CN212955026U - Blast furnace gas desulfurizing tower - Google Patents
Blast furnace gas desulfurizing tower Download PDFInfo
- Publication number
- CN212955026U CN212955026U CN202021492183.0U CN202021492183U CN212955026U CN 212955026 U CN212955026 U CN 212955026U CN 202021492183 U CN202021492183 U CN 202021492183U CN 212955026 U CN212955026 U CN 212955026U
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- Prior art keywords
- desulfurization
- hydrolysis
- fixed
- pipe
- blast furnace
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- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 54
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 76
- 230000007062 hydrolysis Effects 0.000 claims abstract description 75
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 73
- 230000023556 desulfurization Effects 0.000 claims abstract description 73
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 125000001741 organic sulfur group Chemical group 0.000 claims abstract description 17
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 238000005086 pumping Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 8
- 230000003197 catalytic effect Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003546 flue gas Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- 239000003034 coal gas Substances 0.000 description 19
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
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Abstract
The utility model discloses a blast furnace gas desulfurizing tower, relating to the technical field related to blast furnace ironmaking. The utility model discloses a hydrolysis cooling tower, the case of hydrolysising, even pipe, desulfurizing tower main part and desulfurization case, the bottom mounting in the hydrolysis cooling tower has the case of hydrolysising, organic sulphur hydrolysis catalysis liquid is deposited to the inside of case of hydrolysising, be fixed with first ring canal on the inner wall on hydrolysis cooling tower upper portion, the bottom mounting in the desulfurizing tower main part has the desulfurizing box, complex iron catalysis liquid is deposited to the inside of desulfurizing box, the inboard at desulfurizing tower main part middle part is fixed with toper desulfurization cover, all be fixed with the second ring canal on the desulfurizing tower main part inner wall of toper desulfurization cover upper and lower side, the through even pipe through connection of hydrolysis cooling tower and desulfurizing tower main part. The utility model discloses a set up the cooling tower that hydrolysises, hydrolysis case, first ring canal, desulfurizing tower main part, desulfurization case, toper desulfurization cover, second ring canal, solved the organic sulfur that contains among the blast furnace gas desulfurization process can't get rid of and the problem of inefficiency in the wet flue gas desulfurization technology of blast furnace gas.
Description
Technical Field
The utility model belongs to the technical field of blast furnace ironmaking is relevant, especially relate to a blast furnace gas desulfurizing tower.
Background
Blast furnace gas is a byproduct combustible gas in the blast furnace ironmaking production process. Its composition is mainly composed of carbon dioxide 6-12%, carbon monoxide 28-33%, hydrogen 1-4%, nitrogen 55-60%, hydrocarbon 0.2-0.5% and small quantity of sulfide. The blast furnace gas comprises the following main components: CO, CO2, N2, H2, CH4 and the like, wherein the content of combustible components CO is about 25 percent, the content of H2 and CH4 is little, the content of CO2 and N2 respectively accounts for 15 percent and 55 percent, and the calorific value is only about 3500kJ/m 3. Although the content of H2S in blast furnace gas is not high, it contains a certain amount of organic sulfur such as COS, and these organic sulfur cannot be completely or mostly removed in various desulfurization processes, and in the conventional desulfurization process, especially wet desulfurization, most of the sulfides cannot be removed, and the wet desulfurization process has too much requirements, and a large contact area and a long contact time between gas and liquid cannot be ensured, so that the desulfurization efficiency is not high, and the requirements in practical use cannot be met, so that there is a strong need in the market for improved techniques to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a blast furnace gas desulfurizing tower, through setting up the cooling tower that hydrolysises, hydrolysis tank, first ring canal, desulfurizing tower main part, desulfurization case, toper desulfurization cover, second ring canal, solved the problem that organic sulfur that contains in the blast furnace gas desulfurization process can't get rid of and the low efficiency in the wet flue gas desulfurization technology of blast furnace gas.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a blast furnace gas desulfurizing tower, including hydrolysis cooling tower, hydrolysis tank, even pipe, desulfurizing tower main part and desulfurization box, the bottom mounting in the hydrolysis cooling tower has the hydrolysis tank, organic sulfur hydrolysis catalyst liquid is deposited to the inside of hydrolysis tank, be fixed with first ring canal on the inner wall on hydrolysis cooling tower upper portion, the internal bottom mounting of desulfurizing tower main part has the desulfurizing box, complex iron catalysis liquid is deposited to the inside of desulfurizing box, the inboard at desulfurizing tower main part middle part is fixed with the toper cover of desulfurization, all be fixed with the second ring canal on the desulfurizing tower main part inner wall of toper upper and lower side of desulfurization cover, the top of hydrolysis cooling tower and desulfurizing tower main part is through being linked to each other the pipe through connection, the middle part of even pipe link up and is fixed with the draught fan.
