CN216799356U - Chlorosulfonic acid production tail gas treatment system - Google Patents
Chlorosulfonic acid production tail gas treatment system Download PDFInfo
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- CN216799356U CN216799356U CN202220236476.5U CN202220236476U CN216799356U CN 216799356 U CN216799356 U CN 216799356U CN 202220236476 U CN202220236476 U CN 202220236476U CN 216799356 U CN216799356 U CN 216799356U
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Abstract
The utility model belongs to the field of chlorosulfonic acid production, and relates to a chlorosulfonic acid production tail gas treatment system, which comprises: the system comprises an acid washing tower, a first water washing tower, a second water washing tower, a primary alkali absorption tower and a secondary alkali absorption tower; the acid washing tower is sequentially connected with the first water washing tower, the second water washing tower, the first-stage alkali absorption tower and the second-stage alkali absorption tower. The system of the utility model can thoroughly treat the tail gas and has the advantage of environmental protection. The system can oxidize sodium hypochlorite, and solves the problem of brine treatment.
Description
Technical Field
The utility model belongs to the field of chlorosulfonic acid production, and particularly relates to a chlorosulfonic acid tail gas treatment system.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
Chlorosulfonic acid is produced, sulfur trioxide and hydrogen chloride are synthesized in a synthesis tower, if available chlorine in the hydrogen chloride reaches a certain degree, exhaust gas is easy to be exhausted to exceed the standard, and although the available chlorine is treated in the prior art, the produced brine cannot be treated, so that water body pollution is easy to occur.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a tail gas treatment system for chlorosulfonic acid production, which can thoroughly treat tail gas and has the advantage of environmental protection.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
in a first aspect of the present invention, there is provided a chlorosulfonic acid production tail gas treatment system, comprising: the system comprises an acid washing tower, a first water washing tower, a second water washing tower, a primary alkali absorption tower and a secondary alkali absorption tower; the acid washing tower is sequentially connected with the first water washing tower, the second water washing tower, the first-stage alkali absorption tower and the second-stage alkali absorption tower.
The utility model has the beneficial effects that:
(1) the system of the utility model can thoroughly treat the tail gas and has the advantage of environmental protection.
(2) The system can oxidize sodium hypochlorite, and solves the problem of brine treatment.
(3) The device has the advantages of simple structure, convenience in operation, low cost, universality and easiness in large-scale production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic diagram of a chlorosulfonic acid production tail gas treatment system according to one or more embodiments of the present invention.
In the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
the system comprises a pickling tower 1, a first washing tower 2, a second washing tower 3, a first-stage alkali absorption tower 4, a second-stage alkali absorption tower 5, a chimney 6, hydrogen peroxide 7, a first circulating pump 8 and a second circulating pump 9.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
As described in the background art, in order to realize the treatment of tail gas in the chlorosulfonic acid production, the utility model provides a method for treating tail gas in the chlorosulfonic acid production, which comprises an acid washing tower, a water washing tower, a primary alkali absorption tower and a secondary alkali absorption tower which are sequentially connected.
Furthermore, the primary alkali absorption tower adopts the mode that hydrogen peroxide is added periodically to oxidize the mother liquor in the tower.
Furthermore, the device also comprises a chimney, and the chimney is connected with an exhaust port of the secondary alkali absorption tower. The chimney is used for discharging the treated tail gas to the high altitude.
In some embodiments, the primary alkali absorber is FRP.
In some embodiments, the hydrogen peroxide concentration is 5-10%.
In some embodiments, the hydrogen peroxide addition is performed in an intermittent addition manner.
In some embodiments, a baffle is arranged inside the secondary alkali absorption tower to trap water drops.
In some embodiments, the first-stage alkali absorption tower is further connected with a first circulating pump to realize circulation of materials in the alkali absorption tower and improve the utilization rate of chemical reagents.
In some embodiments, the secondary caustic absorption column is further connected to a second circulation pump.
In some embodiments, the gas inlet of the acid wash tower is connected to a tail gas exhaust line of the chlorosulfonic acid production system.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the utility model and not limiting.
