CN216062697U - Inside and outside bucket self-loopa airlift wet flue gas desulfurization device - Google Patents
Inside and outside bucket self-loopa airlift wet flue gas desulfurization device Download PDFInfo
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- CN216062697U CN216062697U CN202122047227.XU CN202122047227U CN216062697U CN 216062697 U CN216062697 U CN 216062697U CN 202122047227 U CN202122047227 U CN 202122047227U CN 216062697 U CN216062697 U CN 216062697U
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Abstract
The utility model discloses an inner and outer barrel self-circulation airlift wet desulphurization device, which comprises an absorption oxidation tower, an injection pump, a heat exchanger, a sulfur slurry pump, a filter press, a filtrate storage tank and a filtrate pump, wherein the absorption oxidation tower comprises an acid gas inlet, a purified gas outlet, a desulfurizer inlet, an air inlet, a medicament replenishing port, a desulfurizer jet orifice, a filtrate inlet, a manhole, an outer barrel, a sieve plate, an inner barrel, an acid gas distributor, a desulfurizer circulation inlet, an air distributor, a desulfurizer circulation outlet, a blowing ring and a sulfur slurry outlet. The utility model has the advantages of environment protection, simple operation, equipment investment and operationLow cost, easy prying, and is especially suitable for use in source gas with air quantity lower than 21000 m3A middle and small sized gas hydrogen sulfide removal project.
Description
Technical Field
The utility model relates to an inner and outer barrel self-circulation airlift wet desulphurization device, belonging to the technical field of waste gas treatment.
Background
Hydrogen sulphide is a harmful gas and the gas containing hydrogen sulphide must be desulphurised before being discharged into the atmosphere or into the next process stage. The common desulfurization process can be divided into a dry desulfurization process and a wet desulfurization process, the Claus method is a dry desulfurization process which is relatively common in industry, and is widely applied to the large-scale gas desulfurization process in the industries of power generation, petrifaction and natural gas. The wet desulphurization process comprises a solvent absorption desulphurization method and an oxidation desulphurization method, and the absorption desulphurization process needs to decompose the absorbed hydrogen sulfide at high temperature to obtain high-concentration hydrogen sulfide, and then prepare sulfur; the oxidation desulfurization method removes the sulfur by adding a certain catalyst to convert the hydrogen sulfide in the gas into elemental sulfur, and the complex iron wet desulfurization technology is a method for removing the sulfide by wet oxidation reduction with iron as the catalyst, and has the advantages of low energy consumption, environmental protection, high hydrogen sulfide removal rate and no CO pollution2The method has the advantages of content influence, one-step sulfur elementary substance conversion and the like, and is particularly suitable for occasions with low hydrogen sulfide concentration or high hydrogen sulfide concentration but low gas flow. At present, the complex iron is removed by a wet methodThe sulfur process mostly adopts a double-tower flow, namely an absorption process of hydrogen sulfide conversion and an oxidation process of desulfurizer regeneration are respectively arranged in two towers, the method meets the requirement of high air volume and a treatment process of gas hydrogen sulfide needing to be recovered, but for medium and low air volume, the method does not need to recover and treat waste gas containing hydrogen sulfide which does not react with oxygen, the equipment cost and the operation cost of the double-tower flow are high, the process device is complex, the occupied area is wide, the skid-mounting is difficult, and the method is not suitable for treating the waste gas containing hydrogen sulfide.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide an inner and outer barrel self-circulation airlift wet desulphurization device.
