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Heat storing type thermal oxidizing technology for treating VOCs (volatile organic chemcials)

A thermal oxidation and heat storage technology, which is applied in the direction of incinerators, lighting and heating equipment, chemical instruments and methods, etc., to achieve the effects of improving decomposition efficiency, wide application range, and improving work efficiency

Inactive Publication Date: 2018-07-24
江苏中车云汇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is a kind of regenerative thermal oxidation process for processing VOCs, to solve existing technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A regenerative thermal oxidation process for treating VOCs, the steps are as follows:

[0019] (1) Mix the collected high-concentration waste gas and low-concentration waste gas to form mixed waste gas, which is transported to the cyclone dust collector through the pipeline for dust removal. The dust removal time is 2s and the frequency is 5400HZ. Separated from the air flow and collected on the wall of the container, thus falling into the ash hopper;

[0020] (2) Then, the dust-removed exhaust gas is sent from the bottom to the first spray tank in the biological scrubber through the pipeline for biological scrubbing. The flow ratio of spray liquid and exhaust gas used in the scrubber is 1:210, and the residence time is 12s ;

[0021] (3) The gas phase part of the exhaust gas washed in step (2) is raised to the adsorption device, and after the adsorption is completed, it rises to the first packing layer in the middle of the washing tower, mixed with natural gas, and tr...

Embodiment 2

[0026] A regenerative thermal oxidation process for treating VOCs, the steps are as follows:

[0027] (1) Mix the collected high-concentration waste gas and low-concentration waste gas to form mixed waste gas, which is transported to the cyclone dust collector through the pipeline for dust removal. The dust removal time is 10s and the frequency is 6000HZ. Separated from the air flow and collected on the wall of the container, thus falling into the ash hopper;

[0028] (2) The dust-removed exhaust gas is sent from the bottom to the first spray tank in the biological scrubber through the pipeline for biological scrubbing. The flow ratio of spray liquid and exhaust gas used in the scrubber is 1:200, and the residence time is 20s ;

[0029] (3) The gas phase part of the exhaust gas washed in step (2) is raised to the adsorption device, and after the adsorption is completed, it rises to the first packing layer in the middle of the washing tower, mixed with natural gas, and transpo...

Embodiment 3

[0034] A regenerative thermal oxidation process for treating VOCs, the steps are as follows:

[0035] (1) Mix the collected high-concentration waste gas and low-concentration waste gas to form mixed waste gas, which is transported to the cyclone dust collector through the pipeline for dust removal. The dust removal time is 30s and the frequency is 5000HZ. Separated from the air flow and collected on the wall of the container, thus falling into the ash hopper;

[0036] (2) The dust-removed exhaust gas is sent from the bottom to the first spray tank in the biological scrubber through the pipeline for biological scrubbing. The flow ratio of spray liquid and exhaust gas used in the scrubber is 1:220, and the residence time is 5s ;

[0037] (3) The gas phase part of the exhaust gas washed in step (2) is raised to the adsorption device, and after the adsorption is completed, it rises to the first packing layer in the middle of the washing tower, mixed with natural gas, and transpor...

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PUM

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Abstract

The invention relates to a heat storing type thermal oxidizing technology for treating VOCs (volatile organic compounds). The technology comprises the steps of collecting, conveying and dedusting, primary washing, primary heating and oxidative decomposition, secondary washing, secondary heating and oxidative decomposition, third washing, drying and discharging. According to the technology, the structure is simple; the occupied area is small; the recycling is realized; the safety and the stability are ensured; natural gas and waste gas are combined to combust, so that the energy consumption issaved, and the working efficiency is improved; and moreover, the waste heat after combustion can be used in other projects, so that the cost is saved; few catalysts are used for catalytic oxidation decomposition, thus the decomposing efficiency is improved; the spraying filtering and decomposition combustion are carried out in a plurality of times, so that the purifying rate is up to 99%; pipelineis used for conveying in the whole process, thus secondary pollution is avoided, and the applicable scope is wide.

Description

technical field [0001] The invention specifically relates to a regenerative thermal oxidation process for treating VOCs. Background technique [0002] As a characteristic pollutant in the petrochemical industry, VOCs mainly come from organized emissions, fugitive emissions from storage tanks, leakage from production equipment, solvent volatilization, etc. The existing nursing technologies include chemical oxidation, physical separation, and biological methods, each with its own characteristics Features and limitations, most of them adopt chemical oxidation method, which not only has high efficiency, but also will not be volatilized again. However, as far as the current regenerative oxidation process is concerned, the investment cost is high and the scope of application is small, so a new technology is urgently needed to improve . Contents of the invention [0003] The object of the present invention is a regenerative thermal oxidation process for treating VOCs, so as to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/07F23G7/06F23J15/04B01D53/78
CPCF23G7/07B01D53/78F23G7/065F23G2201/10F23G2201/702F23G2204/103F23G2209/14F23J15/04F23J2217/50
Inventor 王晓庆
Owner 江苏中车云汇科技有限公司
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