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Method of processing VOCs waste gas through catalytic oxidation of ionic modified OH-base light beams

A photocatalytic oxidation and ion modification technology, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems of multiple air pollution, secondary pollution, low efficiency of odorous and odorous exhaust gas, etc., to avoid multiple pollution, The effect of improving efficiency

Inactive Publication Date: 2018-12-21
天津市远卓环境工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] VOCs exhaust gas treatment usually adopts the traditional single photo-oxygen catalytic oxidation method, however, the traditional single photo-oxygen catalytic oxidation method exists to remove VOC S The problem of low efficiency and unsatisfactory effect of malodorous and odorous exhaust gas, and the removal of VOC S Secondary pollution is easy to occur in the waste gas process, causing multiple pollution to the air

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Ion-modified OH-based light beam catalytic oxidation VOCs exhaust gas treatment method, the steps are:

[0031] a. VOCs exhaust gas enters the collection system through the air inlet, and after collection, it enters the water washing module in the treatment modular equipment. After being sprayed with atomized water, VOCs exhaust gas and atomized water are in contact with each other in a gas-liquid reverse way to remove VOCs in time Solid particles in exhaust gas;

[0032] b. The VOCs waste gas washed with water in step a passes through the demister to remove the water vapor therein, and the droplet concentration of the flue gas at the outlet of the demister is 70mg / Nm 3 , the VOCs exhaust gas flow rate is 2.5m / s, and then enters the photocatalytic oxidation generation module;

[0033] c. The nano-wave band light emitter in the photocatalytic oxidation generation module emits photo-oxygen nano-band light. The number of nano-wave band light emitters is 4. The photo-oxyge...

Embodiment 2

[0037] Ion-modified OH-based light beam catalytic oxidation VOCs exhaust gas treatment method, the steps are:

[0038] a. VOCs exhaust gas enters the collection system through the air inlet, and after collection, it enters the water washing module in the treatment modular equipment. After being sprayed with atomized water, VOCs exhaust gas and atomized water are in contact with each other in a gas-liquid reverse way to remove VOCs in time Solid particles in exhaust gas;

[0039] b. The VOCs exhaust gas washed in step a passes through the demister to remove the water vapor therein, and the droplet concentration of the flue gas at the outlet of the demister is 45mg / Nm 3 , the VOCs exhaust gas flow rate is 3.5m / s, and then enters the photocatalytic oxidation generation module;

[0040] c. The nano-wave band light emitter in the photocatalytic oxidation generation module emits photo-oxygen nano-band light. The number of nano-wave band light emitters is 4. The photo-oxygen nano-ba...

Embodiment 3

[0044] Ion-modified OH-based light beam catalytic oxidation VOCs exhaust gas treatment method, the steps are:

[0045] a. VOCs exhaust gas enters the collection system through the air inlet, and after collection, it enters the water washing module in the treatment modular equipment. After being sprayed with atomized water, VOCs exhaust gas and atomized water are in contact with each other in a gas-liquid reverse way to remove VOCs in time Solid particles in exhaust gas;

[0046]b. The VOCs exhaust gas washed in step a passes through the demister to remove the water vapor therein, and the droplet concentration of the flue gas at the outlet of the demister is 40mg / Nm 3 , the VOCs exhaust gas flow rate is 5.5m / s, and then enters the photocatalytic oxidation generation module;

[0047] c. The nano-wave band light emitter in the photocatalytic oxidation generation module emits photo-oxygen nano-band light. The number of nano-wave band light emitters is 4. The photo-oxygen nano-ban...

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Abstract

The invention provides a method for processing VOCs waste gas through catalytic oxidation of ionic modified OH-base light beams. The method comprises the steps that the VOCs waste gas enters a water washing module in processing modularized equipment after being collected; the VOCs waste gas enters a photocatalytic oxidation generation module; a nano wave band optical emitter emits photo-oxidized nano wave band light to conduct catalytic oxidation; the VOCs waste gas is transformed to be final products of carbon dioxide and water at the perfect state under the double effect of OH base generatedby O3 and an ionic modified material; and the above steps are repeated and circulated if the gas is detected to be unqualified, and the gas detected to be qualified is exhausted directly. Compared with a traditional simplex photo-oxidized catalytic oxidation method, the method improves the efficiency for removing the VOCs waste gas with stinky and unpleasant smell, no any additives is added in the photocatalytic oxidation process, no secondary pollution is generated, and the multi-pollution to the air can be avoided.

Description

technical field [0001] The invention relates to the technical field of exhaust gas treatment methods, in particular to an ion-modified OH-based light beam catalytic oxidation VOCs exhaust gas treatment method. Background technique [0002] Although volatile organic compounds (VOCs) exhaust gas is not the main component of air pollution and cannot directly produce PM2.5 and ozone, it is an important precursor for the formation of these two air pollutants. The combination of VOCs and nitrogen oxides will generate two types of pollutants under the irradiation of sunlight, one is a component of PM2.5, called secondary organic particulate matter; the other pollutant is ozone. At the same time, VOCs themselves have a strong adsorption capacity for germs and pollutants. Once they enter the human body through breathing, they will cause serious harm to health. [0003] At present, the main sources of VOCs are divided into industrial sources, domestic sources and mobile sources, amon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44B01D47/06B01D53/26B01D53/04G01N33/00
CPCB01D47/06B01D53/007B01D53/04B01D53/26B01D53/8687B01D2253/102B01D2257/708G01N33/0047Y02P70/10Y02A50/20
Inventor 王连革
Owner 天津市远卓环境工程股份有限公司