Furthermore, a first water pump is fixed on the outer side wall of the hydrolysis cooling tower, a first liquid pumping pipe is fixed at the water pumping end of the first water pump, penetrates through the hydrolysis cooling tower and extends into the bottom end of the hydrolysis tank, and a first liquid outlet pipe is fixed at the water outlet end of the first water pump, penetrates through the hydrolysis cooling tower and is in through connection with the upper end of the first ring pipe.
Further, be fixed with the second water pump on the lateral wall of desulfurizing tower main part, the pumping end of second water pump is fixed with the second liquid suction pipe and runs through the desulfurizing tower main part and stretch into the bottom in the desulfurization case, the liquid outlet end of second water pump is fixed with the second drain pipe and runs through desulfurizing tower main part and two sets of second ring pipe through connections.
Furthermore, the first ring pipe and the second ring pipe have the same structure, the bottom end of the first ring pipe is fixed with atomizing nozzles in an annular array, and the inside of the atomizing nozzles is communicated with the first ring pipe.
Furthermore, through holes are formed in the conical side wall of the conical desulfurization cover at equal intervals, and a liquid outlet hole is formed in the bottom end of the conical desulfurization cover in a penetrating mode.
Furthermore, the hydrolysis cooling tower is provided with an air inlet pipe in a penetrating manner on one side far away from the first water pump, the air inlet pipe is connected with the hydrolysis box in a penetrating manner, a coal gas outlet is arranged on one side far away from the second water pump in the desulfurization tower main body in a penetrating manner, and the coal gas outlet is positioned above the desulfurization box.
The utility model discloses following beneficial effect has:
1. the utility model discloses a set up the cooling tower of hydrolysising, hydrolysis case, first ring canal, solved the problem that the organic sulfur that contains can't get rid of among the blast furnace gas desulfurization process, the utility model discloses can change the organic sulfur that exists in the coal gas, make it change the inorganic sulphide that can conveniently get rid of, conveniently get rid of in follow-up desulfurization process, the utility model discloses a hydrolysis method gets rid of the organic sulfur, makes things convenient for subsequent desulfurization process, makes the sulphide in the coal gas get rid of more thoroughly, guarantees the nuisanceless use of coal gas.
2. The utility model discloses a set up desulfurizing tower main part, desulfurization case, toper desulfurization cover, second ring pipe, solved the problem of inefficiency in the wet flue gas desulfurization technology of blast furnace gas, the utility model discloses an incident desulfurization technology perfect more, the area that makes contact between gas-liquid is bigger, the time of contact is longer, and realize nuisanceless processing, environmental protection more, and is high-efficient, carries out wet flue gas desulfurization in the desulfurizing tower main part, the catalytic liquid that forms through the complex iron catalyst sprays, contacts with the coal gas, forms the atomizing desulfurization effect, cooperation toper desulfurization cover is separated, slows down the desulfurization process to increase area of contact, guarantee the high-efficient processing of desulfurization.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a structural diagram of the hydrolysis cooling tower and the desulfurizing tower of the present invention;
FIG. 3 is a structural diagram of the conical desulfurization cover of the present invention;
FIG. 4 is a view showing the structure of the first grommet of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. a hydrolysis cooling tower; 2. a hydrolysis tank; 21. organic sulfur hydrolysis catalyst liquid; 22. an air inlet pipe; 3. a first grommet; 31. an atomizing spray head; 4. a first water pump; 41. a first liquid suction pipe; 42. a first liquid outlet pipe; 5. connecting pipes; 51. an induced draft fan; 6. a main body of the desulfurizing tower; 61. a coal gas outlet; 7. a desulfurization box; 71. complexing iron catalytic liquid; 8. a second water pump; 81. a second liquid suction pipe; 82. a second liquid outlet pipe; 9. a second collar pipe; 10. a conical desulfurization hood; 101. a through hole; 102. and a liquid outlet hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Please refer to fig. 1-2, the utility model relates to a blast furnace gas desulfurizing tower, which comprises a hydrolysis cooling tower 1, a hydrolysis tank 2, a connecting pipe 5, a desulfurizing tower main body 6 and a desulfurizing tank 7, wherein the bottom end of the hydrolysis cooling tower 1 is fixed with the hydrolysis tank 2, organic sulfur hydrolysis catalyst liquid 21 is stored in the hydrolysis tank 2, the hydrolysis tank 2 is arranged in the hydrolysis cooling tower 1, the hydrolysis tank 2 stores the organic sulfur hydrolysis catalyst liquid 21, the gas is introduced into the hydrolysis tank and reacts with the gas, the COS in the hydrolysis tank is decomposed, the decomposition of organic matters is