Hydrogen sulfide waste gas treatment device
By combining chemical absorption and physical adsorption technology in the hydrogen sulfide waste gas treatment device, and using the design of hierarchical treatment and activated carbon filler, the problems of high consumption of chemical solvents and equipment corrosion in the prior art are solved, and efficient, economical and environmentally friendly waste gas treatment effect is achieved.
Patent Information
- Application Number
- CN202421716803.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing hydrogen sulfide waste gas treatment device consumes a large amount of chemical solvents, resulting in high investment costs and corrosive solvents, increasing equipment maintenance costs.
The hydrogen sulfide exhaust gas treatment device that combines chemical absorption and physical adsorption technology is adopted to physically adsorb activated carbon fillers through the staging of the primary treatment box and the secondary treatment box, and solvent consumption is reduced through spray treatment and recycling.
It realizes efficient, economical and environmentally friendly treatment of hydrogen sulfide waste gas, reduces the consumption of chemical solvents and equipment corrosion, and reduces operating costs.
Smart Images
Figure CN222855022U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of waste gas treatment, in particular to a hydrogen sulfide waste gas treatment device. Background Art
[0002] Hydrogen sulfide (H2S) is a colorless gas with a rotten egg smell. It is widely present in industrial production, such as petroleum, natural gas, coal gas, leather, papermaking and other industries. Hydrogen sulfide is not only highly irritating and toxic, causing harm to human health and equipment, but also a flammable and explosive gas. If it is mixed with air or oxygen in a certain proportion, it will explode. Therefore, effective treatment of hydrogen sulfide waste gas is an important task for protecting the environment and safety.
[0003] In the prior art, chemical solvents are usually used to spray hydrogen sulfide waste gas inside the equipment, and hydrogen sulfide is absorbed by chemical solvents (such as alkali solution, alcohol amine, etc.) to convert it into products such as sulfite, sulfate or elemental sulfur. However, when this method is actually used, the solvent consumption is large, resulting in high investment costs, and the chemical solvents are corrosive, which causes serious corrosion of the equipment and increases operating costs. Therefore, it is particularly important to develop a more efficient and economical hydrogen sulfide waste gas treatment device. Utility Model Content
[0004] In view of the existing deficiencies, the utility model provides a hydrogen sulfide waste gas treatment device, which solves the problems raised in the above background technology. The device achieves efficient, economical and environmentally friendly treatment of hydrogen sulfide waste gas by combining chemical absorption and physical adsorption technology.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A hydrogen sulfide waste gas treatment device comprises a secondary treatment box and a primary treatment box, wherein the secondary treatment box is arranged on the left side of the primary treatment box, a connecting pipe is arranged on the top of the primary treatment box, and the left end of the connecting pipe is connected to the secondary treatment box, an exhaust gas intake pipe is fixedly connected to the right side of the primary treatment box, an exhaust gas discharge pipe is fixedly connected to the top of the secondary treatment box, a first water inlet pipe is arranged on the right side of the primary treatment box, a second valve is installed on the first water inlet pipe, a first drain pipe is arranged on the lower side of the first water inlet pipe, a third valve is installed on the first drain pipe, an activated carbon filler is arranged inside the secondary treatment box, a diverter is arranged on the upper side of the activated carbon filler, a plurality of groups of spray branches are evenly arranged on the annular surface of the diverter, a plurality of groups of spray heads are evenly arranged on the lower side of the annular surface of the spray branch pipe, a spray main pipe is fixedly connected to the upper side of the diverter, and a sixth valve is installed on the spray main pipe.
[0007] Furthermore, inspection windows are provided on the front surfaces of the secondary processing box and the primary processing box.
[0008] Furthermore, an oxygen pipe is fixedly connected to the top of the primary treatment box, the lower end of the oxygen pipe extends into a position near the bottom of the primary treatment box, and a first valve is installed on the oxygen pipe.
[0009] Furthermore, a triangular-structured deflection baffle is provided at the bottom of the inner wall of the primary processing box, and the tip of the deflection baffle faces upward. Slag discharge pipes are provided on both sides of the bottom of the primary processing box. The two groups of slag discharge pipes are respectively located on the left and right sides of the deflection baffle, and the slag discharge pipes are equipped with a fourth valve.
[0010] Furthermore, a circulation pump is arranged on the left side of the secondary treatment box, the input end of the circulation pump is connected with the inside of the secondary treatment box through a third drain pipe, the output end of the circulation pump is fixedly connected with a second drain pipe, and an eighth valve is installed on the second drain pipe.
