Hydrogen sulfide removal device

Abstract

The utility model provides a hydrogen sulfide removal device which comprises an absorption tower, the absorption tower is connected with an absorption tower feeding pipeline, the absorption tower is connected with an oxidation tower through an absorption tower kettle pipeline, an air pipeline is arranged on the oxidation tower, and a dosing pipeline is arranged on the oxidation tower or the absorption tower kettle pipeline. One side of the oxidation tower is connected with the middle upper part of the absorption tower through a regeneration circulation pipeline; a sulfur extraction pipeline is arranged at the bottom of the oxidation tower; the method has the advantages of being high in hydrogen sulfide removal rate, wide in application range, high in operation flexibility, mild in reaction condition, simple in process, high in economic performance, high in safety performance, reliable in operation and the like.

Description

Technical Field

[0001] This application relates to the field of desulfurization technology, specifically to a hydrogen sulfide removal device. Background Technology

[0002] H2S in industrial raw materials and waste gases can cause equipment corrosion and catalyst poisoning, leading to increased production costs and decreased product quality. If released into the atmosphere without treatment, it will cause serious environmental problems and directly threaten human survival and development.

[0003] Currently, there are many methods for removing H2S both domestically and internationally, mainly divided into dry methods and wet methods:

[0004] The main advantages of dry methods are high removal efficiency and stable operation, making them suitable for low-concentration H2S gas; however, they also have disadvantages such as low sulfur capacity, difficulty in absorbent regeneration, high operating costs, and the inability to commercialize the products.

[0005] Wet processes use a solvent to contact the waste gas countercurrently, causing H2S to dissolve in the liquid phase and react with the absorbent to remove H2S. This method is suitable for gases with high flow rates and high H2S content. Liquid-phase catalytic oxidation is the most widely used wet process. It involves absorbing acidic H2S from the gas using a neutral, weakly alkaline, or acidic solution containing an oxidant. The absorbent oxidizes sulfide to elemental sulfur, thus recovering the sulfur. The absorbent can be recycled by absorbing air. Representative applications of liquid-phase catalytic oxidation include arsenic-based, vanadium-based, and iron-based processes, as well as some emerging technologies. However, it has disadvantages such as high initial investment, large size, large footprint, complex process flow, low desulfurizer utilization, high thiosulfate production, and the need for periodic emissions.

[0006] This application aims to improve the hydrogen sulfide removal rate through a hydrogen sulfide absorption section and a catalyst regeneration section, thereby ensuring its economic efficiency. The applicant has searched and found the closest prior art as follows:

[0007] Application number CN202321882456.6 discloses a biogas hydrogen sulfide removal device, which includes a filter. One side of the filter is connected to a biogas inlet, and the other side is connected to an inlet pipe. One end of the inlet pipe is connected to an inlet, which is fixed to the outer wall of a desulfurization tower. A water inlet is fixed on the upper part of the outer wall of the desulfurization tower, and one end of the water inlet is connected to a spray pipe. The improved biogas hydrogen sulfide removal device, by setting up a reaction tank containing sulfur-eating microorganisms, converts H2S into elemental sulfur or sulfate through absorption by the sulfur-eating bacteria, thereby entering the liquid phase to achieve hydrogen sulfide removal, which is safer and more reliable. The circulating liquid containing elemental sulfur is repeatedly precipitated in a sedimentation tank, so that the elemental sulfur produced by the sulfur-eating bacteria is separated from the circulating liquid through the precipitation process. Because the sulfur precipitate produced by the sulfur-eating bacteria has a smaller particle size, even if a small amount is brought into the tower, it will not clog the desulfurization tower and other equipment. This application does not involve the technical solution for catalyst regeneration.

[0008] In summary, a new technical solution is needed to address the aforementioned technical problems. Utility Model Content

[0009] This application provides a hydrogen sulfide removal device, including an absorption tower connected to an absorption tower feed pipeline, the absorption tower being connected to an oxidation tower via an absorption tower bottom pipeline, an air pipeline and a chemical dosing pipeline on the oxidation tower, or a chemical dosing pipeline on the absorption tower bottom pipeline, one side of the oxidation tower being connected to the upper middle part of the absorption tower via a regeneration circulation pipeline, and a sulfur extraction pipeline at the bottom of the oxidation tower.

[0010] As a preferred embodiment, the sulfur extraction pipeline is connected to a vacuum filter.

