CN212283461U - Ethylene carbonate chlorination tail gas processing apparatus - Google Patents
Ethylene carbonate chlorination tail gas processing apparatus Download PDFInfo
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- CN212283461U CN212283461U CN202020257463.7U CN202020257463U CN212283461U CN 212283461 U CN212283461 U CN 212283461U CN 202020257463 U CN202020257463 U CN 202020257463U CN 212283461 U CN212283461 U CN 212283461U
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Abstract
The utility model relates to a preparation chlorinated ethylene carbonate technical field especially relates to a ethylene carbonate chlorination tail gas processing apparatus. The device comprises a chlorinated tail gas capturing tower, a tail gas reabsorption tower and a water delivery pump, wherein baffle plates are oppositely installed in the chlorinated tail gas capturing tower in a stepped mode, a chlorinated tail gas inlet is formed in one side of the lower end of the chlorinated tail gas capturing tower, a sprayer is installed on the upper portion of the inner side of the chlorinated tail gas capturing tower, the top end of the sprayer penetrates out of the chlorinated tail gas capturing tower and is provided with a spray water inlet, and a capturing tower tail gas outlet is further formed in the top end of the chlorinated tail gas capturing tower and is connected with the tail gas reabsorption tower; the tail gas reabsorption tower is characterized in that an adsorption layer is arranged on the inner wall of the tail gas reabsorption tower, a residual gas return port is arranged at the top end of the tail gas reabsorption tower, a cooling water jacket is fixedly connected to one side of the outer wall of the tail gas reabsorption tower, a cooling water inlet is arranged at the lower end of one side of the cooling water jacket, and a cooling water outlet is arranged at the upper end; the utility model has small change to the original chlorination process and the device, and the implementation process is relatively simple and convenient.
Description
Technical Field
The utility model relates to a preparation chlorinated ethylene carbonate technical field especially relates to a tail gas processing apparatus after ethylene carbonate chlorination.
Background
Vinyl chlorocarbonate (chloroethylene carbonate; chloroethylene carbonate), the chinese alias: 4-chloro-1, 3-dioxopentacyclo-2-one (4-chloro-1,3-dioxolan-2-one), density: 1.5g/cm3, boiling point: 237.3 ℃ (760mmHg), flash point: 148.3 ℃, vapor pressure: 0.0451mmHg (25 deg.C). The chloroethylene carbonate is mainly applied to the preparation of lithium battery electrolyte fluoroethylene carbonate and vinylene carbonate. The high-purity chloroethylene carbonate can also be directly used as a flame retardant additive of the lithium battery electrolyte, so that the cycle performance of the lithium battery electrolyte is improved, and the service life is prolonged.
The current process for producing Chlorinated Ethylene Carbonate (CEC) uses chlorine gas, i.e., Ethylene Carbonate (EC) reacts with chlorine gas to produce Chlorinated Ethylene Carbonate (CEC). A large amount of tail gas (mainly hydrogen chloride gas and residual chlorine gas) is generated in the reaction process of Ethylene Carbonate (EC) and chlorine gas, and environmental pollution is caused if the tail gas is not treated in time.
The prior art for treating tail gas generated in the chlorination process of ethylene carbonate adopts the modes of water washing and alkali washing. The technology is intermittent operation, the efficiency is low, tail gas cannot be completely treated, and environmental pollution can still be caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tail gas processing apparatus after ethylene carbonate chlorination overcomes prior art's is not enough, further improves the treatment effeciency of tail gas, reaches the zero release.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a vinyl carbonate chlorination tail gas treatment device comprises a chlorination tail gas capturing tower, a tail gas reabsorption tower and a water delivery pump, wherein baffle plates are oppositely installed in the chlorination tail gas capturing tower in a stepped mode, a chlorination tail gas inlet is formed in one side of the lower end of the chlorination tail gas capturing tower, a sprayer is installed on the upper portion of the inner side of the chlorination tail gas capturing tower, the top end of the sprayer penetrates out of the chlorination tail gas capturing tower and is provided with a spray water inlet, and the top end of the chlorination tail gas capturing tower is also provided with a capturing tower tail gas outlet and is connected with the tail gas reabsorption tower through a pipeline; the tail gas reabsorption tower is characterized in that an adsorption layer is arranged on the inner wall of the tail gas reabsorption tower, a residual gas return port is arranged at the top end of the tail gas reabsorption tower, a cooling water jacket is fixedly connected to one side of the outer wall of the tail gas reabsorption tower, a cooling water inlet is arranged at the lower end of one side of the cooling water jacket, and a cooling water outlet is arranged at the upper end;
the bottom of the chlorination tail gas trapping tower is provided with a water delivery pipe outlet, and the water delivery pipe outlet is connected with a water delivery pump through a pipeline.
The tail gas reabsorption tower is a graphite reabsorption tower.
The height of the adsorption layer is half of that of the tail gas reabsorption tower.
The utility model discloses a beneficial effect is: overcomes the defects of the prior art, further improves the efficiency of tail gas treatment, and has the advantages of high efficiency, no environmental pollution, simple process, easy control, continuous reaction and the like. The utility model has small change to the original chlorination process and the device, and the implementation process is relatively simple and convenient.
Drawings
Fig. 1 is a schematic diagram of the tail gas treatment device after chlorination of ethylene carbonate.
