Method for low-temperature catalytic ozone treatment of high-humidity organic waste gas

A technology for organic waste gas and ozone treatment, applied in chemical instruments and methods, gas treatment, separation methods, etc., can solve the problems of excessive ozone emission, low catalytic efficiency, easy deactivation of catalysts, etc., to save energy consumption and avoid excessive emissions. , the effect of improving the catalytic degradation efficiency

Inactive Publication Date: 2021-10-19
NANJING UNIV +1
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Problems solved by technology

[0005] Aiming at the existing low-temperature catalytic ozone treatment of organic waste gas, such problems as low catalytic efficiency, high humidity leading to catalyst deactivation, and excessive ozone emission, the present invention provides a treatment method for low-temperature catalytic ozone treatment of high-humidity organic waste gas

Method used

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  • Method for low-temperature catalytic ozone treatment of high-humidity organic waste gas
  • Method for low-temperature catalytic ozone treatment of high-humidity organic waste gas

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Embodiment

[0029] like Figure 1~2 , a purification system for ozone catalytic treatment of organic waste gas for treating chlorobenzene-containing waste gas in sewage plants, the system includes a first dehumidification adsorption tower 1 and a second dehumidification adsorption tower 2; the first dehumidification adsorption tower 1 and the second dehumidification adsorption tower The bottom of the second dehumidification adsorption tower 2 is provided with an air inlet, and the output ends at the top of the first dehumidification adsorption tower 1 and the second dehumidification adsorption tower 2 are connected with the bottom of the gas mixer 3, the heater 5 and the fixed bed catalytic reactor 6 successively. The output end on the top of the fixed bed catalytic reactor 6 is connected to the bottom input end of the first dehumidification adsorption tower 1 and the second dehumidification adsorption tower 2, and the output end on the top of the first dehumidification adsorption tower 1 ...

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Abstract

The invention discloses a method for low-temperature catalytic ozone treatment of high-humidity organic waste gas, and belongs to the field of waste gas treatment. According to the method, firstly, high-humidity organic waste gas is dehumidified by a water absorbent, the dehumidified organic waste gas is properly heated by a heating device and then is mixed with ozone, and a degradation reaction is carried out in a catalyst bed layer, so that direct contact between a large amount of water and a catalyst is avoided, and the degradation efficiency of the organic waste gas, the stability of the catalyst are improved, and the long-term stable operation of the device is ensured; and meanwhile, the reaction tail gas with a certain temperature is used for regenerating the water absorbent, so that the heat is fully utilized, and the energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of organic waste gas treatment, and in particular relates to a method for treating high-humidity organic waste gas with low-temperature catalytic ozone. Background technique [0002] Volatile organic compounds (VOCs) pose serious hazards to human health and the environment, and have been shown to be important precursors for the formation of ozone, secondary organic aerosols, and photochemical smog. VOCs mainly come from industries or fields such as transportation, petrochemical industry, industrial spraying, packaging and printing, oil storage and distribution; no matter what kind of emission source, the emission of VOCs has the characteristics of unstable concentration, coexistence of various types, difficulty in natural degradation, easy Accumulation in the environment and other characteristics will cause continuous pollution to the environment. [0003] The removal methods of VOCs include thermocatalytic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28B01D53/86B01D53/88B01D53/44B01J8/04
CPCB01D53/28B01D53/8687B01D53/88B01D53/8696B01J8/0449B01D2253/106B01D2253/112B01D2251/104B01D2257/708B01D2259/4009
Inventor 龙超张健邵琦许博文柳祎涵胡雪玉
Owner NANJING UNIV
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