A kind of chlorosulfonic acid production tail gas treatment system and treatment method
A technology of tail gas treatment and chlorosulfonic acid, which is applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of tail gas environmental protection not up to standard, chimney corrosion, surrounding environment impact, etc., achieve remarkable environmental protection effect and reduce corrosion Effect
Active Publication Date: 2021-07-30
聊城鲁西氯甲烷化工有限公司
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Problems solved by technology
The inventors found that this tail gas treatment method cannot effectively remove SO in the tail gas 2 Gas, the exhaust gas has the problem of not meeting the environmental protection standards, which is easy to affect the surrounding environment
Moreover, the vented tail gas after spraying with circulating water contains a large amount of water droplets, and the vented tail gas still contains acid gas. When it is discharged through the chimney, it is easy to form acid, which will corrode the inner wall of the chimney and affect the service life of the chimney.
Method used
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[0044] like figure 1As shown, a chlorosulfonic acid produces exhaust gas environmental treatment processes and devices, including sulfuric acid absorbing systems, hydrochloric acid absorbing systems, alkali absorbing systems, and exhaust gas buffer systems. The sulfuric acid absorbing system includes an exhaust gas, an outgoing tube line, a sulfate absorption tower, a sulfate absorption tower circulating pump. The sulfuric acid absorbing system is connected to the synthetic tower outlet pipeline. The tail gas of the chlorosulfonic acid is passed into the sulfate absorption tower along the gas phase pipe. The sulfuric acid absorbent column 1 is washed with 98-98.7% concentrated sulfuric acid by concentrated sulfuric acid. Retroflar contact in the filler layer, SO in the tail gas of chlorosulfonic acid 3 Be absorbed.
[0045] The hydrochloric acid absorbing system is composed of a first hydrochloric acid absorption tower 2, a second hydrochloric acid absorption tower, a first hydroc...
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The invention discloses a tail gas treatment system and treatment method for chlorosulfonic acid production. The gas inlet in the middle of the sulfuric acid absorption tower is connected to the tail gas source, and the bottom tower is filled with concentrated sulfuric acid. The first pump is connected with the spray structure; the gas inlet in the middle of the hydrochloric acid absorption tower is connected with the top gas outlet of the sulfuric acid absorption tower, and the bottom tower kettle of the hydrochloric acid absorption tower is filled with water, and the top is provided with a spray structure, and the bottom tower kettle The second pump is connected to the spray structure; the gas inlet in the middle of the alkali absorption tower is connected to the top outlet of the hydrochloric acid absorption tower, and the bottom of the alkali absorption tower is filled with lye, and the top is provided with a spray structure. The third pump is connected to the spray structure; the tail gas inlet and tail gas outlet of the tail gas buffer tank are both arranged on the top of the tail gas buffer tank, the tail gas inlet is connected to the top outlet of the alkali absorption tower, and the tail gas outlet is connected to the chimney through the fourth pump.
Description
Technical field [0001] The present invention belongs to the technical field of production exhaust gas treatment of chlorosulfonic acid, and specifically, a chlorosulfonic acid production exhaust gas treatment system and treatment method. Background technique [0002] The information disclosed in the background is only intended to increase the understanding of the overall background of the present invention, and is not necessarily considered to recognize or imply that the information is intended to be a prior art known to those of ordinary skill in the art. [0003] The production process of chlorosulfonic acid is generally chlorine and hydrogen delivered from the chlor-alkali system in the hydrogen chloride synthesis furnace to generate HCl, and HCl gas is delivered from the dry and sulfuric acid plant. 3 The gas and the gas returned by the coated tower directly enter the synthetic tower through the mixer, controlling the reaction temperature at 80-150 ° C, high temperature synth...
Claims
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IPC IPC(8): B01D53/78B01D53/68B01D53/50
CPCB01D53/18B01D53/50B01D53/68B01D53/78B01D2251/304B01D2252/10B01D2257/2045
Inventor 杨泽宝胥利
Owner 聊城鲁西氯甲烷化工有限公司