[0011] As a preferred embodiment, the vacuum filter is connected to the recovery solution circulation pipeline, which is connected to the upper middle part of the oxidation tower.

[0012] As a preferred embodiment, the feed pipeline of the absorption tower is connected to an acid separation tank, a feed pipeline is provided on one side of the acid separation tank, and an acid recovery pipeline is provided at the bottom of the acid separation tank.

[0013] As a preferred embodiment, the absorption tower includes a water washing tower, a first spray tower connected in series at the lower part of the water washing tower, a second spray tower connected in series at the lower part of the first spray tower, and an absorption tower bottom pipeline at the bottom of the second spray tower.

[0014] As a preferred embodiment, the water washing tower is provided with a water inlet on one side, and the bottom of the water washing tower is provided with an aqueous solution collection pipeline.

[0015] As a preferred embodiment, the aqueous solution collection pipeline includes a first water washing tower circulation pipeline, which is connected to a filter. The output end of the filter is connected to a second water washing tower circulation pipeline, which is connected to the upper middle part of the water washing tower.

[0016] As a preferred embodiment, a drainage pipeline is connected to the second circulation pipeline of the water washing tower.

[0017] As a preferred embodiment, the feed pipeline of the absorption tower is connected to the lower middle part of the second spray tower, the second spray tower is connected to the oxidation tower, and one side of the oxidation tower is connected to the first spray tower and the second spray tower respectively through a regeneration circulation pipeline.

[0018] This application has the following advantages:

[0019] 1. High hydrogen sulfide removal rate, with a removal rate of over 99.99% in one-step reaction, and the H2S concentration in the treated tail gas can be controlled below 10 ppm;

[0020] 2. It has a wide range of applications and can handle various gases containing H2S with high selectivity;

[0021] 3. It has high operational flexibility and can adapt to large fluctuations in the H2S concentration and flow rate of the feed gas from 0 to 100%.

[0022] 4. Environmentally friendly, with no waste generated;

[0023] 5. The reaction conditions are mild, and it is a liquid-phase, room temperature and pressure reaction process;

[0024] 6. The process is simple, and start-up, shutdown, and daily operation are all easy;

[0025] 7. High economic performance, small footprint, low investment cost, and low daily operating cost;

[0026] 8. High safety performance; the system does not use any toxic chemicals, and there is no H2S gas in the sulfur products.

[0027] 9. Reliable operation: The unique design ensures that there is no blockage and guarantees stable operation over a long period of time. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application;

[0029] Figure 2 This is a schematic diagram of the absorption tower according to Embodiment 1 of this application;

[0030] 1. Absorption tower; 2. Acid separation tank; 3. Feed pipeline; 4. Acid recovery pipeline; 5. Absorption tower bottom pipeline; 6. Oxidation tower; 7. Absorbent return pump; 8. Regeneration circulation pipeline; 9. Solution circulation pump; 10. Gas extraction pipeline; 11. Sulfur extraction pipeline; 12. Recovery solution circulation pipeline; 13. Sulfur slurry pump; 14. Solution recovery pump; 15. Vacuum filter; 16. Dosing pipeline; 17. Air compressor; 18. Sulfur product; 19. Water washing tower; 20. Spray tower one; 21. Spray tower two; 22. Water inlet; 23. Water washing tower circulation pipeline one; 24. Filter; 25. Water washing tower circulation pump; 26. Water washing tower circulation pipeline two; 27. Drainage pipeline; 28. Conical bottom; 29. ​​Air pipeline; 30. Absorption tower feed pipeline. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 Appendix Figure 2 The specific embodiments of this utility model will be described in detail below. It should be noted that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model. Example 1

