CN204220027U - Low-temperature methanol washing tail-gas cleaning system - Google Patents
Low-temperature methanol washing tail-gas cleaning system Download PDFInfo
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- CN204220027U CN204220027U CN201420555932.8U CN201420555932U CN204220027U CN 204220027 U CN204220027 U CN 204220027U CN 201420555932 U CN201420555932 U CN 201420555932U CN 204220027 U CN204220027 U CN 204220027U
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Abstract
The utility model discloses a kind of low-temperature methanol washing tail-gas cleaning system, comprise scrubbing tower, separator, dry desulfurizing tower and emptying cylinder, the bottom of scrubbing tower is provided with inlet exhaust gas, scrubbing tower internal upper part is provided with spray equipment, wire mesh demister is provided with in scrubbing tower above spray equipment, the top of scrubbing tower and bottom are respectively equipped with offgas outlet and water out, offgas outlet is connected with the air inlet of separator by pipeline, packing layer is provided with in separator, the top of separator and bottom are respectively equipped with gas vent and liquid outlet, gas vent is connected by the import of pipeline with dry desulfurizing tower, active carbon filler layer and desulfurizing agent packing layer is filled with in dry desulfurizing tower, active carbon filler layer is positioned at the below of desulfurizing agent packing layer, the top of dry desulfurizing tower and bottom are also provided with gas outlet and liquid outlet, gas outlet is connected with emptying cylinder by pipeline.This apparatus structure is simple, and small investment, desulfurized effect is good, sulfur content can be reduced to below 0.1ppm and discharge.
Description
Technical field
The utility model relates to a kind of low-temperature methanol washing tail-gas cleaning system, belongs to technical field of chemical industry.
Background technology
Synthetic ammonia installation low-temperature rectisol, the H 2 S-containing gas that Mathanol regenerating tower produces, if be directly discharged in air without the hydrogen sulfide removed in gas, serious environmental pollution can be caused, particularly sulfur Gas Fields constantly occurs in recent years, the process problem of the sour gas of H 2 S-containing gas more and more causes the attention of people, for reaching the effect of purification hydrogen sulfide tail gas, recycle the sulphur in hydrogen sulfide simultaneously, industrially at present generally adopt Recovered sulphur from hydrogen sulfide, the technique occupying leading position is Claus method, Claus method is by hydrogen sulfide and oxygen combustion, the mode generating sulphur reclaims hydrogen sulfide, but Claus method has requirement to the sulfur content in tail gas, be applicable to sulfur content higher, the hydrogen sulfide tail gas that concentration is larger, and good recycling can not be realized for the tail gas of hydrogen sulfide content in tail gas also containing a small amount of hydrogen sulfide after the hydrogen sulfide-containing tail gas of below 25ppm and Crouse reclaim sulphur, the recycling of this kind of tail gas is worth not high.Therefore, current problem in urgent need to solve is become to the emission abatement of this kind of tail gas.
Utility model content
For existing problem, the purpose of this utility model is to provide a kind of low-temperature methanol washing tail-gas cleaning system, is applicable to the process of hydrogen sulfide content lower than the hydrogen sulfide tail gas of below 25ppm.
To achieve these goals, the technical solution of the utility model is: a kind of low-temperature methanol washing tail-gas cleaning system, it is characterized in that: comprise scrubbing tower, separator, dry desulfurizing tower and emptying cylinder, the bottom of described scrubbing tower is provided with inlet exhaust gas, described scrubbing tower internal upper part is provided with spray equipment, described inlet exhaust gas is positioned at below spray equipment, wire mesh demister is provided with in scrubbing tower above described spray equipment, the top of described scrubbing tower and bottom are respectively equipped with offgas outlet and water out, described offgas outlet is connected with the air inlet of separator by pipeline, packing layer is provided with in described separator, the air inlet of described separator is positioned at below packing layer, the top of described separator and bottom are respectively equipped with gas vent and liquid outlet, described gas vent is connected by the import of pipeline with dry desulfurizing tower, active carbon filler layer and desulfurizing agent packing layer is filled with in described dry desulfurizing tower, described active carbon filler layer is positioned at the below of desulfurizing agent packing layer, described import is positioned at below active carbon filler layer, top and the bottom of described dry desulfurizing tower are also provided with gas outlet and liquid outlet, described gas outlet is connected with emptying cylinder by pipeline.
In technique scheme: the bottom of described separator is provided with liquid level gauge.
In technique scheme: described packing layer is wire packing layer.
In technique scheme: described desulfurizing agent packing layer is iron system desulfurizing agent packing layer.Reach the effect well removing hydrogen sulfide like this.
In technique scheme: the pipeline that the gas outlet of described dry desulfurizing tower is connected with emptying cylinder is also provided with emptying arm and looped pipeline on the spot, and described looped pipeline is connected with the drain pipe on the liquid outlet of bottom.
The beneficial effects of the utility model are: the utility model adopts scrubbing tower to carry out pretreatment to tail gas, removes the methyl alcohol in tail gas and a small amount of hydrogen sulfide, reaches the effect of protection desulfurizing agent.Then separate aqueous water and a small amount of methyl alcohol through separator, then allow tail gas enter dry desulfurizing tower to carry out desulfurization, in the tail gas after overdrying desulfurizing tower, the content of hydrogen sulfide is lower than 0.1ppm.This apparatus structure is simple, and small investment, desulfurized effect is good.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Embodiment 1
As shown in Figure 1, low-temperature methanol washing tail-gas cleaning system of the present utility model is made up of parts such as scrubbing tower 1, separator 2, dry desulfurizing tower 3, emptying cylinder 4 and flowmeters 5.