Example 1
As shown in figure 1, the tail gas treatment system for chlorosulfonic acid production comprises an acid washing tower 1, a water washing tower, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5 which are sequentially connected. The acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
Tail gas from a chlorosulfonic acid synthesis tower enters an acid washing tower 1, the tail gas sequentially enters a water washing tower after absorbing sulfur trioxide by 98% sulfuric acid, the water washing tower is divided into two stages (a first water washing tower 2 and a second water washing tower 3) to remove hydrogen chloride, the tail gas enters a primary alkali absorption tower 4 and a secondary alkali absorption tower 5, effective chlorine and trace hydrogen chloride are removed by caustic soda, the tail gas is discharged through a chimney 6, sodium hypochlorite generated in the primary alkali absorption tower 4 is oxidized by hydrogen peroxide 7, and therefore the sodium hypochlorite in circulating mother liquor of the primary alkali absorption tower 4 is removed.
Example 2
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
Example 3
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
The primary alkali absorption tower 4 is also connected with a hydrogen peroxide storage tank.
Example 4
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
And the exhaust port of the secondary alkali absorption tower 5 is connected with a chimney 6.
Example 5
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
The first-stage alkali absorption tower 4 is made of FRP materials.
Example 6
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
The concentration of the hydrogen peroxide is 5-10%.
Example 7
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
The first-stage alkali absorption tower 4 is also connected with a first circulating pump 8.
Example 8
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
The secondary alkali absorption tower 5 is also connected with a second circulating pump 9.
Example 9
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
The hydrogen peroxide 7 is added in an intermittent adding mode.
Example 10
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
And a baffling baffle is arranged in the secondary alkali absorption tower 5. The specific arrangement of the baffle is not particularly limited in this application, and a commercially available alkali absorption tower with a baffle may be used.
Example 11
A chlorosulfonic acid production tail gas treatment system comprises: the system comprises an acid washing tower 1, a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5; the acid washing tower 1 is sequentially connected with a first water washing tower 2, a second water washing tower 3, a primary alkali absorption tower 4 and a secondary alkali absorption tower 5.
And the air inlet of the acid cleaning tower 1 is connected with a tail gas discharge pipeline of a chlorosulfonic acid production system.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A chlorosulfonic acid production tail gas treatment system is characterized by comprising: the system comprises an acid washing tower, a first water washing tower, a second water washing tower, a primary alkali absorption tower and a secondary alkali absorption tower; the acid washing tower is sequentially connected with the first water washing tower, the second water washing tower, the first-stage alkali absorption tower and the second-stage alkali absorption tower.
2. The chlorosulfonic acid production tail gas treatment system of claim 1, wherein the primary alkali absorber is further connected to a hydrogen peroxide storage tank.
3. The system of claim 1, wherein the exhaust of the secondary alkali absorber is coupled to a stack.
4. The system for treating tail gas generated in chlorosulfonic acid production of claim 1, wherein the primary alkali absorption tower is made of FRP material.
5. The chlorosulfonic acid production tail gas treatment system of claim 2, wherein the hydrogen peroxide storage tank contains hydrogen peroxide at a concentration of 5-10%.
6. The chlorosulfonic acid production tail gas treatment system of claim 5, wherein the hydrogen peroxide addition is performed in an intermittent addition manner.
7. The chlorosulfonic acid production tail gas treatment system of claim 1 wherein the primary alkali absorber is further coupled to a first circulation pump.
8. The chlorosulfonic acid production tail gas treatment system of claim 1 wherein the secondary caustic absorption tower is further coupled to a second circulation pump.
9. The system for treating tail gas generated in chlorosulfonic acid production of claim 1, wherein a baffle is arranged inside the secondary alkali absorption tower.
10. The system for treating tail gas from chlorosulfonic acid production of claim 1, wherein the gas inlet of the acid wash tower is connected to a tail gas exhaust line of the chlorosulfonic acid production system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220236476.5U CN216799356U (en) | 2022-01-27 | 2022-01-27 | Chlorosulfonic acid production tail gas treatment system |
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| CN202220236476.5U CN216799356U (en) | 2022-01-27 | 2022-01-27 | Chlorosulfonic acid production tail gas treatment system |
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| CN216799356U true CN216799356U (en) | 2022-06-24 |
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| CN202220236476.5U Active CN216799356U (en) | 2022-01-27 | 2022-01-27 | Chlorosulfonic acid production tail gas treatment system |
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