[0032] This application provides a hydrogen sulfide removal device, including an absorption tower 1. An absorption tower feed line 30 is connected to the lower side of the absorption tower 1 for feeding hydrogen sulfide-containing gas into the absorption tower 1 through the feed line 30. Preferably, the absorption tower feed line 30 is connected to an acid separation tank 2. An feed line 3 is provided on one side of the acid separation tank 2, through which the hydrogen sulfide-containing gas enters the acid separation tank 2, and then through the absorption tower feed line 30 into the absorption tower 1. An acid recovery line 4 is provided at the bottom of the acid separation tank 2 for hydrogen sulfide gas recovery. Some solid impurities or droplets carried in the gas will settle or adhere to the tank wall and internal components after entering the acid separator 2 due to the decrease in gas flow velocity and the change in airflow direction, thereby achieving a certain degree of impurity removal and initial purification of hydrogen sulfide gas. The bottom of the absorption tower 1 is connected to the oxidation tower 6 through the absorption tower bottom pipeline 5. The absorption tower bottom pipeline 5 is equipped with an absorbent return pump 7. One side of the oxidation tower 6 is connected to the middle and upper part of the absorption tower 1 through a regeneration circulation pipeline 8. The regeneration circulation pipeline 8 is equipped with a solution circulation pump 9. The absorption tower 1 removes H2S The sulfur-containing gas is separated and converted into elemental sulfur. Oxidation tower 6 can restore the iron oxide catalyst. Desulfurization and regeneration are carried out in absorption tower 1 and oxidation tower 6 respectively. A gas extraction pipeline 10 is installed at the top of absorption tower 1, and a sulfur extraction pipeline 11 is installed at the bottom of oxidation tower 6. To facilitate sulfur recovery, the sulfur extraction pipeline 11 is connected to a vacuum filter 15. After filtration by the vacuum filter 15, sulfur product 18 is obtained. More preferably, the liquid phase obtained from the vacuum filter 15 enters oxidation tower 6 for recycling. Specifically, the vacuum filter 15 is connected to a recovery solution circulation pipeline 12, which is connected to the upper middle part of oxidation tower 6. The sulfur extraction pipeline... A sulfur slurry pump 13 is installed on the oxidation tower 11, and a solution recovery pump 14 is installed on the recovery solution circulation pipeline 12. An air pipeline 29 is connected to the oxidation tower 6, which is used to blow air into the solution in the oxidation tower 6. Ferrous ions Fe²⁺ react with oxygen O2 in the air and are re-oxidized to ferric ions Fe³⁺. A dosing pipeline 16 is connected to the oxidation tower 6, or a dosing pipeline 16 is connected to the bottom pipeline 5 of the absorption tower. The dosing pipeline 16 is used to add catalysts, reagents, etc. In this embodiment, the catalysts and reagents include, but are not limited to, chelating iron ion catalyst (XR-SR1), chelating agent (XR-SR2), surfactant (XR-SR6), 45% KOH, etc. Bactericide (XR-SR3) and stabilizer (XR-SR5), wherein XR-SR1, XR-SR2, XR-SR6 and 45% KOH are added to oxidation tower 6 through dosing pipeline 16, and others can be added manually at regular intervals. Preferably, in order to ensure more accurate addition of the agents, the dosing pipeline 16 is equipped with a metering pump.Among them, the chelated iron ion catalyst (XR-SR1) is a complex containing iron ions, similar to a cage-like chemical. To reduce catalyst loss, the designed operable amount of the chelated iron ion catalyst in the system is 330–3000 ppm; the chelating agent solution (XR-SR2) ensures that the iron ions in the solution remain in an ionic state over a wide pH range; the bactericide (XR-SR3): excessive biological activity (bacteria) will reduce the reaction effect of the catalyst. Adding a small amount of bactericide to the solution can reduce biological activity and inhibit bacterial growth; the surfactant (XR- SR6): Sulfur particles sometimes adhere to microbubbles, are sometimes encapsulated by hydrocarbons, or the circulating solution contains other organic matter or oil. These situations make it difficult for sulfur to settle, requiring an increase in the amount of surfactant; defoamer is used when the system produces foam; excessive addition of XR-SR6 and XR-SR3, and the presence of organic matter in the acid gas, can all cause foam generation; stabilizer (XR-SR5) is a thiosulfate stabilizer used to prevent degradation of the chelating agent. XR-SR5 only needs to be added during the initial trial run of the system; 45wt% potassium hydroxide is used to control the pH value of the circulating solution.

