A microwave catalysis-biochemical vocs emission reduction combined equipment

A technology of microwave catalysis and combined equipment, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve problems such as secondary pollution, and achieve the effects of no secondary pollution, high purification efficiency, and small footprint

Inactive Publication Date: 2018-11-16
东莞市环境科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of microwave catalytic degradation of VOCs, intermediate products such as aldehydes, ketones, acids and esters will be produced, causing secondary pollution

Method used

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  • A microwave catalysis-biochemical vocs emission reduction combined equipment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] See figure 1 , a combination of microwave catalysis-biochemical VOCs emission reduction equipment, including a microwave catalysis reaction device and a biochemical reactor arranged in sequence, the microwave catalysis reaction device includes a catalyst layer 1 arranged inside it for exhaust gas to pass through, for heating The microwave launcher 2 of the catalyst layer 1, the catalytic air inlet 3 for the exhaust gas to enter the microwave catalytic reaction device, and the catalytic exhaust port 4 for the exhaust gas to flow out. The biochemical reactor is provided with a biological purification mechanism. There is a biochemical air inlet 5 connected with the catalytic exhaust port 4 and a biochemical air outlet 6 for gas to flow out.

[0036] Wherein, the microwave catalytic reaction device further includes a resonant cavity 7, and the size of the circular section of the resonant cavity 7 gradually decreases from the middle to both ends.

[0037] Wherein, the catal...

Embodiment 2

[0057] See figure 1 , the difference between this embodiment and embodiment 1 is:

[0058] Wherein, the solid catalyst used in the catalyst layer 1 is a mixture of metal oxide, silicon carbide and three-dimensional graphene with a mass ratio of 2:1:2; the metal oxide is an oxide of cobalt, copper, iron, nickel A mixture composed of a mass ratio of 1:2:2:1.

[0059] Wherein, the oxidizing agent adding device 10 of this embodiment does not add an oxidizing agent.

[0060] Wherein, the eluted bacterial layer is a mixed colony layer composed of Pseudomonas putida, Bacillus and Staphylococcus with a colony density ratio of 2:2.5:3.

[0061] Wherein, the drip filter layer is a mixed colony layer composed of the genus Leather, Trichoderma and Paecilomyces with a colony density ratio of 1:2:3.

[0062] Wherein, the third attachment filler is a hydrophilic sponge loaded with graphene and having far-infrared radiation and magnetism.

[0063] Wherein, the filter bacteria layer is a m...

Embodiment 3

[0068] See figure 1 , the difference between this embodiment and embodiment 1 is:

[0069]Wherein, the solid catalyst used in the catalyst layer 1 is a mixture of metal oxide, silicon carbide and three-dimensional graphene with a mass ratio of 2:3:5; the metal oxide is an oxide of cobalt, copper, iron, nickel A mixture composed of a mass ratio of 1:3:5:1.

[0070] Wherein, the oxidizing agent adding device 10 of this embodiment does not add an oxidizing agent.

[0071] Wherein, the elution bacteria layer is a mixed colony layer composed of Pseudomonas putida, Bacillus and Staphylococcus with a colony density ratio of 2:3:4.

[0072] Wherein, the trickle-filtered bacteria layer is a mixed colony layer composed of the genus Leather, Trichoderma and Paecilomyces with a colony density ratio of 1:3:4.

[0073] Wherein, the filter bacteria layer is a mixed colony layer composed of Paecilomyces, Mucor, Trametes and Burkholderia with a colony density ratio of 1:2:3.

[0074] Among...

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Abstract

The invention relates to the technical field of waste gas treatment, in particular to emission-reduction combination equipment for microwave catalysis and biochemical treatment of VOCs (volatile organic chemicals). The emission-reduction combination equipment comprises a microwave catalytic reaction device and a biochemical reactor which are sequentially arranged, wherein the microwave catalytic reaction device comprises a catalyst layer which is arranged inside and allows waste gas to pass, a microwave emitter used for heating the catalyst layer, a catalysis gas inlet allowing waste gas to enter the microwave catalytic reaction device and a catalysis gas exhaust port allowing the waste gas to flow out; a biological purification mechanism is arranged in the biochemical reactor, and a biochemical gas inlet connected with the catalysis gas exhaust port and a biochemical gas exhaust port allowing gas to flow out are formed in the biochemical reactor. VOCs are primarily purified and treated and degraded through the microwave catalytic reaction device, harmful intermediate products generated during primary purification and treatment are purified and treated through the biochemical reactor, the purification effect is good, thorough purification and treatment are realized, and no secondary pollution is caused.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a microwave catalysis-biochemical VOCs emission reduction combined equipment. Background technique [0002] VOCs refers to waste gas containing volatile organic compounds. At present, there are many technologies used to treat VOCs in waste gas of volatile organic compounds. Commonly used methods for VOCs emission reduction technologies include adsorption method, absorption method, condensation method, membrane separation method, and pulse corona method. , photocatalytic oxidation, plasma purification, combustion, biological and catalytic oxidation. The first four methods are all physical methods, which have high operating costs and are prone to secondary pollution. Although the pulsed corona method, photocatalytic oxidation method and plasma purification method have good treatment efficiency for VOCs, the treatment capacity is small, the power requirements are high, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/75B01D53/84B01D53/86B01D53/44
CPCB01D53/44B01D53/75B01D53/84B01D53/8668B01D2251/95B01D2257/708B01D2259/806Y02A50/20
Inventor 黎雯邓杰帆何觉聪曾彩明王书杰谭伟红
Owner 东莞市环境科学研究所
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