CN112175684A - Novel process technology for removing H2S from coal bed gas, natural gas and medical tail gas - Google Patents
Novel process technology for removing H2S from coal bed gas, natural gas and medical tail gas Download PDFInfo
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- CN112175684A CN112175684A CN201910584604.8A CN201910584604A CN112175684A CN 112175684 A CN112175684 A CN 112175684A CN 201910584604 A CN201910584604 A CN 201910584604A CN 112175684 A CN112175684 A CN 112175684A
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- 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
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- 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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
Abstract
The invention discloses a novel HS removing device for coal bed gas, natural gas and medical tail gas, which comprises a base, wherein a reaction tower is fixedly arranged at one end of the top of the base, a vent pipe is fixedly arranged at the lower end of one side of the reaction tower, a steam-water separator is fixedly arranged at one end, far away from the base, of the top of the base, a gas supply pipe is fixedly arranged at the lower end of one side, far away from the vent pipe, of the steam-water separator, a first conveying pipe is fixedly arranged at one side, far away from the vent pipe, of the reaction tower, a regeneration tower is fixedly arranged at one end, far away from the reaction tower, of the top of the base. According to the novel process technology for removing H2S from the coal bed gas, the natural gas and the medical tail gas, the complex iron catalyst is used, the process treatment process is simple, and the H2S can be quickly and directly oxidized into elemental sulfur by adopting a one-step treatment process; the content of desulfurized H2S of H2S with different concentrations can be lower than 10ppm, and the H2S removing efficiency is high.
Description
Technical Field
The invention relates to the technical field of H2S removing equipment, in particular to a novel process technology for removing H2S from coal bed gas, 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 thioethers, etc. H2S can corrode pipelines and equipment, pollute the environment, poison catalysts and be not beneficial to downstream industrial production.
With the development of oil production operation, each oil and gas well produces more and more oil associated gas during oil production, and the current way of processing the natural gas containing H2S gas is mainly directly to a torch for combustion, so that a large amount of air pollutants are generated, and the requirements of China on environmental protection and energy conservation are not met. Individual wells with high H2S concentration are removed by adopting a triazine medicament absorption method, and the method has the advantages of simple and convenient operation, 1 defect, high operation cost 2 and easy pipeline blockage to influence normal production.
A large amount of H2S exists in the coal bed gas production process, the process for treating H2S mainly adopts dry method medicament absorption at present, the method has the characteristics of no moving equipment and simple and convenient operation, but the defects are relatively obvious and mainly reflected in 1, high operation cost 2, secondary pollution 3 caused by the fact that the absorbed medicament is changed into dangerous waste, and low use efficiency of only 50%.
Most of tail gas in the field of medicine also contains H2S, and the tail gas is mainly removed by adopting an alkaline absorption method and a dry method at present. The method has the characteristics of simplicity, 1 defect and high operation cost; 2. H2S gas is formed again when meeting acid after the absorption by the alkali method, and a reversible reaction exists; 3. the generated wastewater is not discharged, so that the cost of secondary treatment is increased; 4. low material using rate and the like.
Disclosure of Invention
The invention aims to provide a novel H2S removing device for coal bed gas, natural gas and medical tail gas, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a novel HS removing device for coal bed gas, natural gas and medical tail gas comprises a base, wherein a reaction tower is fixedly arranged at one end of the top of the base, a vent pipe is fixedly arranged at the lower end of one side of the reaction tower, a steam-water separator is fixedly arranged at one end, far away from the base, of the vent pipe at the top of the base, an air supply pipe is fixedly arranged at the lower end of one side, far away from the vent pipe, of the steam-water separator, a first conveying pipe is fixedly arranged at one side, far away from the vent pipe, of the reaction tower, a regeneration tower is fixedly arranged at one end, far away from the reaction tower, of the top of the base, an oxidation fan is arranged at one side, far away from the first conveying pipe, of the regeneration tower is fixedly provided with a second conveying pipe, a sulfur foam groove is fixedly arranged at one end, far, the device comprises a base, a foam tank, a third conveying pipe, a valve, a liquid storage tank, a fixing pipe, an installation mechanism, a filtering mechanism and a conveying mechanism, wherein the third conveying pipe is fixedly arranged on one side of the foam tank, one end of the third conveying pipe, which is close to the foam tank, is fixedly provided with the valve, the liquid storage tank is fixedly arranged at the top of the base, which is far away from the end of the foam tank through the third conveying pipe, four sides inside the liquid storage tank are provided with the fixing pipes, the installation mechanism is arranged between the fixing pipes.