[0011] Furthermore, the second drain pipe is connected to the main sprinkler pipe through a return pipe, and the connection between the two is located on the right side of the sixth valve, and the return pipe is equipped with a seventh valve.
[0012] Furthermore, a second water inlet pipe is connected to the upper side of the spray main pipe, and the connection between the two is located on the right side of the return pipe, and a fifth valve is installed on the second water inlet pipe.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. The utility model combines chemical absorption and physical adsorption technologies, and at the same time sets a primary treatment box and a secondary treatment box to achieve graded treatment of waste gas, improve the treatment effect of hydrogen sulfide waste gas, reduce the consumption of chemical solvents, reduce the corrosion of chemical solvents to equipment, reduce investment costs and operating costs, and achieve efficient, economical and environmentally friendly treatment of hydrogen sulfide waste gas, which has high practical value and application prospects.
[0015] 2. In the utility model, an oxygen pipe is fixedly connected to the top of the primary treatment box, and the lower end of the oxygen pipe extends into the bottom of the primary treatment box. The oxygen pipe is equipped with a first valve. The oxygen pipe is used to add oxygen to the primary treatment box, which can enhance the oxidation reaction of the waste, help improve the treatment effect of the waste gas, and thus improve the treatment efficiency of the waste gas.
[0016] 3. The baffles can make the particles in the exhaust gas settle to both sides. When the exhaust gas passes through the baffles, the heavier particles will be directed to the bottom of the treatment box, and then the sediment can be easily discharged from the treatment box through the slag discharge pipe. By opening the fourth valve, the operator can regularly clean the sediment at the bottom of the treatment box to keep the treatment box clean and running efficiently.
[0017] 4. A second water inlet pipe is connected to the upper side of the spray main pipe, and the connection between the two is located on the right side of the return pipe. The second water inlet pipe is equipped with a fifth valve. Clean water can be added to the spray main pipe through the second water inlet pipe, and then the activated carbon filler is flushed with clean water to flush out the hydrogen sulfide adsorbed in the activated carbon filler, so as to achieve the regeneration of the activated carbon filler. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0019] Figure 2 It is a structural schematic diagram of the primary processing box in the utility model.
[0020] Figure 3 It is a cross-sectional view of the primary processing box in the utility model.
[0021] Figure 4 It is a structural schematic diagram of the secondary processing box in the utility model.
[0022] Figure 5 It is a cross-sectional view of the secondary processing box in the utility model.
[0023] In the figure: 1. exhaust gas discharge pipe; 2. secondary treatment box; 3. connecting pipe; 4. primary treatment box; 5. inspection window; 6. oxygen pipe; 7. first valve; 8. second valve; 9. first water inlet pipe; 10. exhaust gas inlet pipe; 11. third valve; 12. first drain pipe; 13. slag discharge pipe; 14. fourth valve; 15. baffle; 16. first water inlet pipe; 17. spray main pipe; 18. return pipe; 19. second drain pipe; 20. circulation pump; 21. third drain pipe; 22. fifth valve; 23. sixth valve; 24. seventh valve; 25. eighth valve; 26. diverter; 27. spray branch pipe; 28. spray head; 29. activated carbon filler. DETAILED DESCRIPTION
[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] Example:
[0026] like Figures 1 to 5As shown, a hydrogen sulfide waste gas treatment device includes a secondary treatment box 2 and a primary treatment box 4, the secondary treatment box 2 is arranged on the left side of the primary treatment box 4, a connecting pipe 3 is arranged on the top of the primary treatment box 4, the left end of the connecting pipe 3 is connected to the secondary treatment box 2, an exhaust gas intake pipe 10 is fixedly connected to the right side of the primary treatment box 4, an exhaust gas discharge pipe 1 is fixedly connected to the top of the secondary treatment box 2, a first water inlet pipe 9 is arranged on the right side of the primary treatment box 4, a second valve 8 is installed on the first water inlet pipe 9, a first drain pipe 12 is arranged on the lower side of the first water inlet pipe 9, a third valve 11 is installed on the first drain pipe 12, and the secondary treatment box 4 is provided with a first valve 12. An activated carbon filler 29 is arranged inside the box 2, and a diverter 26 is arranged on the upper side of the activated carbon filler 29. A plurality of groups of spray branches 27 are evenly arranged on the annular surface of the diverter 26, and a plurality of groups of spray heads 28 are evenly installed on the lower side of the annular surface of the spray branch 27. A spray main pipe 17 is fixedly connected to the upper side of the diverter 26, and a sixth valve 23 is installed on the spray main pipe 17. This design solves the problem that the existing device usually uses chemical solvents to spray the hydrogen sulfide waste gas inside the equipment, the solvent consumption is large, resulting in high investment cost, and the chemical solvent is corrosive, resulting in serious corrosion of the equipment and increased operating cost.
