CN116407942A - Novel device and method for removing H2S from coalbed methane, natural gas and medical tail gas - Google Patents
Novel device and method for removing H2S from coalbed methane, natural gas and medical tail gas Download PDFInfo
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- CN116407942A CN116407942A CN202111648543.0A CN202111648543A CN116407942A CN 116407942 A CN116407942 A CN 116407942A CN 202111648543 A CN202111648543 A CN 202111648543A CN 116407942 A CN116407942 A CN 116407942A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000007789 gas Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000003345 natural gas Substances 0.000 title claims abstract description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 111
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 85
- 239000011593 sulfur Substances 0.000 claims abstract description 85
- 239000006260 foam Substances 0.000 claims abstract description 80
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 104
- 239000005864 Sulphur Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 6
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 230000008569 process Effects 0.000 description 8
- 238000006477 desulfuration reaction Methods 0.000 description 7
- 230000023556 desulfurization Effects 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
- B01D53/8612—Hydrogen sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
Abstract
The invention belongs to the technical field of environmental protection equipment, and particularly relates to a novel H2S removing device and method for coalbed methane, natural gas and medical tail gas, which comprises a base, wherein a steam-water separator, a reaction tower and a sulfur foam groove are arranged on the base, the reaction tower is positioned between the steam-water separator and the sulfur foam groove, the top end of the steam-water separator is fixedly connected with an air supply pipe, a vent pipe is arranged between the steam-water separator and the reaction tower, one end of the vent pipe is connected to the side surface of the steam-water separator, the other end of the vent pipe is connected to the top end of the reaction tower, the side surface of the reaction tower is connected with an air inlet pipe, a first conveying pipe is arranged between the reaction tower and the sulfur foam groove, one end of the first conveying pipe is connected to the bottom end of the reaction tower, the other end of the first conveying pipe is connected to the side surface of the sulfur foam groove, one side of the sulfur foam groove is connected with a vent pipe, and the vent pipe is connected with an oxidation fan.
Description
Technical Field
The invention belongs to the technical field of environmental protection equipment, and particularly relates to a novel device and a method for removing H2S from coalbed methane, natural gas and medical tail gas.
Background
The main components of natural gas, in addition to methane and water vapor, typically contain some acid gases, mainly H2S, CO2, COS mercaptans and sulfides, and the like. H2S can corrode pipelines and equipment, pollute the environment, poison catalysts and are unfavorable for downstream industrial production.
With the development of oil extraction operation, various oil and gas wells are accompanied by the generation of more and more petroleum associated gas during oil extraction, and the current way of treating the natural gas containing H2S gas is mainly to directly burn the natural gas to a torch, so that a large amount of air pollutants are generated, and the requirements of the nation on environmental protection and energy conservation are not met. The individual wells with high H2S concentration are removed by adopting a triazine reagent absorption method, and the method has the advantages of simple operation, 1 disadvantage, 2 high operation cost and easy pipeline blockage to influence normal production.
The process for treating H2S mainly adopts dry-method medicament absorption at present, and the method is characterized by no moving equipment and simple operation, but has the defects of 1, high operation cost of 2, 3 secondary pollution caused by the fact that the absorbed medicament becomes dangerous waste, and low use efficiency of only 50 percent.
Most of the tail gas in the medicine field contains H2S, and the tail gas is mainly removed by an alkaline absorption and dry method at present. The method has the characteristics of simplicity, convenience, 1 defect, high operation cost, 2 defect, low use rate and the like, and H2S gas can be formed again when meeting acid after the alkaline absorption, and the problems of reversible reaction 3, non-dischargeable generated wastewater, increased cost 4 of secondary treatment and the like exist.
Disclosure of Invention
The invention provides a novel device and a method for removing H2S from coalbed methane, natural gas and medical tail gas, which are used for solving the problems of high operation cost, secondary pollution and increased secondary treatment cost in the background technology.