The bottom of scrubbing tower 1 is provided with inlet exhaust gas 1a, scrubbing tower 1 internal upper part is provided with spray equipment 1b, inlet exhaust gas 1a is positioned at below spray equipment 1b, is provided with wire mesh demister 1c in the scrubbing tower 1 above spray equipment 1b, and the top of scrubbing tower 1 and bottom are respectively equipped with offgas outlet 1d and water out 1f.Offgas outlet 1d is connected with the air inlet 2d of separator 2 by pipeline.
Be provided with packing layer 2a in separator 2, packing layer 2a is preferably wire packing.The air inlet 2d of separator 2 is positioned at below packing layer 2a, and the top of separator 2 and bottom are respectively equipped with gas vent 2b and liquid outlet 2c, and gas vent 2b is connected by the import 3a of pipeline with dry desulfurizing tower 3, and the bottom of separator 2 is provided with liquid level gauge 5.
Active carbon filler layer 3b and desulfurizing agent packing layer 3c is filled with in dry desulfurizing tower 3, active carbon filler layer 3b is positioned at the below of desulfurizing agent packing layer 3c, desulfurizing agent is preferably iron system desulfurizing agent, and the main component of iron system desulfurizing agent is di-iron trioxide and ferrous oxide.Import 3a is positioned at below active carbon filler layer 3b, and the top of dry desulfurizing tower 3 and bottom are also provided with gas outlet 3d and liquid outlet 3e, and gas outlet 3d is connected with emptying cylinder 4 by pipeline.The pipeline that the gas outlet 3d of dry desulfurizing tower 3 is connected with emptying cylinder 4 is also provided with emptying arm 6 and looped pipeline 7 on the spot, and looped pipeline 7 is connected with the drain pipe on the liquid outlet 3e of bottom.Methanol-water separating is delivered to by pipeline from dry desulfurizing tower 3 and separator 2 liquid out.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (5)
1. a low-temperature methanol washing tail-gas cleaning system, it is characterized in that: comprise scrubbing tower (1), separator (2), dry desulfurizing tower (3) and emptying cylinder (4), the bottom of described scrubbing tower (1) is provided with inlet exhaust gas (1a), described scrubbing tower (1) internal upper part is provided with spray equipment (1b), wire mesh demister (1c) is provided with in the scrubbing tower (1) of described spray equipment (1b) top, the top of described scrubbing tower (1) and bottom are respectively equipped with offgas outlet (1d) and water out (1f), described offgas outlet (1d) is connected with the air inlet (2d) of separator (2) by pipeline, packing layer (2a) is provided with in described separator (2), the air inlet (2d) of described separator (2) is positioned at packing layer (2a) below, the top of described separator (2) and bottom are respectively equipped with gas vent (2b) and liquid outlet (2c), described gas vent (2b) is connected with the import (3a) of dry desulfurizing tower (3) by pipeline, active carbon filler layer (3b) and desulfurizing agent packing layer (3c) is filled with in described dry desulfurizing tower (3), described active carbon filler layer (3b) is positioned at the below of desulfurizing agent packing layer (3c), described import (3a) is positioned at active carbon filler layer (3b) below, the top of described dry desulfurizing tower (3) and bottom are also provided with gas outlet (3d) and liquid outlet (3e), described gas outlet (3d) is connected with emptying cylinder (4) by pipeline.
2. low-temperature methanol washing tail-gas cleaning system according to claim 1, is characterized in that: the bottom of described separator (2) is provided with liquid level gauge (5).
3. low-temperature methanol washing tail-gas cleaning system according to claim 1, is characterized in that: described packing layer (2a) is wire packing layer.
4. low-temperature methanol washing tail-gas cleaning system according to claim 1, is characterized in that: described desulfurizing agent packing layer (3c) is iron system desulfurizing agent packing layer.
5. low-temperature methanol washing tail-gas cleaning system according to any one of claim 1-4, it is characterized in that: the pipeline that the gas outlet (3d) of described dry desulfurizing tower (3) is connected with emptying cylinder (4) is also provided with emptying arm (6) and looped pipeline (7) on the spot, and described looped pipeline (7) is connected with the drain pipe on the liquid outlet (3e) of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555932.8U CN204220027U (en) | 2014-09-26 | 2014-09-26 | Low-temperature methanol washing tail-gas cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555932.8U CN204220027U (en) | 2014-09-26 | 2014-09-26 | Low-temperature methanol washing tail-gas cleaning system |
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| Publication Number | Publication Date |
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| CN204220027U true CN204220027U (en) | 2015-03-25 |
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| CN201420555932.8U Active CN204220027U (en) | 2014-09-26 | 2014-09-26 | Low-temperature methanol washing tail-gas cleaning system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169879A (en) * | 2015-09-22 | 2015-12-23 | 中石化宁波工程有限公司 | Coked tail gas processing method |
| CN112191046A (en) * | 2020-09-27 | 2021-01-08 | 成都国化环保科技有限公司 | Acidolysis tail gas desulfurization system and method |
-
2014
- 2014-09-26 CN CN201420555932.8U patent/CN204220027U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169879A (en) * | 2015-09-22 | 2015-12-23 | 中石化宁波工程有限公司 | Coked tail gas processing method |
| CN112191046A (en) * | 2020-09-27 | 2021-01-08 | 成都国化环保科技有限公司 | Acidolysis tail gas desulfurization system and method |
| CN112191046B (en) * | 2020-09-27 | 2022-04-22 | 成都国化环保科技有限公司 | Acidolysis tail gas desulfurization system and method |
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