Preferably, the installation mechanism comprises a cover plate, an installation frame and clamping grooves, the cover plate is fixedly arranged at the top end inside the liquid storage tank, the installation frame is fixedly arranged at the bottom of the cover plate, and the clamping grooves are formed in the four sides of the installation frame on one side, far away from the sulfur foam tank, of the fixing pipe.
Preferably, the filtering mechanism comprises a first filter screen and a second filter screen, the first filter screen is fixedly arranged at the top end between the mounting frames, and the second filter screen is arranged below the first filter screen between the mounting frames.
Preferably, the conveying mechanism comprises a circulating pump, a fourth conveying pipe, a liquid pump and a fifth conveying pipe, the circulating pump is installed at the low end of one side of the liquid storage tank through a mounting seat, the fourth conveying pipe is arranged on one side of the circulating pump, one end, far away from the circulating pump, of the fourth conveying pipe is fixedly connected with the sulfur foam tank, the liquid pump is installed on one side of the sulfur foam tank through the mounting seat, the fifth conveying pipe is arranged on one side of the liquid pump, and one end, far away from the sulfur foam tank, of the fifth conveying pipe is fixedly connected with the.
Preferably, a supporting plate is fixedly arranged between one ends, far away from the cover plate, of the mounting frame.
Preferably, a rubber gasket is fixedly arranged on the outer side of the cover plate.
Preferably, a carrying handle is fixedly arranged at the top of the cover plate.
Preferably, a plurality of buckles are uniformly arranged on the top end of the liquid storage tank on the outer side of the cover plate.
Preferably, one side of the sulfur foam groove, which is far away from the second conveying pipe, is fixedly provided with a control box, and the control box is electrically connected with the circulating pump and the liquid pump.
A novel process technology for removing H2S from coal bed gas, natural gas and medical tail gas comprises the following steps:
the first step is as follows:
the gas containing HS produced from oilfield associated gas, methane or coal bed gas is fully mixed with a medicament in a reaction tower through the reaction tower to remove% of the HS, and the treated gas enters a gas supply pipeline after being dehumidified by a steam-water separator.
The second step is that:
absorbing the HS by ferric iron in the solution in the reaction tower to become ferrous iron and become pregnant solution and form elemental sulfur, feeding the pregnant solution and the sulfur into a regeneration tower, and oxidizing the medicament in the regeneration tower with air blown by an oxidation fan. The ferrous iron in the rich solution is oxidized by blown air to become a ferric iron barren solution.
The sulfur foam of the regeneration tower enters the sulfur foam tank again, naturally sinks to the bottom of the sulfur foam tank through the partition plate in the sulfur foam tank, when the sulfur content reaches a certain amount, the valve is opened to directly introduce the solution of the sulfur foam tank into a liquid storage tank below, and clear liquid formed after layered filtration in the liquid storage tank is pumped into the sulfur foam tank through the circulating pump. And pumping the clear liquid in the sulfur foam tank into a reaction tower through a liquid pump to remove HS.
Compared with the prior art, the invention has the beneficial effects that:
1. the iron catalyst is complexed, the process treatment process is simple, and the H2S can be directly oxidized into elemental sulfur by adopting a one-step treatment process; the content of desulfurized H2S of H2S with different concentrations can be lower than 10ppm, and the H2S removing efficiency is high.
2. The anti-fluctuation capability of the system is strong. For the traditional desulphurization device, when the content of H2S in the feed gas fluctuates greatly, the content of H2S in the purified gas at the outlet fluctuates greatly and even exceeds the standard. The complex iron has high sulfur capacity, and the desulfurizing device can completely automatically process the fluctuation without manually changing the operation and influencing the desulfurizing rate.
3. The operation cost is low. Because the complex iron catalyst in various agents used in the desulfurization process can be regenerated and recycled and no side reaction occurs, 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 technology needs sulfur dehumidification operation every day, and reduces the labor intensity.
5. The problem that automation cannot be realized due to the fact that manual operation is required in the traditional process technology is solved, and the process technology can realize full-automatic operation of a system.
6. The traditional complex iron cannot be safely stored after being desulfurized, and the process technology solves the problem of temporary storage of sulfur.