In the figure: in the figure: a comprises a chlorination tail gas capturing tower, a chlorination tail gas inlet 1, a baffle plate 2, a sprayer 3, a spray water inlet 4, a water pipe outlet 5 and a capturing tower tail gas outlet 6; a tail gas reabsorption tower B, an adsorption layer 10, a cooling water outlet 11, a residual gas return port 12, a cooling water inlet 13 and a cooling water jacket 16; c, a water delivery pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
All the electrical components in the present application are connected with the power supply adapted to the electrical components through a wire, and an appropriate controller and an appropriate encoder should be selected according to actual conditions to meet control requirements, and specific connection and control sequences should be obtained.
Example (b): please refer to the attached drawings of the specification, the present case is
A vinyl carbonate chlorination tail gas treatment device comprises a chlorination tail gas capturing tower A, a tail gas reabsorption tower B and a water delivery pump C, wherein a baffle plate 2 is installed in the chlorination tail gas capturing tower A in a relatively stepped mode, a chlorination tail gas inlet 1 is formed in one side of the lower end of the chlorination tail gas capturing tower A, a sprayer 3 is installed on the upper portion of the inner side of the chlorination tail gas capturing tower A, the top end of the sprayer 3 penetrates out of the chlorination tail gas capturing tower A and is provided with a spray water inlet 4, and the top end of the chlorination tail gas capturing tower A is further provided with a capturing tower tail gas outlet 6 and is connected with the tail gas reabsorption tower B through a; the inner wall of the tail gas reabsorption tower B is provided with an adsorption layer 10, and the tail gas reabsorption tower B is a graphite reabsorption tower. The top end of the tail gas reabsorption tower B is provided with a residual gas return port 12, wherein one side of the outer wall of the tail gas reabsorption tower B is fixedly connected with a cooling water jacket 16, the lower end of one side of the cooling water jacket 16 is provided with a cooling water inlet 13, and the upper end of the cooling water jacket is provided with a cooling water outlet 11; wherein the bottom of the chlorination tail gas trapping tower A is provided with a water delivery pipe outlet 5, and the water delivery pipe outlet 5 is connected with a water delivery pump C through a pipeline. Wherein the height of the adsorption layer 10 is half of the height of the tail gas reabsorption tower B.
The working process is as follows:
the treatment process is as follows: s1: chlorinated tail gas from a chlorination reactor continuously enters a capturing tower A through a chlorinated tail gas inlet 1, spray water continuously sprays from a sprayer 3 at the upper part of the chlorinated tail gas capturing tower to enter a baffle plate 2 and flow to the bottom of the capturing tower, and the spray water is discharged through a water delivery pump C connected with a water delivery pipe outlet 5.
S2: and the trapped tail gas enters the graphite reabsorption tower B from the chlorination tail gas outlet 6, cooling water enters the reabsorption tower jacket 16 from the cooling water inlet 13 to cool the graphite reabsorption tower, and the cooling water is discharged from the cooling water outlet 11. The cooled chlorinated tail gas enters the adsorption layer 10 of the re-absorption tower for advanced treatment. The residual gas treated by the reabsorption tower enters a chlorination kettle from a residual gas return port 12 for chlorination treatment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The vinyl carbonate chlorination tail gas treatment device comprises a chlorination tail gas capturing tower (A), a tail gas reabsorption tower (B) and a water delivery pump (C), and is characterized in that baffle plates (2) are installed in the chlorination tail gas capturing tower (A) in a relatively stepped mode, a chlorination tail gas inlet (1) is formed in one side of the lower end of the chlorination tail gas capturing tower (A), a sprayer (3) is installed on the upper portion of the inner side of the chlorination tail gas capturing tower (A), the top end of the sprayer (3) penetrates out of the chlorination tail gas capturing tower (A) and is provided with a spray water inlet (4), and a capturing tower tail gas outlet (6) is further formed in the top end of the chlorination tail gas capturing tower (A) and is connected with the tail gas reabsorption tower (B) through a pipeline; an adsorption layer (10) is arranged on the inner wall of the tail gas reabsorption tower (B), a residual gas return opening (12) is formed in the top end of the tail gas reabsorption tower (B), a cooling water jacket (16) is fixedly connected to one side of the outer wall of the tail gas reabsorption tower (B), a cooling water inlet (13) is formed in the lower end of one side of the cooling water jacket (16), and a cooling water outlet (11) is formed in the upper end of the cooling water jacket;
the bottom of the chlorination tail gas trapping tower (A) is provided with a water delivery pipe outlet (5), and the water delivery pipe outlet (5) is connected with a water delivery pump (C) through a pipeline.
2. The ethylene carbonate chlorination tail gas treatment device according to claim 1, wherein the tail gas reabsorption tower (B) is a graphite reabsorption tower.
3. The ethylene carbonate chlorination tail gas treatment device according to claim 1, wherein the height of the adsorption layer (10) is half of the height of the tail gas reabsorption tower (B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020257463.7U CN212283461U (en) | 2020-03-05 | 2020-03-05 | Ethylene carbonate chlorination tail gas processing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020257463.7U CN212283461U (en) | 2020-03-05 | 2020-03-05 | Ethylene carbonate chlorination tail gas processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011107A (en) * | 2021-11-18 | 2022-02-08 | 中建安装集团有限公司 | Novel device and method for continuously producing high-purity vinylene carbonate |
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2020
- 2020-03-05 CN CN202020257463.7U patent/CN212283461U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011107A (en) * | 2021-11-18 | 2022-02-08 | 中建安装集团有限公司 | Novel device and method for continuously producing high-purity vinylene carbonate |
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