[0033] This embodiment uses the removal of hydrogen sulfide from biogas as an example. The biogas first passes through acid separator 2 in the boundary zone, then enters absorber 1. Inside absorber 1, the mixed gas comes into counter-current contact with an iron ion solution (a chelating agent solution) sprayed from the top of absorber 1. Hydrogen sulfide is converted into elemental sulfur, and absorber 1 removes entrained droplets and sulfur. The purified biogas is then extracted through gas extraction pipeline 10 and enters a purified gas separator, awaiting entry into subsequent systems. The rich liquid in absorber 1 is sent to oxidation tower 6 via absorbent return pump 7. Oxidation tower 6 is equipped with a jet pump, and the flow rate from the jet pump outlet enters the oxygen... At the top of the oxidation tower 6, air from the blower or air compressor 17 is evenly distributed in the oxidation tower 6 area through a distributor for catalyst regeneration. The regenerated solution is pumped into the absorption tower 1 by the solution circulation pump 9 for recycling and continued absorption of hydrogen sulfide. Preferably, to ensure the normal operation of the device, there are three absorption liquid return pumps 7 and three solution circulation pumps 9. The three absorption liquid return pumps 7 are connected in parallel, and the three solution circulation pumps 9 are connected in parallel. Of the three absorption liquid return pumps 7, one is in normal use and the other two are standby pumps. The solution circulation pumps 9 are the same as the absorption liquid return pumps 7, one is in normal use and the other two are standby pumps.

[0034] Solid sulfur is enriched in oxidation tower 6 and settles into sulfur slurry with a solid content of 5-15 wt% at the bottom 28 of the cone of oxidation tower 6. Preferably, the bottom 28 of the cone has a series of air purging rings with nozzles all over it. Compressed air is used to purge the bottom 28 of the cone at regular intervals to prevent sulfur from adhering. The sulfur slurry with a high concentration of sulfur is sent to vacuum filter 15 through sulfur slurry pump 13. In this embodiment, vacuum filter 15 adopts a plate and frame filter press in the prior art. After filtration, sulfur product 18 is obtained. The filtrate flows back into oxidation tower 6 by gravity through recovery solution circulation pipeline 12.

[0035] To reduce the overall cost of the equipment, a self-circulating system can be used when treating ammonium acid gas and other non-flammable low-pressure gases. The absorption tower 1 and oxidation tower 6 of this embodiment can be integrated into one device, thereby reducing one container and eliminating the need for solution circulation pumps and related pipelines. Example 3

[0036] This embodiment provides a detailed description of the absorption tower 1 from Embodiment 1, specifically:

[0037] The absorption tower 1 includes a water washing tower 19. A spray tower 20 is connected in series at the lower part of the water washing tower 19, and a spray tower 21 is connected in series at the lower part of the spray tower 20. The two spray towers (spray tower 20 and spray tower 21) and one water washing tower 19 are converted into one absorption tower 1 to reduce costs.

[0038] The water washing tower 19 is equipped with an inlet 22, and an aqueous solution collection pipeline is connected to the bottom of the water washing tower 19 to collect the used aqueous solution. More preferably, the used aqueous solution is recycled. Specifically, the aqueous solution collection pipeline includes a first water washing tower circulation pipeline 23, which is connected to the inlet of the filter 24. A water washing tower circulation pump 25 is installed on the first water washing tower circulation pipeline 23, and the outlet of the filter 24 is connected to a second water washing tower circulation pipeline 26, which is connected to the upper middle part of the water washing tower 19. A drain pipeline 27 is also connected to the second water washing tower circulation pipeline 26. Water quality monitoring is installed on the second water washing tower circulation pipeline 26. The equipment monitors the filtered water in real time. If the water meets the standard, it continues to flow into the water washing tower 19. If it does not meet the standard, it is discharged through the drainage pipeline 27 and fresh water is injected through the water inlet 22. The bottom of the second spray tower 21 is equipped with an absorption tower bottom pipeline 5, which is connected to the oxidation tower 6. A dosing pipeline 16 is connected to the oxidation tower 6 or the absorption tower bottom pipeline 5. The output end of the oxidation tower 6 is connected to a sulfur extraction pipeline 11 and a regeneration circulation pipeline 8. The regeneration circulation pipeline 8 is connected to one side of the first spray tower 20 and the second spray tower 21. The sulfur extraction pipeline 11 extracts sulfur product 18, and a solution circulation pump 9 is installed on the regeneration circulation pipeline 8.

[0039] Absorption tower 1 is used to absorb H2S, and its working principle is as follows:

[0040] Biogas enters from the lower part of spray tower 21, and catalyst solution enters from dosing pipeline 16. The catalyst solution enters the coarse desulfurization section of spray tower 21 and the fine desulfurization section of spray tower 20 through regeneration circulation pipeline 8. In the coarse desulfurization section, the spraying device inside spray tower 21 absorbs the H2S gas in the rising biogas and carries out the following reaction:

[0041] In the fine desulfurization section, the catalyst solution continues to absorb H2S gas from the gas absorbed in the coarse desulfurization section, and the following reaction is carried out:

[0042] The catalyst solution after absorbing H2S gas enters the oxidation tower 6 through the bottom pipeline 5 of the absorption tower for regeneration and the following reaction: Elemental sulfur precipitates from the bottom of oxidation tower 6, and the regenerated catalyst solution in oxidation tower 6 continues to circulate to absorb H2S gas.