Drawings
FIG. 1 is a schematic view of a novel device for removing H2S from coal bed gas, natural gas and medical tail gas according to the invention;
FIG. 2 is a side view of a novel device for removing H2S from coal bed gas, natural gas and medical tail gas according to the invention;
FIG. 3 is an installation schematic diagram of a novel coal bed methane, natural gas and medical tail gas H2S removing device for a sulfur foam tank and a liquid storage tank according to the invention;
FIG. 4 is an installation diagram of a liquid storage tank and a mounting rack of the novel coal bed methane, natural gas and medical tail gas H2 removal 2S device;
fig. 5 is an enlarged schematic view of a portion a in fig. 3 of the novel coal bed methane, natural gas and medical tail gas H2S removing device according to the invention.
In the figure: 1. a base; 2. a reaction tower; 3. a breather pipe; 4. a steam-water separator; 5. a gas supply pipe; 6. a first delivery pipe; 7. a regeneration tower; 8. a second delivery pipe; 9. a sulfur foam groove; 10. a partition plate; 11. a third delivery pipe; 12. a valve; 13. a liquid storage tank; 14. a fixed tube; 15. an installation mechanism; 16. a filtering mechanism; 17. a conveying mechanism; 18. a cover plate; 19. a mounting frame; 20. a card slot; 21. a first filter screen; 22. a second filter screen; 23. a circulation pump; 24. a fourth delivery pipe; 25. a liquid pump; 26. a fifth delivery pipe; 27. a support plate; 28. a rubber gasket; 29. a carrying handle; 30. buckling; 31. a control box; 32. an oxidation fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a novel H2S removing device for coal bed gas, natural gas and medical tail gas comprises a base 1, wherein one end of the top of the base 1 is fixedly provided with a reaction tower 2, the lower end of one side of the reaction tower 2 is fixedly provided with a vent pipe 3, one end of the top of the base 1, which is far away from the base 1, of the vent pipe 3 is fixedly provided with a steam-water separator 4, the lower end of one side of the steam-water separator 4, which is far away from the vent pipe 3, is fixedly provided with an air supply pipe 5, one side of the reaction tower 2, which is far away from the vent pipe 3, is fixedly provided with a first conveying pipe 6, the end of the top of the base 1, which is far away from the reaction tower 2, is fixedly provided with a regeneration tower 7, the top of the base 1 is provided with an oxidation fan 32, one side of the regeneration tower 7, which is far away from the first conveying pipe 6, is, the inside bottom mounting of froth tank 9 is provided with baffle 10, the fixed third conveyer pipe 11 that is provided with in froth tank 9 one side, the fixed valve 12 that is provided with of one end that is close to froth tank 9 of third conveyer pipe 11, the fixed reservoir 13 that is provided with in one end that the froth tank 9 was kept away from at third conveyer pipe 11 in base 1 top, four sides all are provided with fixed pipe 14 in reservoir 13 inside, be provided with installation mechanism 15 between the fixed pipe 14, reservoir 13 is inside to be provided with filter equipment 16 at installation mechanism 15 inboard, reservoir 13 one side low side and froth tank 9 one side are provided with conveying mechanism 17.
The mounting mechanism 15 comprises a cover plate 18, a mounting frame 19 and clamping grooves 20, the cover plate 18 is fixedly arranged at the top end inside the liquid storage tank 13, the mounting frame 19 is fixedly arranged at the bottom of the cover plate 18, the clamping grooves 20 are respectively formed in the four sides of the mounting frame 19 on one side, away from the sulfur foam tank 9, of the fixed pipe 14, sealing in the liquid storage tank 13 is guaranteed through the cover plate 18, the placing stability of the mounting frame 19 in the liquid storage tank 13 is guaranteed through the clamping grooves 20 and the fixed pipe 14, and the mounting frame 19 is used for mounting a first filter screen 21 and a second; the filtering mechanism 16 comprises a first filter screen 21 and a second filter screen 22, the first filter screen 21 is fixedly arranged at the top end between the mounting frames 19, the second filter screen 22 is arranged below the first filter screen 21 between the mounting frames 19, and the first filter screen 21 and the second filter screen 22 are arranged to complete layered filtering of the solution; the conveying mechanism 17 comprises a circulating pump 23, a fourth conveying pipe 24, a liquid pump 25 and a fifth conveying pipe 26, the circulating pump 23 is installed at the lower end of one side of the liquid storage tank 13 through a mounting seat, the fourth conveying pipe 24 is arranged at one side of the circulating pump 23, one end, far away from the circulating pump 23, of the fourth conveying pipe 24 is fixedly connected with the sulfur foam tank 9, the liquid pump 25 is installed at one side of the sulfur foam tank 9 through the mounting seat, the fifth conveying pipe 26 is arranged at one side of the liquid pump 25, one end, far