The technical problems solved by the invention are realized by adopting the following technical scheme:
the utility model provides a novel coalbed methane, natural gas and medical tail gas remove H2S device, includes the base, be equipped with steam-water separator, reaction tower, sulphur foam groove on the base, the reaction tower is located steam-water separator the sulphur foam groove is between, steam-water separator top fixedly connected with air supply pipe, steam-water separator with be equipped with the breather pipe between the reaction tower, breather pipe one end is connected the side of steam-water separator, the other end of breather pipe is connected the top of reaction tower, the side of reaction tower is connected with the intake pipe, the reaction tower with be equipped with first conveyer pipe between the sulphur foam groove, first conveyer pipe one end is connected the bottom of reaction tower, the other end of first conveyer pipe is connected the side of sulphur foam groove, one side of sulphur foam groove is connected with the ventilation pipe, the ventilation pipe is connected with the oxidation fan, the oxidation fan sets up on the base.
The bottom in the sulfur foam groove is provided with a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate are vertically arranged in parallel, the top of the sulfur foam groove is provided with an air outlet, the side wall of the sulfur foam groove is provided with a plurality of lean liquid outlets, and the lean liquid outlets are positioned between the second baffle plate and the sulfur foam groove shell;
one side of the sulfur foam groove is connected with a conveying mechanism, and the conveying mechanism is positioned on the base.
Further, the conveying mechanism comprises a second conveying pipe, a first liquid pump and a third conveying pipe, one end of the second conveying pipe is connected with the sulfur foam groove, the other end of the second conveying pipe is connected with the first liquid pump, one end of the third conveying pipe is connected with the first liquid pump, and the other end of the third conveying pipe is connected with the reaction tower.
Further, a sulfur outlet is arranged at the bottom of the sulfur foam tank and is positioned between the first partition plate and the second partition plate.
Further, the side that the sulphur foam groove kept away from the third transfer line is provided with the second liquid pump, the second liquid pump is connected with the fourth conveyer pipe, the fourth conveyer pipe is connected with the plate and frame filter, the plate and frame filter is connected with the fifth conveyer pipe, the fifth conveyer pipe is connected with the reservoir, the reservoir is connected with the third liquid pump, the third liquid pump is connected with the sixth conveyer pipe, the other end of sixth conveyer pipe is connected on the lateral wall in sulphur foam groove.
Further, a control box is arranged on one side of the sulfur foam groove, and the control box is electrically connected with the first liquid pump, the second liquid pump and the third liquid pump.
A novel method for removing H2S from coalbed methane, natural gas and medical tail gas comprises the following steps:
the first step:
H2S-containing gas produced from oilfield associated gas, methane or coal bed gas passes through a reaction tower, the gas and a medicament in the reaction tower are fully mixed to remove 100% of H2S, and the treated gas enters an air supply pipeline after being dehumidified by a steam-water separator;
and a second step of:
the ferric iron of the solution in the reaction tower absorbs H2S to be changed into ferrous iron to be changed into rich solution and elemental sulfur is formed, the rich solution and the sulfur enter one side of a first baffle plate in a sulfur foam groove, the medicament is oxidized by air blown in by an oxidation fan, and ferrous iron in the rich solution is changed into lean solution of the ferric iron after the blown air is oxidized;
and a third step of:
sulfur foam in a groove at one side of the first baffle plate gradually overflows the height of the first baffle plate through accumulation and sedimentation, the liquid enters a groove between the first baffle plate and the second baffle plate, the height of the second baffle plate is lower than that of the first baffle plate, the sulfur foam naturally sinks to the bottom of the sulfur foam groove through the second baffle plate in the groove between the first baffle plate and the second baffle plate, when the sulfur content reaches a certain amount, the liquid gradually overflows the second baffle plate and enters the groove between the second baffle plate and the sulfur foam groove, and because the sulfur content in the liquid at different heights is different, clear liquid with different sulfur content can be conveniently extracted according to requirements through arranging three lean liquid outlets with different heights, and the clear liquid between the second baffle plate and the sulfur foam groove is pumped into a reaction tower again through a first liquid pump to remove H2S;
fourth step:
the sulfur precipitated at the bottom between the first separator and the second separator is pumped into the plate-and-frame filter for filtering through the second liquid pump, the filtered clear liquid is input into the liquid storage tank for storage, the clear liquid in the liquid storage tank is returned to the groove between the second separator and the sulfur foam groove through the third liquid pump, and the clear liquid returned to the sulfur foam groove is mixed with the clear liquid which is originally precipitated and filtered and is also re-pumped into the reaction tower through the first liquid pump for removing H2S.