completed, then water is pumped out by a first water pump 4, the water is sprayed out by a first ring pipe 3 and an atomizing nozzle 31, the atomizing spray is completed, the gas guided out from the hydrolysis tank 2 is contacted with the gas, the cooling can be realized, the operation of removing the organic sulfur can be realized, the first ring pipe 3 is fixed on the inner wall of the upper, the organic sulfur hydrolysis catalyst solution 21 is atomized and sprayed out through the first ring pipe 3, so that large-area contact of gas and liquid is realized, a comprehensive hydrolysis process is realized, and cooling and temperature reduction are realized; a desulfurizing box 7 is fixed at the bottom end in the desulfurizing tower main body 6, a complex iron catalytic liquid 71 is stored in the desulfurizing box 7, second ring pipes 9 are fixed on the inner walls of the desulfurizing tower main body 6 above and below the conical desulfurizing cover 10, the complex iron catalytic liquid 71 in the desulfurizing box 7 is sprayed out through the second ring pipes 9 and the atomizing nozzles 31 at the bottom ends of the second ring pipes 9 to be contacted with hydrolyzed coal gas to remove hydrogen sulfide in the coal gas, the conical desulfurizing cover 10 separates the inside of the desulfurizing tower main body 6 to form two areas, so that large-area long-time gas-liquid contact is realized, rapid removal of sulfide is ensured, and purity of the coal gas is ensured; the inboard at the middle part of desulfurizing tower main part 6 is fixed with toper desulfurization cover 10, and the top of hydrolysis cooling tower 1 and desulfurizing tower main part 6 is through link 5 through connection, and the middle part of link 5 is link up and is fixed with draught fan 51, and draught fan 51 attracts the coal gas in hydrolysis cooling tower 1 in link 5, and the inside desulfurization that carries out of guide desulfurizing tower main part 6 is handled.
As shown in fig. 1-4, the first ring pipe 3 and the second ring pipe 9 have the same structure, the bottom end of the first ring pipe 3 is fixed with atomizing nozzles 31 in an annular array, and the inside of the atomizing nozzles 31 is communicated with the first ring pipe 3; the atomizing nozzle 31 is used for atomizing the solution, so that the hydrolysis cooling and desulfurization operation are convenient;
the conical side wall of the conical desulfurization cover 10 is provided with through holes 101 at equal intervals, and the bottom end of the conical desulfurization cover 10 is provided with a liquid outlet 102 in a penetrating way; the device is used for realizing the on-off and liquid outlet of coal gas;
a first water pump 4 is fixed on the outer side wall of the hydrolysis cooling tower 1, a first liquid pumping pipe 41 is fixed at the water pumping end of the first water pump 4 and penetrates through the hydrolysis cooling tower 1 to extend into the inner bottom end of the hydrolysis tank 2, and a first liquid outlet pipe 42 is fixed at the water outlet end of the first water pump 4 and penetrates through the hydrolysis cooling tower 1 to be communicated with the upper end of the first ring pipe 3; by the design of the first water pump 4, the organic sulfur hydrolysis catalyst liquid 21 in the hydrolysis tank 2 is extracted by the first liquid extraction pipe 41, injected into the first loop pipe 3 through the first liquid outlet pipe 42 and sprayed out through the atomizing nozzle 31 at the bottom end of the first loop pipe; the water-soluble organic sulfur hydrolysis reactor is contacted with coal gas in a hydrolysis cooling tower 1 to realize hydrolysis of organic sulfur and cooling use of the coal gas, the coal gas injected into a hydrolysis box 2 realizes preliminary hydrolysis reaction, and comprehensive atomization hydrolysis is realized by spraying of a first ring pipe 3;
a second water pump 8 is fixed on the outer side wall of the desulfurizing tower main body 6, a second liquid pumping pipe 81 is fixed at the water pumping end of the second water pump 8, penetrates through the desulfurizing tower main body 6 and extends into the bottom end of the desulfurizing box 7, and a second liquid outlet pipe 82 is fixed at the liquid outlet end of the second water pump 8, penetrates through the desulfurizing tower main body 6 and is in through connection with the two groups of second annular pipes 9; the complex iron catalytic liquid 71 in the desulfurization box 7 is extracted by a second liquid extraction pipe 81 through the driving of a second water pump 8, is output through a second liquid extraction pipe 82, is injected into two groups of second circular pipes 9, and is sprayed out through an atomizing nozzle 31 at the bottom end of the second circular pipes, the hydrolyzed coal gas is introduced from the top end of the desulfurization tower main body 6, and is partially blocked by a conical desulfurization cover 10, the flue gas flows out through a through hole 101 in the side wall of the conical desulfurization cover 10 after primary desulfurization, the complex iron catalytic liquid 71 sprayed out from the second circular pipe 9 at the upper part leaks out through a liquid outlet hole 102 and returns to the desulfurization box 7 for storage, the coal gas passing through the through hole 101 is atomized and sprayed again through the second circular pipe 9 at the lower part, the desulfurization operation is carried out again, the contact area and time of desulfurization are increased, and the desulfurization;
an air inlet pipe 22 is arranged on one side of the hydrolysis cooling tower 1, which is far away from the first water pump 4, in a penetrating manner, the air inlet pipe 22 is connected with the inside of the hydrolysis tank 2 in a penetrating manner, a coal gas outlet 61 is arranged on one side of the desulfurization tower main body 6, which is far away from the second water pump 8, in a penetrating manner, and the coal gas outlet 61 is positioned above the desulfurization tank 7; the gas inlet pipe 22 is used for introducing gas, and the gas outlet 61 is used for leading out purified gas.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a blast furnace gas desulfurizing tower, includes hydrolysis cooling tower (1), hydrolysis case (2), connecting pipe (5), desulfurizing tower main part (6) and desulfurizing box (7), its characterized in that: the utility model discloses a desulfurization tower, including hydrolysis cooling tower (1), bottom mounting has hydrolysis case (2) in hydrolysis cooling tower (1), organic sulfur hydrolysis catalyst liquid (21) are deposited to the inside of hydrolysis case (2), be fixed with first ring canal (3) on the inner wall on hydrolysis cooling tower (1) upper portion, bottom mounting in desulfurizing tower main part (6) has desulfurization case (7), complex iron catalytic liquid (71) are deposited to the inside of desulfurization case (7), the inboard at desulfurizing tower main part (6) middle part is fixed with toper desulfurization cover (10), all be fixed with second ring canal (9) on desulfurizing tower main part (6) inner wall of toper desulfurization cover (10) upper and lower side, the top of hydrolysis cooling tower (1) and desulfurizing tower main part (6) is through connection through connecting pipe (5), the middle part of connecting pipe (5) is link up and is fixed with draught fan (51).
2. The blast furnace gas desulfurization tower according to claim 1, wherein a first water pump (4) is fixed on the outer side wall of the hydrolysis cooling tower (1), a first liquid pumping pipe (41) is fixed on the water pumping end of the first water pump (4) and penetrates through the hydrolysis cooling tower (1) to extend into the inner bottom end of the hydrolysis tank (2), and a first liquid outlet pipe (42) is fixed on the water outlet end of the first water pump (4) and penetrates through the hydrolysis cooling tower (1) to be communicated with the upper end of the first circular pipe (3).
3. The blast furnace gas desulfurization tower according to claim 1, wherein a second water pump (8) is fixed on the outer side wall of the desulfurization tower main body (6), a second liquid pumping pipe (81) is fixed on the water pumping end of the second water pump (8) and penetrates through the desulfurization tower main body (6) to extend into the inner bottom end of the desulfurization tank (7), and a second liquid outlet pipe (82) is fixed on the liquid outlet end of the second water pump (8) and penetrates through the desulfurization tower main body (6) to be communicated with the two sets of second circular pipes (9).
4. The blast furnace gas desulfurization tower according to claim 1, wherein the first loop pipe (3) and the second loop pipe (9) have the same structure, the bottom end of the first loop pipe (3) is fixed with the atomizing nozzles (31) in an annular array, and the inside of the atomizing nozzles (31) is communicated with the first loop pipe (3).
5. The blast furnace gas desulfurization tower according to claim 1, wherein the tapered sidewall of the tapered desulfurization cover (10) is provided with through holes (101) at equal intervals, and the bottom end of the tapered desulfurization cover (10) is provided with a liquid outlet hole (102) in a penetrating manner.
6. The blast furnace gas desulfurization tower according to claim 1, wherein an air inlet pipe (22) is formed through one side of the hydrolysis cooling tower (1) far away from the first water pump (4), the air inlet pipe (22) is connected with the inside of the hydrolysis tank (2) in a penetrating manner, a gas outlet (61) is formed through one side of the desulfurization tower main body (6) far away from the second water pump (8), and the gas outlet (61) is positioned above the desulfurization tank (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021492183.0U CN212955026U (en) | 2020-07-24 | 2020-07-24 | Blast furnace gas desulfurizing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021492183.0U CN212955026U (en) | 2020-07-24 | 2020-07-24 | Blast furnace gas desulfurizing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212955026U true CN212955026U (en) | 2021-04-13 |
Family
ID=75395916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021492183.0U Expired - Fee Related CN212955026U (en) | 2020-07-24 | 2020-07-24 | Blast furnace gas desulfurizing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212955026U (en) |
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2020
- 2020-07-24 CN CN202021492183.0U patent/CN212955026U/en not_active Expired - Fee Related
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Granted publication date: 20210413 |