Method for treating chlorohydrocarbon-containing gas by low-temperature plasma

A low-temperature plasma and plasma technology, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, to achieve the effects of mild reaction conditions, short process, and simple process

Inactive Publication Date: 2013-09-11
BEIHANG UNIV
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the application of low-temperature plasm

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for treating chlorohydrocarbon-containing gas by low-temperature plasma
  • Method for treating chlorohydrocarbon-containing gas by low-temperature plasma

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The plasma reactors in the low-temperature plasma unit are connected in parallel, and the low-temperature plasma unit is connected to the activated carbon adsorption unit. The exhaust gas containing chlorinated hydrocarbons enters the plasma reactor through the induced draft fan. The high-voltage power supply is turned on and the applied voltage is adjusted. The fixed injection energy is 100J / L, for waste gas containing methyl chloride, vinyl chloride, carbon tetrachloride, when the initial concentration is 100mg / m 3 , when the waste gas flow rate is 100L / min, and the waste gas humidity is 20%, after being treated by two-stage purification units, the removal rate of each chlorinated hydrocarbon can reach more than 98%.

Embodiment 2

[0027] The plasma reactor in the low-temperature plasma unit is connected in parallel, and the low-temperature plasma unit is connected to the activated carbon adsorption unit. The exhaust gas enters the plasma reactor through the induced draft fan, the high-voltage power supply is turned on and the applied voltage is adjusted. The fixed injection energy is 100J / L. For Waste gas containing methyl chloride, vinyl chloride, carbon tetrachloride, when the initial concentration is 500mg / m 3 , when the waste gas flow rate is 150L / min, and the waste gas humidity is 20%, after the two-stage unit purification treatment, the removal rate of each chlorinated hydrocarbon in the waste gas can reach 95%. Under the same conditions, adjust the applied voltage of the high-voltage power supply, increase the injection energy to 150J / L, and the removal rate of each chlorinated hydrocarbon can reach more than 98%.

Embodiment 3

[0029] The plasma reactors in the low-temperature plasma unit are connected in parallel, and the low-temperature plasma unit is connected to the activated carbon adsorption unit. The exhaust gas enters the plasma reactor through the induced draft fan. Turn on the high-voltage power supply and adjust the applied voltage. The fixed injection energy is 100J / L. Chloromethane, vinyl chloride, carbon tetrachloride, chloroform, 1,1,1-trichloroethane, 4-chlorophenol waste gas, when the initial concentration is 1000mg / m 3 , when the exhaust gas flow rate is 150L / min, and the exhaust gas humidity is 20%, after the two-stage unit purification treatment, the removal rate of each chlorinated hydrocarbon in the exhaust gas is 90%. Under the same conditions, only the connection mode between the reactors in the low-temperature plasma unit is changed, and the four plasma reactors in the unit are connected in series. After two-stage unit purification treatment, the removal rate of each chlorinat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for treating chlorohydrocarbon-containing gas by a low-temperature plasma, and belongs to the technical field of waste gas treatment. The method comprises the following steps of: under the action of an induced draft fan, the chlorohydrocarbon-containing waste gas is oxidized by a low-temperature plasma unit and then is discharged into the after meeting a standard; or under the action of the induced draft fan, the chlorohydrocarbon-containing waste gas is sequentially oxidized by the low-temperature plasma unit and adsorbed by an active carbon adsorption unit and then is discharged into the air after meeting the standard. The invention provides a method for effectively removing the low-concentration chlorohydrocarbon-containing industrial waste gas or indoor air pollution at normal temperature and normal pressure. The method has the advantages of mild reaction condition, short flow, simple technology, simplicity in operation, small investment, and economical and high-efficiency performance.

Description

technical field [0001] The invention relates to a treatment method for industrial waste gas containing chlorinated hydrocarbons and indoor air, in particular to a method for purifying industrial waste gas containing chlorinated hydrocarbons and indoor air by using low-temperature plasma technology. Background technique [0002] As an important organic solvent, chemical raw material and intermediate, chlorinated hydrocarbons are widely used in chemical, pharmaceutical, pesticide, leather and other industries to produce plastics, pesticides and refrigerants. However, in the process of production and use, it will lead to the generation of organic waste gas of chlorinated hydrocarbons, and it will also cause chlorinated hydrocarbons to enter the indoor environment, which will not only cause persistent and cumulative effects on human health and ecosystems, but also destroy the ozone layer. Therefore, The treatment of chlorinated hydrocarbon industrial waste gas and indoor air has...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D53/76B01D53/70
Inventor 曾小岚高倩朱天乐
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap