and blast furnace gas desulfurization system |
Applications Claiming Priority (1)
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|---|---|---|---|---|
| JP2001271074A (en) * | 2000-03-28 | 2001-10-02 | Kawasaki Steel Corp | Method for desulfurizing coke oven gas |
| CN106563350A (en) * | 2016-09-23 | 2017-04-19 | 中冶华天南京工程技术有限公司 | Horizontal modular flue gas desulfurization and denitrification adsorption regeneration integrated system |
| CN206469058U (en) * | 2017-02-10 | 2017-09-05 | 佛山市汽车燃气有限公司 | Liquefied natural gas filling device |
| CN112812857A (en) * | 2021-03-10 | 2021-05-18 | 中冶华天南京工程技术有限公司 | Novel horizontal desulfurizing tower of blast furnace gas dry process |
| CN113186001A (en) * | 2021-04-07 | 2021-07-30 | 新兴铸管股份有限公司 | Blast furnace gas fine desulfurization system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001271074A (en) * | 2000-03-28 | 2001-10-02 | Kawasaki Steel Corp | Method for desulfurizing coke oven gas |
| CN106563350A (en) * | 2016-09-23 | 2017-04-19 | 中冶华天南京工程技术有限公司 | Horizontal modular flue gas desulfurization and denitrification adsorption regeneration integrated system |
| CN206469058U (en) * | 2017-02-10 | 2017-09-05 | 佛山市汽车燃气有限公司 | Liquefied natural gas filling device |
| CN112812857A (en) * | 2021-03-10 | 2021-05-18 | 中冶华天南京工程技术有限公司 | Novel horizontal desulfurizing tower of blast furnace gas dry process |
| CN113186001A (en) * | 2021-04-07 | 2021-07-30 | 新兴铸管股份有限公司 | Blast furnace gas fine desulfurization system |
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Application publication date: 20211116 |