[0027] In this embodiment, inspection windows 5 are provided on the front surfaces of the secondary treatment box 2 and the primary treatment box 4. The inspection windows 5 allow the operator to intuitively observe the working status inside the treatment box. By observing the situation inside the treatment box in real time, the operator can adjust the treatment parameters according to the actual treatment effect of the exhaust gas, such as spray intensity, oxygen flow rate, etc., to optimize the treatment effect.
[0028] In this embodiment, an oxygen pipe 6 is fixedly connected to the top of the primary treatment box 4, and the lower end of the oxygen pipe 6 extends into the primary treatment box 4 near the bottom, and a first valve 7 is installed on the oxygen pipe 6. The oxygen pipe 6 is used to add oxygen to the primary treatment box 4, which can enhance the oxidation reaction of the waste, help improve the treatment effect of the waste gas, and thus improve the treatment efficiency of the waste gas.
[0029] In this embodiment, a triangular baffle 15 is provided at the bottom of the inner wall of the primary treatment box 4, with the tip of the baffle 15 facing upwards. Slag discharge pipes 13 are provided on both sides of the bottom of the primary treatment box 4. Two groups of slag discharge pipes 13 are respectively located on the left and right sides of the baffle 15, and the slag discharge pipes 13 are equipped with a fourth valve 14. The baffle 15 can make the particles in the exhaust gas settle to both sides. When the exhaust gas passes through the baffle 15, the heavier particles will be guided to the bottom of the treatment box, and then the sediment can be conveniently discharged from the treatment box through the slag discharge pipe 13. By opening the fourth valve 14, the operator can regularly clean the sediment at the bottom of the treatment box to keep the treatment box clean and running efficiently.
[0030] In this embodiment, a circulation pump 20 is provided on the left side of the secondary treatment box 2, the input end of the circulation pump 20 is connected to the inside of the secondary treatment box 2 through the third drain pipe 21, and the output end of the circulation pump 20 is fixedly connected to the second drain pipe 19, and the second drain pipe 19 is equipped with an eighth valve 25. The provided circulation pump 20 is used to discharge the chemical solvent absorbed and discarded inside the secondary treatment box 2, and discharge it through the second drain pipe 19.
[0031] In this embodiment, the second drain pipe 19 is connected to the spray main pipe 17 through the return pipe 18, and the connection between the two is located on the right side of the sixth valve 23. The return pipe 18 is equipped with a seventh valve 24. The return pipe 18 can allow the chemical solvent absorbed and discarded inside the secondary treatment box 2 to be extracted and reused, which greatly reduces the consumption of the chemical solvent and saves the investment cost.
[0032] In this embodiment, the second water inlet pipe 16 is connected to the upper side of the spray main pipe 17, and the connection between the two is located on the right side of the return pipe 18. The second water inlet pipe 16 is equipped with a fifth valve 22. The second water inlet pipe 16 can be used to add clean water to the spray main pipe 17, and then the activated carbon filler 29 is flushed with clean water to flush out the hydrogen sulfide adsorbed in the activated carbon filler 29, so as to achieve the regeneration of the activated carbon filler 29.
