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Chlorobenzene waste gas processing method

A technology for waste gas treatment and chlorobenzene, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation. It can solve the problems of secondary pollution and long treatment periods, and achieve low operating costs, small equipment footprint, and low investment. Effect

Inactive Publication Date: 2016-08-17
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for treating chlorobenzene waste gas in view of the problems of long treatment period and secondary pollution in the existing chlorobenzene treatment method

Method used

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  • Chlorobenzene waste gas processing method

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Effect test

Embodiment 1

[0026] like figure 1 Shown, under normal temperature, chlorobenzene waste gas (wherein the mass percentage of chlorobenzene is about 40%, and the total mass percentage of other organic matter is about 2%) enters in the catalytic oxidation tower by the effect of induced draft fan from the tower bottom of catalytic oxidation tower , the persulfate aqueous solution activated by the transition metal sulfate is sprayed from the top of the catalytic oxidation tower in a mist form through a nozzle, and contacts with the chlorobenzene waste gas. With cobalt sulfate as catalyst, the mass ratio of the amount of cobalt sulfate to the amount of chlorobenzene waste gas is 5:1, with sodium persulfate as oxidant, the mass ratio of the amount of sodium persulfate to the amount of chlorobenzene waste gas is 20:1, persulfuric acid The concentration of sodium aqueous solution is 10%, and the nozzle is the 8650 multi-head sprayer produced by Shanghai Zhanliu Machinery Equipment Co., Ltd. When ato...

Embodiment 2

[0030] Under normal temperature, chlorobenzene waste gas (wherein the mass percentage of chlorobenzene is about 10%, and the total mass percentage of other organic matter is about 2%) enters in the catalytic oxidation tower through the effect of induced draft fan from the tower bottom of catalytic oxidation tower, will transition The persulfate aqueous solution activated by metal sulfate is sprayed out from the top of the catalytic oxidation tower in mist form through the nozzle, and contacts with the waste gas of chlorobenzene. With cobalt sulfate as catalyst, the mass ratio of the amount of cobalt sulfate to the amount of chlorobenzene waste gas is 2:1, and sodium persulfate is used as the oxidant, and the mass ratio of the amount of sodium persulfate to the amount of chlorobenzene waste gas is 10:1. The concentration of sodium aqueous solution is 10%, and the nozzle is the 8650 multi-head sprayer produced by Shanghai Zhanliu Machinery Equipment Co., Ltd. When atomizing, the ...

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Abstract

The invention discloses a chlorobenzene waste gas processing method which comprises the following steps: at normal temperature, making chlorobenzene waste gas contact with an atomized transition metal sulfate-activated persulfate salt aqueous solution, and carrying out catalytic oxidation degradation processing reaction. The chlorobenzene waste gas processing method provided by the invention aims at the problems that a conventional chlorobenzene processing method has long processing cycle and has secondary pollution, can rapidly remove chlorobenzene waste gas, and degrades chlorobenzene into low-toxic even non-toxic harmless substances; and the method has the advantages of small occupation land of equipment used in the method, less investment, low operation cost, high degree of automation, simpliness and practicality.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a method for treating chlorobenzene waste gas. Background technique [0002] Chlorobenzene is an important chemical raw material, widely used in dyes, medicine, rubber, coatings and other fields. However, chlorobenzene is highly toxic and has a toxic effect on the human nervous system and internal organs. When the human body is exposed to the environment polluted by chlorobenzene compounds, it will absorb such compounds through inhalation, ingestion and skin absorption. It has an anesthetic effect on the central nervous system and is irritating to the skin and mucous membranes. High-concentration exposure can cause anesthesia symptoms , or even coma. [0003] At present, the treatment methods of p-chlorobenzene waste gas include absorption method, adsorption method, combustion method, biological method and so on. The absorption method generally uses ethanol, ether,...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/78B01D53/70
CPCB01D53/75B01D53/79B01D53/8662B01D2251/106B01D2251/304B01D2251/306B01D2251/404B01D2251/604B01D2251/608B01D2253/102
Inventor 马继飞姚剑刘忠英凡思军谢雷东陈堃李玉兰侯惠奇
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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