The technical scheme provided by the utility model is as follows: an inner and outer barrel self-circulation airlift wet desulphurization device comprises an absorption oxidation tower, an injection pump, a heat exchanger, a sulfur slurry pump, a filter press, a filtrate storage tank and a filtrate pump; it is characterized in that the tower body of the absorption oxidation tower is formed by connecting an outer cylinder, a tower top at the upper end of the outer cylinder and a conical bottom at the lower end of the outer cylinder; the middle part of the tower top is provided with an acid gas inlet and a purified gas outlet, at least 2 desulfurizer inlets are uniformly distributed on the tower top, at least 3 air inlets are uniformly arranged outside the desulfurizer inlets on the tower top, and a medicament replenishing port is arranged on the tower top; an inner cylinder is arranged in the outer cylinder; the bottom of the inner cylinder and the bottom of the outer cylinder are positioned on the same horizontal plane; the upper end of the inner cylinder is provided with a sieve plate, and sieve holes are uniformly arranged on the sieve plate; the inner part of the inner cylinder is a vulcanization absorption area, a gap between the inner cylinder and the outer cylinder is an oxidation area, and the inner part of the conical bottom at the lower end of the outer cylinder is a sulfur precipitation area; the lower part of the oxidation zone in the tower body is provided with an acid gas distributor which is connected with an acid gas inlet through a pipeline; the bottom of the oxidation zone is provided with at least 3 air distributors, each air distributor is formed by connecting a main pipe and an aeration pipe, the aeration pipes are arranged on two sides of the main pipe, and the main pipe of each air distributor is correspondingly connected with an air inlet through an air inlet pipeline; a blowing ring is arranged in the conical bottom, and a sulfur slurry outlet is arranged at the lower end of the conical bottom; each desulfurizer inlet is connected with a desulfurizer jet orifice which is arranged in the outer cylinder, and the outer cylinder is provided with a filtrate inlet, a manhole, a desulfurizer circulating inlet and a desulfurizer circulating outlet; the desulfurizer circulation outlet is sequentially connected with the jet pump, the heat exchanger and the desulfurizer circulation inlet, and the sulfur slurry outlet is sequentially connected with the sulfur slurry pump, the filter press, the filtrate storage tank, the filtrate pump and the filtrate inlet.
Preferably, the number of the desulfurizer inlets is 4, the number of the air inlets is 6, and the number of the air distributors is 6.
Preferably, the main pipes of the at least 3 air distributors are distributed in a regular edge shape.
Preferably, the height-diameter ratio of the inner cylinder is 3-8, the diameter ratio of the inner cylinder to the outer cylinder is 1/3-1/2, and the height ratio of the inner cylinder to the outer cylinder is 1/2-2/3.
Preferably, the ratio of the inner cylinder diameter to the outer cylinder diameter is 0.35, and the ratio of the inner cylinder height to the outer cylinder height is 0.63.
Preferably, the sieve plate is uniformly provided with 8-40 sieve holes, and the pore size of the sieve holes is 50-400 mm.
Preferably, the mesh size is 12.
Preferably, the liquid level height of the desulfurization solution in the tower body at least exceeds the height of the inner cylinder by 150 mm.
Preferably, the conical bottom is conical, and the inclination angle is 45-65 degrees.
Preferably, the number of the purge rings is 3-6.
The utility model has the beneficial effects that: aiming at the waste gas containing hydrogen sulfide which does not need to be recovered and can be directly contacted with air, the utility model needs less equipment and is easy to pry under the condition that the content of the hydrogen sulfide in the treated purified gas is lower than 1 ppm; when the gas with low gas amount or low hydrogen sulfide content is processed, the equipment cost and the operation cost of unit processing amount can be reduced, the occupied area is reduced, and the risk of pipeline blockage caused by the transmission of the sulfur-rich liquid between equipment is reduced; the desulfurizer can be recycled, no wastewater is generated in the desulfurization process, and the method is environment-friendly. The utility model has the advantages of environmental protection, simple operation, low equipment investment and operation cost, easy prying and the like, and is particularly suitable for the source air quantity lower than 21000 m3A middle and small sized gas hydrogen sulfide removal project.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of an absorption oxidation tower of the present invention;
FIG. 3 is a top view of a screen deck of the inner barrel of the present invention;
figure 4 is a top view of the air distributor portion of the present invention.
Detailed Description
The following detailed description of specific embodiments of the utility model, taken in conjunction with the accompanying drawings, is not to be taken in a limiting sense.
As shown in fig. 1 to 4, the inner and outer barrel self-circulation airlift wet desulfurization device comprises an absorption oxidation tower, a jet pump 18, a heat exchanger 19, a slurry pump 20, a filter press 21, a filtrate storage tank 22 and a filtrate pump 23. The tower body of the absorption oxidation tower is formed by connecting an outer cylinder 9, a tower top 24 at the upper end of the outer cylinder 9 and a conical bottom 25 at the lower end of the outer cylinder 9. The middle part of the tower top 24 is provided with an acid gas inlet 1 and a purified gas outlet 2, at least 2 (4 in the embodiment) desulfurizer inlets 3 are uniformly distributed on the tower top 24, at least 3 (6 in the embodiment) air inlets 4 are uniformly arranged outside the desulfurizer inlets 3 on the tower top 24, and a medicament replenishing port 5 is arranged on the tower top 24. The inner cylinder 11 is arranged in the outer cylinder 9, the height-diameter ratio of the inner cylinder is 3-8, the diameter ratio of the inner cylinder 11 to the outer cylinder 8 is 1/3-1/2 (preferably 0.35), and the height ratio of the inner cylinder 11 to the outer cylinder 8 is 1/2-2/3 (preferably 0.63).