[0033] The working principle of this hydrogen sulfide waste gas treatment device: in actual use, first open the second valve 8, and inject water into the primary treatment box 4 through the first water inlet pipe 9. When the water level in the primary treatment box 4 reaches an appropriate position, close the second valve 8 to stop injecting water. The waste gas enters the primary treatment box 4 through the waste gas inlet pipe 10 and is blown into the water. At the same time, open the first valve 7 to add oxygen into the primary treatment box 4 through the oxygen pipe 6 to enhance the oxidation reaction of the waste gas and improve the treatment effect. In this process, part of the hydrogen sulfide dissolves in water and reacts with water to form hydrosulfuric acid, and then the hydrosulfuric acid reacts with oxygen to be oxidized into elemental sulfur and water that are insoluble in water. When there are more elemental sulfur solids in the primary treatment box 4, the fourth valve 14 can be opened to discharge the solids. At the same time, the water in the primary treatment box 4 can be discharged and replaced through the first drain pipe 12;
[0034] After the preliminary treatment in the primary treatment box 4, the hydrogen sulfide waste gas enters the secondary treatment box 2 through the waste gas inlet pipe 10. The hydrogen sulfide waste gas contacts the activated carbon filler 29 in the secondary treatment box 2. The activated carbon filler 29 can adsorb the hydrogen sulfide in the waste and further remove the hydrogen sulfide. At the same time, the spray branch pipe 27 and the spray head 28 spray the waste gas with the chemical solvent supplied by the spray main pipe 17, and the chemical solvent reacts with hydrogen sulfide to remove the hydrogen sulfide in the waste gas. The used chemical solvent is pumped out by the circulation pump 20 and discharged through the second drain pipe 19. This part of the solvent can enter the spray main pipe 17 again through the reflux pipe 18 to achieve recycling and reduce solvent consumption;
[0035] When the activated carbon filler 29 is saturated with adsorption, clean water can be added to the spray main pipe 17 through the second water inlet pipe 16. The clean water flushes the activated carbon filler 29 through the spray branch pipe 27 and the spray head 28 to flush out the adsorbed hydrogen sulfide and achieve the regeneration of the activated carbon. Finally, the waste gas after secondary treatment is discharged into the atmosphere through the waste gas discharge pipe 1.
[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.
Claims
1. A hydrogen sulfide waste gas treatment device, comprising a secondary treatment box (2) and a primary treatment box (4), characterized in that: The secondary treatment box (2) is arranged on the left side of the primary treatment box (4); a connecting pipe (3) is arranged on the top of the primary treatment box (4); the left end of the connecting pipe (3) is connected to the secondary treatment box (2); an exhaust gas intake pipe (10) is fixedly connected to the right side of the primary treatment box (4); an exhaust gas discharge pipe (1) is fixedly connected to the top of the secondary treatment box (2); a first water inlet pipe (9) is arranged on the right side of the primary treatment box (4); a second valve (8) is installed on the first water inlet pipe (9); and a first valve (9) is arranged on the lower side of the first water inlet pipe (9). A drainage pipe (12), wherein the first drainage pipe (12) is equipped with a third valve (11), an activated carbon filler (29) is arranged inside the secondary treatment box (2), a diverter (26) is arranged on the upper side of the activated carbon filler (29), a plurality of groups of spray branch pipes (27) are evenly arranged on the annular surface of the diverter (26), a plurality of groups of spray heads (28) are evenly arranged on the lower side of the annular surface of the spray branch pipe (27), a spray main pipe (17) is fixedly connected to the upper side of the diverter (26), and a sixth valve (23) is arranged on the spray main pipe (17).
2. The hydrogen sulfide waste gas treatment device according to claim 1, characterized in that: Inspection windows (5) are provided on the front surfaces of the secondary processing box (2) and the primary processing box (4).
3. The hydrogen sulfide waste gas treatment device according to claim 1, characterized in that: An oxygen tube (6) is fixedly connected to the top of the primary treatment box (4), the lower end of the oxygen tube (6) extends into a position near the bottom of the primary treatment box (4), and a first valve (7) is mounted on the oxygen tube (6).
4. The hydrogen sulfide waste gas treatment device according to claim 1, characterized in that: A triangular-structured baffle plate (15) is provided at the bottom of the inner wall of the primary treatment box (4), with the tip of the baffle plate (15) facing upwards. Slag discharge pipes (13) are provided on both left and right sides of the bottom of the primary treatment box (4). Two groups of slag discharge pipes (13) are respectively located on the left and right sides of the baffle plate (15). A fourth valve (14) is installed on the slag discharge pipe (13).
5. The hydrogen sulfide waste gas treatment device according to claim 1, characterized in that: A circulation pump (20) is arranged on the left side of the secondary treatment box (2); the input end of the circulation pump (20) is connected to the interior of the secondary treatment box (2) via a third drainage pipe (21); the output end of the circulation pump (20) is fixedly connected to a second drainage pipe (19); and the second drainage pipe (19) is equipped with an eighth valve (25).
6. The hydrogen sulfide waste gas treatment device according to claim 5, characterized in that: The second drain pipe (19) is connected to the main spray pipe (17) via a return pipe (18), and the connection between the two is located on the right side of the sixth valve (23). The return pipe (18) is equipped with a seventh valve (24).
7. The hydrogen sulfide waste gas treatment device according to claim 6, characterized in that: The upper side of the spray main pipe (17) is connected to a second water inlet pipe (16), and the connection between the two is located on the right side of the return pipe (18). The second water inlet pipe (16) is equipped with a fifth valve (22).