[0043] After being absorbed by the desulfurization section, the gas enters the filtration section of the water washing tower 19. Fresh water is introduced into the water washing tower 19 and comes into countercurrent contact with the gas after being absorbed by the desulfurization section. Small particles, droplets and impurities carried by the absorbed gas are filtered down. The gas purified by the water washing tower 19 is extracted through the gas extraction pipeline 10, while the water enters the filter 24 through the bottom of the water washing tower 19. The filter 24 filters out impurities in the water. The filtered water is circulated back into the water washing tower 19 for water washing. When the circulating water does not achieve the desired filtration effect, it is discharged through the drain pipeline 27, and fresh water is injected through the inlet 22 to continue water washing. Example 4

[0044] This embodiment provides a specific application scenario:

[0045] Table 1 shows the composition of the biogas that needs to be treated:

[0046]

[0047] Table 1

[0048] Table 2 shows the design parameters for this embodiment:

[0049]

[0050] Table 2

[0051] Considering the large volume of acid gas and low hydrogen sulfide content in this project, the dual-tower spray process of Example 1 is suitable to reduce equipment volume and investment. The technology is mature and stable, the process is simple and stable, the hydrogen sulfide content in the purified air is ≤10ppm, the by-product sulfur has a moisture content of 20%-30%, the catalyst can be regenerated and recycled, and there is no external discharge of waste gas, wastewater, or solid waste.

[0052] In this embodiment, the removal of hydrogen sulfide is mainly divided into four parts: hydrogen sulfide absorption section, catalyst regeneration section, sulfur filtration section, and reagent addition section.

[0053] Hydrogen sulfide absorption section: This section is mainly completed by absorption tower 1. In this embodiment, the diameters of spray tower 20 and spray tower 21 are 1.2 mm. The diameter of the vertical section of the water washing tower 19 is 1.5m, and the vertical section is 4.5m high. The biogas first passes through the acid separator 2 from the boundary area, and then enters the two series-connected spray towers 20 and 21. The mixed gas comes into countercurrent contact with the iron ion ratio solution sprayed from the top spray devices of spray towers 20 and 21, and hydrogen sulfide is converted into elemental sulfur. The absorption liquid flow rate of spray towers 20 and 21 is 85 m³ / h. The gas enters the water washing tower 19 from spray tower 20 to remove entrained droplets and sulfur. The purified biogas is then extracted through the gas extraction pipeline 10 and enters the purified gas separator for further processing in the subsequent system. The washing flow rate of water washing tower 19 is 50 m³ / h.

[0054] Catalyst regeneration section: The rich liquid in absorber 1 is sent to oxidation tower 6 via absorbent return pump 7. Oxidation tower 6 is equipped with a jet pump, the outlet of which is 16m... 3 A flow rate of / h enters the top of oxidation tower 6. The jet pump sprays the solution evenly onto the surface of the solution through nozzles. The spraying can break up the foam or floating sulfur accumulated on the surface of the solution. Oxidation tower 6 is a container with a diameter of 1.8m and a straight section height of 8m with a conical bottom. Air of 327Nm³ / h from the blower or air compressor 17 is evenly distributed in the area of ​​oxidation tower 6 through a distributor for catalyst regeneration. The regenerated solution is pumped back to spray tower 20 and spray tower 21 by solution circulation pump 9 for recycling and continued absorption of hydrogen sulfide.

[0055] Sulfur filtration section: The sulfur particles formed in the absorption tower 1 are sent to the oxidation tower 6 by the absorption liquid return pump 7. The solid sulfur is enriched in the oxidation tower 6 and settles at the bottom of the cone as a sulfur slurry with a solid content of 5-15wt%. The bottom of the cone 28 has a series of air purging rings with nozzles all over them. Compressed air is used to purge the bottom of the cone at regular intervals to prevent sulfur from adhering. The sulfur slurry with a high concentration of sulfur is sent to the plate and frame filter press through the sulfur slurry pump 13. After filtration, sulfur product 18 is obtained. The filtrate flows back into the oxidation tower 6 by gravity.