The bottom of the inner cylinder 11 and the bottom of the outer cylinder 9 are in the same horizontal plane. The upper end of the inner cylinder 11 is provided with a sieve plate 10, 8-40 (preferably 12) sieve holes are uniformly arranged on the sieve plate 10, the aperture size of each sieve hole is determined by the gas amount and the hydrogen sulfide content, the aperture size of each sieve hole is 50-400 mm (preferably 130 mm), and the liquid level height of the desulfurization liquid in the tower body at least exceeds the height of the inner cylinder 11 by 150 mm.
The inner part of the inner cylinder 11 is a vulcanization absorption area, a gap between the inner cylinder 11 and the outer cylinder 9 is an oxidation area, and the inner part of the conical bottom 25 at the lower end of the outer cylinder 9 is a sulfur precipitation area. The lower part of the oxidation zone in the tower body is provided with an acid gas distributor 12, and the acid gas distributor 12 is connected with an acid gas inlet 1 through a pipeline; at least 3 (6 in the embodiment) air distributors 14 are arranged at the bottom of the oxidation zone, the air distributors 14 are distributed in the oxidation zone between the inner barrel 11 and the outer barrel 9, the air distributors 14 are formed by connecting main pipes 142 and aeration pipes 143, the aeration pipes 143 are arranged at two sides of the main pipes 142, and the main pipes 142 of each air distributor 14 are correspondingly connected with the air inlets 4 through the air inlet pipelines 161. The 6 air distributor main tubes 142 are distributed in a regular hexagon.
The conical bottom 25 is conical, the inclination angle is 45-65 degrees (preferably 53 degrees), 3-6 (preferably 3) blowing rings 16 are arranged in the conical bottom 25, and a sulfur slurry outlet 17 is formed in the lower end of the conical bottom 25. Each desulfurizer inlet 3 is connected with a desulfurizer jet orifice 6, the desulfurizer jet orifices 6 are arranged in an outer cylinder 9, and a filtrate inlet 7, a manhole 8, a desulfurizer circulating inlet 13 and a desulfurizer circulating outlet 15 are arranged on the outer cylinder 9. The desulfurizer circulating outlet 15 is sequentially connected with an injection pump 18, a heat exchanger 19 and a desulfurizer circulating inlet 13, and the sulfur slurry outlet 17 is sequentially connected with a sulfur slurry pump 20, a filter press 21, a filtrate storage tank 22, a filtrate pump 23 and a filtrate inlet 7.
As shown in fig. 1, acid gas enters an absorption oxidation tower from an acid gas inlet 1, and is fully reacted with a desulfurizer in an inner cylinder 11 through an acid gas distributor 12, hydrogen sulfide is oxidized into elemental sulfur, the purified gas is contacted with the desulfurizer sprayed from a desulfurizer spray opening 6 in the rising process for secondary purification, and then the purified gas is discharged into the atmosphere at a purified gas outlet 2 or enters the next process; the sulfur is settled into a sulfur settling area at the bottom of the absorption oxidation tower under the action of gravity, then the sulfur and a small amount of desulfurizer are transported to a filter press 21 by a sulfur slurry pump 20 through a sulfur slurry outlet 17, solid sulfur is separated, and filtrate returns to the absorption oxidation tower through a filtrate storage tank 22, a filtrate pump 23 and a filtrate inlet 7; the low-activity desulfurizer at the bottom of the absorption oxidation tower circularly enters the oxidation part of the absorption oxidation tower through a desulfurizer circulating outlet 15, an injection pump 18, a heat exchanger 19 and a desulfurizer circulating inlet 13 under the suction action of the injection pump 18, and reacts with oxygen in the air from an air distributor 14, ferrous ions are oxidized into iron ions, the regeneration of the desulfurizer is completed, and the regenerated desulfurizer enters a desulfurization area through a sieve hole of an inner cylinder sieve plate 10 to be purified again by acid gas.
It should be understood that parts of the specification not set forth in detail are well within the prior art. The above examples only describe the preferred embodiments of the present invention, and other preferred embodiments are not described in detail, and the scope of the present invention is not limited thereto, and those skilled in the art should make various changes and modifications to the technical solution of the present invention without departing from the spirit of the present invention, and all such changes and modifications fall within the scope of the present invention as defined by the claims.
Claims (10)
1. An inner and outer barrel self-circulation airlift wet desulphurization device comprises an absorption oxidation tower, an injection pump, a heat exchanger, a sulfur slurry pump, a filter press, a filtrate storage tank and a filtrate pump; it is characterized in that the tower body of the absorption oxidation tower is formed by connecting an outer cylinder, a tower top at the upper end of the outer cylinder and a conical bottom at the lower end of the outer cylinder; the middle part of the tower top is provided with an acid gas inlet and a purified gas outlet, at least 2 desulfurizer inlets are uniformly distributed on the tower top, at least 3 air inlets are uniformly arranged outside the desulfurizer inlets on the tower top, and a medicament replenishing port is arranged on the tower top; an inner cylinder is arranged in the outer cylinder; the bottom of the inner cylinder and the bottom of the outer cylinder are positioned on the same horizontal plane; the upper end of the inner cylinder is provided with a sieve plate, and sieve holes are uniformly arranged on the sieve plate; the inner part of the inner cylinder is a vulcanization absorption area, a gap between the inner cylinder and the outer cylinder is an oxidation area, and the inner part of the conical bottom at the lower end of the outer cylinder is a sulfur precipitation area; the lower part of the oxidation zone in the tower body is provided with an acid gas distributor which is connected with an acid gas inlet through a pipeline; the bottom of the oxidation zone is provided with at least 3 air distributors, each air distributor is formed by connecting a main pipe and an aeration pipe, the aeration pipes are arranged on two sides of the main pipe, and the main pipe of each air distributor is correspondingly connected with an air inlet through an air inlet pipeline; a blowing ring is arranged in the conical bottom, and a sulfur slurry outlet is arranged at the lower end of the conical bottom; each desulfurizer inlet is connected with a desulfurizer jet orifice which is arranged in the outer cylinder, and the outer cylinder is provided with a filtrate inlet, a manhole, a desulfurizer circulating inlet and a desulfurizer circulating outlet; the desulfurizer circulation outlet is sequentially connected with the jet pump, the heat exchanger and the desulfurizer circulation inlet, and the sulfur slurry outlet is sequentially connected with the sulfur slurry pump, the filter press, the filtrate storage tank, the filtrate pump and the filtrate inlet.
2. The internal and external barrel self-circulation airlift wet desulfurization device according to claim 1, wherein the number of the desulfurizing agent inlets is 4, the number of the air inlets is 6, and the number of the air distributors is 6.
3. The internal and external barrel self-circulation airlift wet desulfurization unit according to claim 1, wherein the main pipes of said at least 3 air distributors are arranged in a straight-edged shape.
4. The internal and external barrel self-circulation airlift wet desulfurization device according to claim 1, wherein the ratio of the height to the diameter of the internal barrel is 3 to 8, the ratio of the height to the diameter of the internal barrel to the diameter of the external barrel is 1/3 to 1/2, and the ratio of the height of the internal barrel to the height of the external barrel is 1/2 to 2/3.
5. The internal and external barrel self-circulation airlift wet desulfurization device according to claim 4, wherein the ratio of the inner diameter of the internal barrel to the outer diameter of the external barrel is 0.35, and the ratio of the height of the internal barrel to the height of the external barrel is 0.63.
6. The self-circulation airlift wet desulfurization device as claimed in claim 1, wherein the sieve plate has 8-40 sieve holes uniformly distributed therein, and the diameter of the sieve holes is 50-400 mm.
7. The internal and external bucket self-circulating airlift wet desulfurization unit of claim 6, wherein said sieve mesh is 12.
8. The internal and external barrel self-circulation airlift wet desulfurization device according to claim 1, wherein the liquid level of the desulfurization solution in the tower body exceeds the height of the internal barrel by at least 150 mm.
9. The internal and external barrel self-circulation airlift wet desulfurization device according to claim 1, wherein the conical bottom is conical, and the inclination angle is 45 ° to 65 °.
10. The internal and external bucket self-circulating airlift wet desulfurization unit of claim 1, wherein there are 3-6 purge rings.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122047227.XU CN216062697U (en) | 2021-08-28 | 2021-08-28 | Inside and outside bucket self-loopa airlift wet flue gas desulfurization device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122047227.XU CN216062697U (en) | 2021-08-28 | 2021-08-28 | Inside and outside bucket self-loopa airlift wet flue gas desulfurization device |
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| CN216062697U true CN216062697U (en) | 2022-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117654256A (en) * | 2024-01-31 | 2024-03-08 | 四川凌耘建科技有限公司 | Normal pressure acid gas desulfurization device |
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2021
- 2021-08-28 CN CN202122047227.XU patent/CN216062697U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117654256A (en) * | 2024-01-31 | 2024-03-08 | 四川凌耘建科技有限公司 | Normal pressure acid gas desulfurization device |
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