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Exhaust gas treatment system

A waste gas treatment and tower body technology, applied in the direction of gas treatment, chemical/physical process, physical/chemical process catalyst, etc., can solve the problems of limited waste gas treatment capacity, waste gas treatment effect is difficult to meet the emission requirements, etc., to achieve low surface tension, Improve the treatment effect and prevent the effect of poisoning and inactivation

Inactive Publication Date: 2018-10-09
绍兴市鼎泰节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the treatment methods for waste gas mainly include water washing method, thermal combustion method and catalytic incineration method, but the treatment capacity of various methods for waste gas is limited, making it difficult to meet the emission requirements for the treatment effect of waste gas

Method used

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  • Exhaust gas treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of Cu-Mn-Ce composite catalyst:

[0043] (1) feed carbon dioxide into the first reactor, so that the pressure in the first reactor reaches the first preset pressure value 8MPa; then add copper nitrate, manganese nitrate, cerium nitrate in the first reactor And the mixed solution of absolute ethanol was heated up to 100°C while stirring.

[0044] Wherein, the molar ratio of copper nitrate, manganese nitrate and cerium nitrate is 0.2:0.5:1.

[0045](2) feed carbon dioxide into the second reactor so that the pressure in the second reactor reaches the second preset pressure value 7.9MPa; then add deionized water, citric acid in the second reactor The solution was mixed, and the temperature was raised to 100° C. while stirring.

[0046] (3) In step (2), the supercritical carbon dioxide that entrains the mixed solution of deionized water and citric acid is slowly passed into the first reactor, and the first reactor is stirred so that the deionized water Mix wel...

Embodiment 2

[0050] Preparation of Cu-Mn-Ce composite catalyst:

[0051] (1) In the first reactor, feed carbon dioxide, make the pressure in the first reactor reach the first preset pressure value 12MPa; Then add copper nitrate, manganese nitrate, cerium nitrate in the first reactor And the mixed solution of absolute ethanol was heated up to 130°C while stirring.

[0052] Wherein, the molar ratio of copper nitrate, manganese nitrate and cerium nitrate is 0.3:0.7:1.

[0053] (2) feed carbon dioxide into the second reactor so that the pressure in the second reactor reaches the second preset pressure value 11.7MPa; then add deionized water, citric acid in the second reactor The solution was mixed, and the temperature was raised to 130° C. while stirring.

[0054] (3) In step (2), the supercritical carbon dioxide that entrains the mixed solution of deionized water and citric acid is slowly passed into the first reactor, and the first reactor is stirred so that the deionized water fully mix ...

Embodiment 3

[0058] Preparation of Cu-Mn-Ce composite catalyst:

[0059] (1) feed carbon dioxide into the first reactor, so that the pressure in the first reactor reaches the first preset pressure value 15MPa; then add copper nitrate, manganese nitrate, cerium nitrate in the first reactor And the mixed solution of absolute ethanol is heated up to 160°C while stirring.

[0060] Wherein, the molar ratio of copper nitrate, manganese nitrate and cerium nitrate is 0.5:0.8:1.

[0061] (2) feed carbon dioxide into the second reactor so that the pressure in the second reactor reaches the second preset pressure value 14.5MPa; then add deionized water, citric acid in the second reactor The solution was mixed, and the temperature was raised to 160° C. while stirring.

[0062] (3) In step (2), the supercritical carbon dioxide of the mixed solution of deionized water and citric acid is slowly passed into the first reactor, and the first reactor is stirred so that the deionized water Mix well with ci...

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Abstract

The invention relates to an exhaust gas treatment system which comprises a bag-type dust collector, a water washing device, a drying device and a catalytic combustion device which are sequentially connected through pipelines. The water washing device comprises a washing tower, a circulating pump, a chemical feeding box and a chemical feeding pump, the washing tower comprises a tower body and a circulating liquid box arranged at the bottom of the tower body, at least one spraying component is arranged in the tower body and communicated with the circulating liquid box through the circulating pump, the circulating liquid box is communicated with the chemical feeding box through the chemical feeding pump, an adsorbing agent is arranged in the drying device and used for removing moisture in exhaust gas discharged from the washing tower, at least one catalyst bed layer is arranged in the catalytic combustion device along an exhaust gas flow direction, catalysts of the catalyst bed layers areCu-Mn-Ce composite catalysts, and the mole ratio of Cu, Mn to Ce in the Cu-Mn-Ce composite catalysts is (0.2-0.5):(0.5-0.8):1. According to the system, exhaust gas treatment effect can be greatly improved, and the degradation rate of ethyl acetate in the exhaust gas reaches 99.2%.

Description

technical field [0001] The invention relates to the technical field of exhaust gas treatment, in particular to an exhaust gas treatment system. Background technique [0002] Organic waste gas discharged from chemical industry, light industry, paint, printing and other industries is one of the main sources of air pollution. For example, organic waste gas emitted from paint and paint chemical production contains benzene, toluene, xylene, cresol, ethyl acetate, etc. Among them, ethyl acetate is very harmful to human health. Exposure to 400ppm will irritate the eyes, cause nausea, vomiting, damage the respiratory system, and inhibit the central nervous system and other symptoms. [0003] At present, the treatment methods for waste gas mainly include water washing method, thermal combustion method and catalytic incineration method, but the treatment capacity of various methods for waste gas is limited, making it difficult to meet the emission requirements for the treatment effect...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/72F23G7/07
CPCB01D53/261B01D53/72B01D53/78B01D2257/7022B01D2257/7027B01J23/002B01J23/8892B01J2523/00F23G7/07B01J2523/17B01J2523/72B01J2523/3712
Inventor 董新良
Owner 绍兴市鼎泰节能环保科技有限公司
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