[0056] Chemical addition section: Five types of chemical agents are added through the dosing line 16: XR-SR1 (chelating iron ion catalyst), XR-SR2 (chelating agent), XR-SR6 (surfactant), 45% KOH, and XR-SR3 (bactericide). XR-SR1, XR-SR2, XR-SR6, and 45% KOH are added to oxidation tower 6 via metering pumps, while the others can be added manually at regular intervals.

[0057] In summary, due to the adoption of the above technical solution, this application has the following advantages:

[0058] 1. High hydrogen sulfide removal rate, with a removal rate of over 99.99% in one-step reaction, and the H2S concentration in the treated tail gas can be controlled below 10 ppm;

[0059] 2. It has a wide range of applications and can handle various gases containing H2S with high selectivity;

[0060] 3. It has high operational flexibility and can adapt to large fluctuations in the H2S concentration and flow rate of the feed gas from 0 to 100%.

[0061] 4. Environmentally friendly, with no waste generated;

[0062] 5. The reaction conditions are mild, and it is a liquid-phase, room temperature and pressure reaction process;

[0063] 6. The process is simple, and start-up, shutdown, and daily operation are all easy;

[0064] 7. High economic performance, small footprint, low investment cost, and low daily operating cost;

[0065] 8. High safety performance; the system does not use any toxic chemicals, and there is no H2S gas in the sulfur products.

[0066] 9. Reliable operation: The unique design ensures that there is no blockage and guarantees stable operation over a long period of time.

[0067] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0068] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, the various possible combinations in this application will not be described separately.

[0069] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, and such combinations should also be regarded as the content disclosed in this application.

Claims

1. A hydrogen sulfide removal apparatus comprising an absorption column (1) to which an absorption column feed line (30) is connected, characterized in that, The absorption tower (1) is connected with the oxidation tower (6) through the absorption tower kettle pipeline (5), the air pipeline (29) is arranged on the oxidation tower (6), the dosing pipeline (16) is arranged on the oxidation tower (6), or the dosing pipeline (16) is arranged on the absorption tower kettle pipeline (5), one side of the oxidation tower (6) is connected with the middle upper part of the absorption tower (1) through the regeneration circulation pipeline (8), and the bottom of the oxidation tower (6) is provided with the sulfur extraction pipeline (11); the absorption tower (1) comprises a water washing tower (19), a spray tower one (20) is arranged in series at the lower part of the water washing tower (19), a spray tower two (21) is arranged in series at the lower part of the spray tower one (20), and the bottom of the spray tower two (21) is provided with the absorption tower kettle pipeline (5).

2. A hydrogen sulfide removal device according to claim 1, characterized in that The sulfur extraction pipeline (11) is connected with the vacuum filter (15).

3. A hydrogen sulfide removal device according to claim 2, wherein The vacuum filter (15) is connected with the recovery solution circulation pipeline (12), and the recovery solution circulation pipeline (12) is connected with the middle upper part of the oxidation tower (6).

4. The hydrogen sulfide removal device of claim 1, wherein, The acid separation tank (2) is connected with the absorption tower feed pipeline (30), one side of the acid separation tank (2) is provided with the feed pipeline (3), and the bottom of the acid separation tank (2) is provided with the acid recovery pipeline (4).

5. The hydrogen sulfide removal device of claim 1, wherein, One side of the water washing tower (19) is provided with a water inlet (22), and the kettle of the water washing tower (19) is provided with a water solution extraction pipeline.

6. A hydrogen sulfide removal device according to claim 5, wherein The water solution extraction pipeline comprises a water washing tower circulation pipeline one (23), the water washing tower circulation pipeline one (23) is connected with the filter (24), the output end of the filter (24) is connected with the water washing tower circulation pipeline two (26), and the water washing tower circulation pipeline two (26) is connected with the middle upper part of the water washing tower (19).

7. A hydrogen sulfide removal device according to claim 6, wherein The water washing tower circulation pipeline two (26) is connected with the drain pipeline (27).

8. The hydrogen sulfide removal device of claim 1, wherein, The absorption tower feed pipeline (30) is connected with the middle lower part of the spray tower two (21), the spray tower two (21) is connected with the oxidation tower (6), and one side of the oxidation tower (6) is connected with the spray tower one (20) and the spray tower two (21) respectively through the regeneration circulation pipeline (8).

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