The beneficial effects of the invention are as follows:
1. the complex iron catalyst has simple technical treatment process, and H2S can be rapidly oxidized into elemental sulfur by adopting a one-step treatment process; for H2S with various concentrations, the content of H2S after desulfurization can be lower than 10ppm, and the H2S removal efficiency is high.
2. The system has strong anti-wave capability. For the traditional desulfurization device, when the fluctuation of the H2S content in the raw material gas is large, the fluctuation of the H2S content of the outlet purified gas is large, and even exceeds the standard. The desulfurization device of the complex iron has the characteristic of high sulfur capacity, can fully and automatically treat the fluctuation condition, does not need to manually change operation and does not influence the desulfurization rate.
3. The operation cost is low. Because the complex iron catalyst in various agents used in the desulfurization process can be recycled and reused without side reactions, only a small amount of complex iron catalyst lost in the desulfurization process needs to be supplemented.
4. Solves the problem that the traditional complex iron process technology needs to carry out sulfur dehumidification operation every day, and reduces the labor intensity.
5. The problem that the automation cannot be realized due to the fact that the traditional process technology is operated by a person is solved, and the process technology can realize the full-automatic operation of the system.
6. The traditional complex iron cannot be safely stored after desulfurization, and the technology solves the problem of temporary storage of sulfur.
Drawings
FIG. 1 is a schematic diagram of a novel device for removing H2S from coal bed gas, natural gas and medical tail gas;
FIG. 2 is a top view of a novel apparatus for removing H2S from coalbed methane, natural gas and medical tail gas;
FIG. 3 is a schematic installation diagram of a first partition board and a second partition board in a sulfur foam tank of a novel coal bed gas, natural gas and medical tail gas H2S removal device;
fig. 4 is a right side view of a novel device for removing H2S from coal bed gas, natural gas and medical tail gas.
In the figure: 1. a base; 2. a reaction tower; 3. an air inlet pipe; 4. a vent pipe; 5. a steam-water separator; 6. an air supply pipe; 7. a sulfur foam tank; 8. a first delivery tube; 9. an oxidation blower; 10. a ventilation pipe; 11. a first separator; 12. an air outlet; 13. a second separator; 14. a lean liquid outlet; 15. a conveying mechanism; 16. a second delivery tube; 17. a first liquid pump; 18. a third delivery tube; 19. a sulfur outlet; 20. a second liquid pump; 21. a fourth conveying pipe; 22. a plate frame filter; 23. a fifth conveying pipe; 24. a liquid storage tank; 25. a third liquid pump; 26. a sixth conveying pipe; 27. and a control box.
Detailed Description
Embodiments of the present disclosure will be described below with reference to the accompanying drawings, but it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be construed to have meanings consistent with the context of the present specification and should not be construed in an idealized or overly formal manner.