away from the sulfur foam tank 9, of the fifth conveying pipe 26 is fixedly connected with the reaction tower 2, clear liquid is conveyed back to the sulfur foam tank 9 through the circulating pump 23 and the fourth conveying pipe 24, and then the clear liquid is conveyed back to the reaction tower 2 through the liquid; a supporting plate 27 is fixedly arranged between one ends of the mounting frames 19 far away from the cover plate 18; the supporting plate 27 is used for supporting the mounting frame 19 and ensuring the rigid structure of the mounting frame 19; a rubber sealing gasket 28 is fixedly arranged on the outer side of the cover plate 18, and the sealing inside the liquid storage tank 13 is ensured through the rubber sealing gasket 28; a carrying handle 29 is fixedly arranged at the top of the cover plate 18, and the carrying handle 29 is arranged to facilitate a worker to carry the cover plate 18, so that the first filter screen 21 and the second filter screen 22 can be cleaned or replaced; a plurality of buckles 30 are uniformly arranged at the top end of the liquid storage tank 13 on the outer side of the cover plate 18, and the fixed cover plate 18 is clamped through the buckles 30; and a control box 31 is fixedly arranged on one side of the sulfur foam tank 9, which is far away from the second conveying pipe 8, the control box 31 is electrically connected with the circulating pump 23 and the liquid pump 25, and the control box 31 is used for controlling the operation of the residual liquid pump 25 of the circulating pump 23.
A novel process technology for removing H2S from coal bed gas, natural gas and medical tail gas comprises the following steps:
the first step is as follows:
gas containing H2S produced from oilfield associated gas, biogas or coal bed gas is fully mixed with medicament in a reaction tower 2 through the reaction tower 2 to remove 100% of H2S, and the treated gas enters a gas supply pipe 5 after being dehumidified by a steam-water separator 4.
The second step is that:
ferric iron in the solution in the reaction tower 2 absorbs H2S to become ferrous iron and become pregnant solution and form elemental sulfur, the pregnant solution and the sulfur enter a regeneration tower 7, and the medicament in the regeneration tower 7 is oxidized with air blown by an oxidation fan 32. The ferrous iron in the rich solution is oxidized by blown air to become a ferric iron barren solution.
The sulfur foam of the regeneration tower 7 enters the sulfur foam tank 9 again, naturally sinks to the bottom of the sulfur foam tank 9 through the partition board 10 in the sulfur foam tank 9, when the sulfur content reaches a certain amount, the valve 12 is opened to directly introduce the solution of the sulfur foam tank 9 into the liquid storage tank 13 below, and the clear liquid formed after the layered filtration in the liquid storage tank 13 is pumped into the sulfur foam tank 9 through the circulating pump 23. The clear liquid in the froth tank 9 is pumped into the reaction tower 2 by the liquid pump 25 to remove H2S.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a novel coal bed gas, natural gas and medical tail gas take off H2S device, includes base (1), its characterized in that: the reaction tower (2) is fixedly arranged at one end of the top of the base (1), a vent pipe (3) is fixedly arranged at the lower end of one side of the reaction tower (2), a steam-water separator (4) is fixedly arranged at one end, far away from the base (1), of the vent pipe (3) at the top of the base (1), a gas supply pipe (5) is fixedly arranged at the lower end of one side, far away from the vent pipe (3), of the steam-water separator (4), a first conveying pipe (6) is fixedly arranged at one side, far away from the vent pipe (3), of the reaction tower (2), a regeneration tower (7) is fixedly arranged at one end, far away from the reaction tower (2), of the first conveying pipe (6), an oxidation fan (32) is arranged at one side, far away from the first conveying pipe (6), of the top of the base (1), and a second conveying pipe (8) is, a sulfur foam groove (9) is fixedly arranged at one end of the top of the base (1) far away from the regeneration tower (7) on the second conveying pipe (8), a clapboard (10) is fixedly arranged at the bottom end in the sulfur foam groove (9), a third conveying pipe (11) is fixedly arranged at one side of the sulfur foam groove (9), a valve (12) is fixedly arranged at one end of the third delivery pipe (11) close to the sulfur foam groove (9), a liquid storage tank (13) is fixedly arranged at one end of the top of the base (1) far away from the sulfur foam tank (9) on the third conveying pipe (11), four sides inside the liquid storage tank (13) are provided with fixed pipes (14), an installation mechanism (15) is arranged between the fixed pipes (14), a filtering mechanism (16) is arranged inside the liquid storage tank (13) and inside the mounting mechanism (15), and a conveying mechanism (17) is arranged at the lower end of one side of the liquid storage tank (13) and one side of the sulfur foam tank (9).
2. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 1, characterized in that: the installation mechanism (15) comprises a cover plate (18), a mounting frame (19) and clamping grooves (20), the cover plate (18) is fixedly arranged at the top end inside the liquid storage tank (13), the mounting frame (19) is fixedly arranged at the bottom of the cover plate (18), and the clamping grooves (20) are formed in the four sides of the mounting frame (19) on one side, far away from the sulfur foam tank (9), of the fixing pipe (14).
3. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 1, characterized in that: the filter mechanism (16) comprises a first filter screen (21) and a second filter screen (22), the first filter screen (21) is fixedly arranged on the top end between the mounting frames (19), and the second filter screen (22) is arranged below the first filter screen (21) between the mounting frames (19).
4. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 1, characterized in that: conveying mechanism (17) are including circulating pump (23), fourth conveyer pipe (24), liquid pump (25) and fifth conveyer pipe (26), circulating pump (23) are installed through the mount pad to reservoir (13) one side low end, circulating pump (23) one side is provided with fourth conveyer pipe (24), circulating pump (23) one end and sulfur foam groove (9) fixed connection are kept away from in fourth conveyer pipe (24), liquid pump (25) are installed through the mount pad to sulfur foam groove (9) one side, liquid pump (25) one side is provided with fifth conveyer pipe (26), the one end and reaction tower (2) fixed connection of sulfur foam groove (9) are kept away from in fifth conveyer pipe (26).
5. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 2, characterized in that: a supporting plate (27) is fixedly arranged between one ends, far away from the cover plate (18), of the mounting frames (19).
6. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 2, characterized in that: and a rubber sealing gasket (28) is fixedly arranged on the outer side of the cover plate (18).
7. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 2, characterized in that: a hand-held handle (29) is fixedly arranged at the top of the cover plate (18).
8. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 2, characterized in that: the top end of the liquid storage tank (13) is evenly provided with a plurality of buckles (30) on the outer side of the cover plate (18).
9. The novel coal bed gas, natural gas and medical tail gas H2S removing device according to claim 3, wherein: and a control box (31) is fixedly arranged on one side, away from the second conveying pipe (8), of the sulfur foam groove (9), and the control box (31) is electrically connected with the circulating pump (23) and the liquid pump (25).
10. A novel process technology for removing H2S from coal bed gas, natural gas and medical tail gas is characterized by comprising the following steps:
the first step is as follows:
gas containing H2S produced from oilfield associated gas, biogas or coal bed gas is fully mixed with a medicament in a reaction tower (2) through the reaction tower (2) to remove 100% of H2S, and the treated gas enters a gas supply pipe (5) line after being dehumidified by a steam-water separator (4);
the second step is that:
ferric iron in the solution in the reaction tower (2) absorbs H2S to become ferrous iron and become pregnant solution and form elemental sulfur, the pregnant solution and the sulfur enter a regeneration tower (7), and the medicament in the regeneration tower (7) is oxidized with the air blown by an oxidation fan (32);
oxidizing bivalent iron in the rich solution into a trivalent iron barren solution through blown air;
the sulfur foam of the regeneration tower (7) enters a sulfur foam tank (9) again, naturally settles to the bottom of the sulfur foam tank (9) through a partition plate (10) in the sulfur foam tank (9), when the sulfur content reaches a certain amount, a valve (12) is opened to directly introduce the solution of the sulfur foam tank (9) into a liquid storage tank (13) below, and clear liquid formed after layered filtration in the liquid storage tank (13) is pumped into the sulfur foam tank (9) through a circulating pump (23);
the clear liquid in the froth tank (9) is pumped into the reaction tower (2) by a liquid pump (25) to remove H2S.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11629571B1 (en) | 2022-12-05 | 2023-04-18 | Capwell Seavices Llc | Modular well capping system, kit, and methods |
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| US11629571B1 (en) | 2022-12-05 | 2023-04-18 | Capwell Seavices Llc | Modular well capping system, kit, and methods |
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