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A method and device for treating organic waste gas

A technology of organic waste gas and waste gas, applied in separation methods, chemical instruments and methods, waste fuels, etc., can solve problems such as secondary pollution, and achieve the effects of increasing mechanical strength, high packing strength, and thinning thickness

Active Publication Date: 2017-11-10
东莞市生态环境技术中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and device for treating organic waste gas, which integrates spray absorption, catalytic decomposition and microbial decomposition technology, solves the problem of secondary pollution, has the advantages of simple operation and maintenance, and high purification efficiency , low operating costs, etc., especially suitable for the treatment of organic waste gas in the case of low and medium concentrations

Method used

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  • A method and device for treating organic waste gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A method for treating organic waste gas, comprising the steps of:

[0051] Step a: Pass the organic waste gas into the packing absorption tower 1, use the spray head to spray the spray liquid on the organic waste gas, and the spray liquid absorbs the organic pollutants in the organic waste gas;

[0052] Step b: The organic waste gas sprayed in step a passes upwards through the packing layer 12 of the low-resistance packing, and is secondarily absorbed by the spray liquid sprayed downwards to obtain a gas-liquid mixture; the packing layer 12 of the step b is Multi-faceted hollow ball packing.

[0053] And the spray liquid at the bottom of the packed absorption tower is catalyzed and oxidized by the catalytic biochemical reactor 3, and the overflow liquid formed by microbial decomposition passes through the packing layer 12 and falls back to the bottom of the packed absorption tower 1. The catalytic biochemical reactor 3 is provided with biological Filler to decompose or...

Embodiment 2

[0075] The difference between this embodiment and Embodiment 1 is that: the packing layer 12 in step b of this embodiment is a stepped ring packing. The suspended biological filler 34 includes a strip-shaped far-infrared biological filler 341 and a soft filler 344 . The transition metal oxide is cobalt metal oxide, and the natural mineral material is expanded vermiculite.

[0076] The spray width of the first shower head 21 is 60°, the position of the first shower head 21 does not exceed the central axis of the packed absorption tower 1, the spray width of the second shower head 22 is 90°, and the second spray head 22 has a spray width of 90°. The spray range of the head 22 covers the surface of the packing layer 12, and the spray liquid-gas ratio of the first shower head 21 and the second shower head 22 is 5 L / m 3 .

[0077] The rest of the content of this embodiment is the same as that of Embodiment 1 and will be repeated here.

Embodiment 3

[0079] The difference between this embodiment and Embodiment 1 is that: the packing layer 12 in step b of this embodiment is a Pall ring packing. The suspended biological filler 34 includes a strip-shaped far-infrared biological filler 341 and a semi-soft filler 343 . The transition metal oxide is molybdenum metal oxide, and the natural mineral material is a mixture of bentonite and diatomite at a mass ratio of 1:1.

[0080] The catalytic biochemical reactor 3 is fed with cultured and domesticated dominant microorganisms, and the microorganisms oxidize and degrade the organic matter absorbed by spraying.

[0081] The spray width of the first spray head 21 is 80°, the position of the first spray head 21 is no more than the central axis of the packed absorption tower 1, the spray width of the second spray head 22 is 100°, and the second spray head 22 has a spray width of 100°. The spray range of the head 22 covers the surface of the packing layer 12, and the spray liquid-gas ra...

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Abstract

The invention relates to the technical field of organic exhaust gas recovery processing, particularly a method and a device for treating organic exhaust gas. The method for treating organic exhaust gas comprises the following steps: introducing the organic exhaust gas into a packed absorption column, and spraying the organic exhaust gas in the forward direction by using a spray header; passing the sprayed exhaust gas upward through a packing layer and secondarily absorbing the exhaust gas with a spray liquid which is downwardly sprayed to obtain a gas-liquid mixture; carrying out catalytic oxidation and microbial decomposition on the spray liquid through a catalytic biochemical reactor to form overflow liquor, wherein the overflow liquor passes through the packing layer and falls back to the bottom of the packed absorption column, so that the organic matters in the spray liquid are decomposed into CO2 and H2O or converted into small molecular substances; and demisting the gas-liquid mixture which is obtained after the spraying and absorption by the spray liquid and then discharging the mixture out of the packed absorption column. The method for treating organic exhaust gas integrates spraying and absorption, catalytic decomposition and microbial decomposition, can synchronously purify the organic exhaust gas and the spray liquid, and has the advantages of being simple and convenient to operate and high in purification efficiency.

Description

technical field [0001] The invention relates to the technical field of organic waste gas recovery and treatment, in particular to a method and device for treating organic waste gas. Background technique [0002] In recent years, with the development of the economy, various industries such as chemicals, coatings, furniture, toys, electronics, and spraying have developed rapidly. At the same time, a large amount of industrial organic waste gas has been discharged into the atmosphere, which seriously affects the quality of the atmospheric environment and brings harm to human health. come to harm. At present, there are many technologies used to treat organic waste gas, such as activated carbon adsorption method, combustion method, absorption method, plasma method, ultraviolet method and biological method, etc., each treatment method has certain applicability, and there are also Each has its own limitations, and the exhaust gas composition of different emission sources is also v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14B01D53/18B01D53/74
CPCY02A50/20Y02E50/30
Inventor 邓杰帆
Owner 东莞市生态环境技术中心
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