Where expressions like at least one of "A, B and C, etc. are used, the expressions should generally be interpreted in accordance with the meaning as commonly understood by those skilled in the art (e.g.," a system having at least one of A, B and C "shall include, but not be limited to, a system having a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a novel coalbed methane, natural gas and medical tail gas take off H2S device, includes base 1, the fixed reaction tower 2 that is provided with in 1 top one end of base, the fixed intake pipe 3 that is provided with in 2 one side lower extreme of reaction tower, the fixed breather pipe 4 that is provided with in 2 top one end of base, the fixed vapour separator 5 that is provided with in 1 top one end of base, the one end and the vapour separator 5 one side upper end fixed connection of keeping away from 2 of breather pipe 4, the fixed air supply pipe 6 that is provided with in 5 top of vapour separator 5, the 1 top of base is provided with sulphur foam groove 7 in one side that 2 was kept away from in the reaction tower, the fixed first conveyer pipe 8 that is provided with in 2 bottom of reaction tower, the one end and the sulphur foam groove 7 one side lower extreme fixed connection of first conveyer pipe 8 keep away from 2, the fixed oxidation fan 9 one side of oxidation fan 9 is fixedly provided with ventilation pipe 10, the one end and the one side lower extreme fixed connection of sulphur foam groove 7 of keeping away from 9 of oxidation fan 10, the inside one side of sulphur foam groove 7 is fixedly provided with air supply pipe 6, the first side of keeping away from 7 is provided with a plurality of sulphur foam groove 7, the inside top of evenly is provided with a plurality of sulphur foam groove 7, the first separator 13 top 1 is provided with a plurality of sulphur foam groove 13, and a plurality of sulphur foam groove 13 top 1 are kept away from in one side 1 top 1 is provided with a sulphur foam groove 13.
The conveying mechanism 15 comprises a second conveying pipe 16, a first liquid pump 17 and a third conveying pipe 18, wherein one end of one side of the sulfur foam groove 7 is fixedly provided with the second conveying pipe 16 at one side of the lean solution outlet 14, the top of the base 1 is fixedly provided with the first liquid pump 17 at one end of the second conveying pipe 16, one side of the first liquid pump 17 is fixedly provided with the third conveying pipe 18, one end of the third conveying pipe 18 far away from the first liquid pump 17 is fixedly connected with the reaction tower 2, and clear liquid between the second separator 13 and the sulfur foam groove 7 is respectively re-driven into the reaction tower 2 through the second conveying pipe 16 and the third conveying pipe 18 by the first liquid pump 17 to remove H2S; a sulfur outlet 19 is arranged at the bottom end between the first partition plate 11 and the second partition plate 13 in the sulfur foam groove 7, and sulfur deposited at the bottom between the first partition plate 11 and the second partition plate 13 is discharged through the sulfur outlet 19; a second liquid pump 20 is arranged on one side of the sulfur foam groove 7 far away from the third conveying pipe 18 at one side of the sulfur outlet 19, a fourth conveying pipe 21 is fixedly arranged on one side of the second liquid pump 20, a plate frame filter 22 is arranged at one end of the fourth conveying pipe 21 at the top of the base 1, and precipitated sulfur is pumped out through the second liquid pump 20 and enters the plate frame filter 22 through the fourth conveying pipe 21 for filtering; a fifth conveying pipe 23 is fixedly arranged on one side of the plate-frame filter 22, a liquid storage tank 24 is fixedly arranged at one end, far away from the plate-frame filter 22, of the top of the base 1 at the fifth conveying pipe 23, and filtered clear liquid enters the liquid storage tank 24 for storage through the fifth conveying pipe 23; a third liquid pump 25 is arranged at one side of the liquid storage tank 24, which is close to the sulfur foam tank 7, a sixth conveying pipe 26 is fixedly arranged at one side of the third liquid pump 25, which is far away from the liquid storage tank 24, one end of the sixth conveying pipe 26, which is far away from the third liquid pump 25, is fixedly connected with the sulfur foam tank 7, clear liquid stored in the liquid storage tank 24 is pumped through the third liquid pump 25, and the pumped clear liquid flows back to a tank between the second partition plate 13 and the sulfur foam tank 7 in the sulfur foam tank 7 through the sixth conveying pipe 26; the sulfur foam groove 7 is provided with a control box 27 on one side far away from the second conveying pipe 16, the control box 27 is electrically connected with the first liquid pump 17, the second liquid pump 20 and the third liquid pump 25, and the operation of the first liquid pump 17, the second liquid pump 20 and the third liquid pump 25 is controlled through the control box 27.
A novel method for removing H2S from coalbed methane, natural gas and medical tail gas comprises the following steps:
the first step:
H2S-containing gas produced from oilfield associated gas, methane or coal bed gas passes through the reaction tower 2, the gas and the medicament are fully mixed in the reaction tower 2 to remove 100% of H2S, and the treated gas enters the gas supply pipe 6 after being dehumidified by the steam-water separator 5.
And a second step of:
the ferric iron in the solution in the reaction tower 2 absorbs H2S to be changed into ferrous iron to be changed into rich solution and elemental sulfur is formed, the rich solution and the sulfur enter one side of the first partition plate 11 in the sulfur foam groove 7, the medicament is oxidized by air blown in by the oxidation fan 9, and the ferrous iron in the rich solution is oxidized by the blown air to be changed into ferric iron lean solution.
And a third step of:
the sulfur foam in the groove on one side of the first baffle 11 is deposited through accumulation, liquid gradually overflows the height of the first baffle 11 and enters the groove between the first baffle 11 and the second baffle 13, the height of the second baffle 13 is lower than that of the first baffle 11, the sulfur foam naturally settles to the bottom of the sulfur foam groove 7 through the second baffle 13 in the groove between the first baffle 11 and the second baffle 13, when the sulfur content reaches a certain amount, the liquid gradually overflows the second baffle 13 and enters the groove between the second baffle 13 and the sulfur foam groove 7, and because the sulfur content in the liquid with different heights is different, clear liquid with different sulfur content can be conveniently extracted according to requirements through arranging three lean liquid outlets 14 with different heights, and the clear liquid between the second baffle 13 and the sulfur foam groove 7 is re-pumped into the reaction tower 2 through the first liquid pump 17 for removing H2S.
Fourth step:
the sulfur precipitated at the bottom between the first baffle 11 and the second baffle 13 is pumped into a plate-and-frame filter 22 through a second liquid pump 20 for filtering, the filtered clear liquid is input into a liquid storage tank 24 for storage, the clear liquid in the liquid storage tank 24 is then input back into the tank between the second baffle 13 and the sulfur foam tank 7 in the sulfur foam tank 7 through a third liquid pump 25, and the clear liquid input back into the sulfur foam tank 7 is mixed with the clear liquid which is originally precipitated and filtered and is also re-input into the reaction tower 2 through the first liquid pump 17 for removing H2S.
While the embodiments of the present invention have been described in detail, the above description is only for the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, but all equivalent changes and modifications within the scope of the present invention shall fall within the scope of the appended claims.
Claims (6)
1. Novel coalbed methane, natural gas and medical tail gas H2S removal device is characterized in that: the device comprises a base, wherein a steam-water separator, a reaction tower and a sulfur foam groove are arranged on the base, the reaction tower is positioned between the steam-water separator and the sulfur foam groove, an air supply pipe is fixedly connected to the top end of the steam-water separator, a vent pipe is arranged between the steam-water separator and the reaction tower, one end of the vent pipe is connected to the side surface of the steam-water separator, the other end of the vent pipe is connected to the top end of the reaction tower, an air inlet pipe is connected to the side surface of the reaction tower, a first conveying pipe is arranged between the reaction tower and the sulfur foam groove, one end of the first conveying pipe is connected to the bottom end of the reaction tower, the other end of the first conveying pipe is connected to the side surface of the sulfur foam groove, one side of the sulfur foam groove is connected with a vent pipe, and the vent pipe is connected with an oxidation fan;
the bottom in the sulfur foam groove is provided with a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate are vertically arranged in parallel, the top of the sulfur foam groove is provided with an air outlet, the side wall of the sulfur foam groove is provided with a plurality of lean liquid outlets, and the lean liquid outlets are positioned between the second baffle plate and the sulfur foam groove shell;
one side of the sulfur foam groove is connected with a conveying mechanism, and the conveying mechanism is positioned on the base.
2. The novel coalbed methane, natural gas and medical tail gas H2S removing device according to claim 1, which is characterized in that: the conveying mechanism comprises a second conveying pipe, a first liquid pump and a third conveying pipe, one end of the second conveying pipe is connected with the sulfur foam groove, the other end of the second conveying pipe is connected with the first liquid pump, one end of the third conveying pipe is connected with the first liquid pump, and the other end of the third conveying pipe is connected with the reaction tower.
3. The novel coalbed methane, natural gas and medical tail gas H2S removing device according to claim 1, which is characterized in that: the bottom of the sulfur foam tank is provided with a sulfur outlet, and the sulfur outlet is positioned between the first partition plate and the second partition plate.
4. The novel coalbed methane, natural gas and medical tail gas H2S removing device according to claim 2, which is characterized in that: the side that the sulphur foam groove kept away from the third transfer line is provided with the second liquid pump, the second liquid pump is connected with the fourth conveyer pipe, the fourth conveyer pipe is connected with the plate and frame filter, the plate and frame filter is connected with the fifth conveyer pipe, the fifth conveyer pipe is connected with the reservoir, the reservoir is connected with the third liquid pump, the third liquid pump is connected with the sixth conveyer pipe, the other end of sixth conveyer pipe is connected on the lateral wall in sulphur foam groove.
5. The novel coalbed methane, natural gas and medical tail gas H2S removing device according to claim 1, which is characterized in that: and one side of the sulfur foam groove is provided with a control box, and the control box is electrically connected with the first liquid pump, the second liquid pump and the third liquid pump.
6. A novel method for removing H2S from coalbed methane, natural gas and medical tail gas is characterized by comprising the following steps: the method comprises the following steps:
the first step:
H2S-containing gas produced from oilfield associated gas, methane or coal bed gas passes through a reaction tower, the gas and a medicament in the reaction tower are fully mixed to remove 100% of H2S, and the treated gas enters an air supply pipeline after being dehumidified by a steam-water separator;
and a second step of:
the ferric iron of the solution in the reaction tower absorbs H2S to be changed into ferrous iron to be changed into rich solution and elemental sulfur is formed, the rich solution and the sulfur enter one side of a first baffle plate in a sulfur foam groove, the medicament is oxidized by air blown in by an oxidation fan, and ferrous iron in the rich solution is changed into lean solution of the ferric iron after the blown air is oxidized;
and a third step of:
sulfur foam in a groove at one side of the first baffle plate gradually overflows the height of the first baffle plate through accumulation and sedimentation, the liquid enters a groove between the first baffle plate and the second baffle plate, the height of the second baffle plate is lower than that of the first baffle plate, the sulfur foam naturally sinks to the bottom of the sulfur foam groove through the second baffle plate in the groove between the first baffle plate and the second baffle plate, when the sulfur content reaches a certain amount, the liquid gradually overflows the second baffle plate and enters the groove between the second baffle plate and the sulfur foam groove, and because the sulfur content in the liquid at different heights is different, clear liquid with different sulfur content can be conveniently extracted according to requirements through arranging three lean liquid outlets with different heights, and the clear liquid between the second baffle plate and the sulfur foam groove is pumped into a reaction tower again through a first liquid pump to remove H2S;
fourth step:
the sulfur precipitated at the bottom between the first separator and the second separator is pumped into the plate-and-frame filter for filtering through the second liquid pump, the filtered clear liquid is input into the liquid storage tank for storage, the clear liquid in the liquid storage tank is returned to the groove between the second separator and the sulfur foam groove through the third liquid pump, and the clear liquid returned to the sulfur foam groove is mixed with the clear liquid which is originally precipitated and filtered and is also re-pumped into the reaction tower through the first liquid pump for removing H2S.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111648543.0A CN116407942A (en) | 2021-12-30 | 2021-12-30 | Novel device and method for removing H2S from coalbed methane, natural gas and medical tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111648543.0A CN116407942A (en) | 2021-12-30 | 2021-12-30 | Novel device and method for removing H2S from coalbed methane, natural gas and medical tail gas |
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