Gas phase organic substance catalytic combustion device and method based on two-dimensional zeolite catalyst

Abstract

The invention discloses a gas phase organic substance catalytic combustion device and method based on an ultra-thin two-dimensional zeolite catalyst. A filter, a catalytic ceramic membrane module, a vacuum pump and two differential pressure controllers are included; the inner and outer walls of a tube pass of the catalytic ceramic membrane module are each coated with an ultra-thin two-dimensionalzeolite catalyst layer, an outlet of the filter is connected to a tube-pass inlet and a shell-pass inlet of the catalytic ceramic membrane module through pipes provided with valves, a tube-pass outletand a shell-pass outlet of the catalytic ceramic membrane module communicate with the atmosphere through pipes provided with valves, an inlet of the vacuum pump is connected to the tube-pass inlet and the shell-pass inlet of the catalytic ceramic membrane module through the valves, an outlet of the vacuum pump is connected to an inlet of the filter, and the two differential pressure controllers are used for detecting pressure differences between the tube-pass inlet and the tube-pass outlet of the catalytic ceramic membrane module and between the shell-pass inlet and the shell-pass outlet of the catalytic ceramic membrane module. The gas phase organic substance catalytic combustion device and method have the beneficial effects that the combustion efficiency is high, environmental protection is achieved, energy consumption is low, secondary pollution is avoided, repeated utilization can be achieved, and the catalytic combustion process of gas phase organic pollutants is achieved.

Description

technical field [0001] The invention relates to a gas-phase organic matter catalytic combustion method and device based on an ultra-thin two-dimensional zeolite catalyst, belonging to the field of waste gas purification. Background technique [0002] With the rapid development of my country's industrial economy, while bringing huge economic benefits to the society, it also discharges a large amount of harmful waste gas. Volatile organic compounds (VOCs) are one of the main pollutants in the air, including hydrocarbons, halogenated hydrocarbons, aromatic hydrocarbons, polycyclic aromatic hydrocarbons, etc., mainly from exhaust gases emitted by industries such as petrochemical, pharmaceutical, printing and painting, motor vehicles, etc. . This kind of organic waste gas will damage human health, irritate human eyes, nose and respiratory tract, have harmful effects on heart, lung, liver and other internal organs and nervous system, and even cause acute or chronic poisoning. An...

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Problems solved by technology

[0004] Carbon deposits may be generated during the catalytic combustion of gas-phase organic pollutants, and there may still be a small amount of dust in the organic waste gas pretreated by the filter. They adhere to the surface of the catalyst during the catalytic combustion process and cover the active sites of the catalyst, which will affect the catalytic performance of the catalyst. effect

And for gaseous organic pollutants with low concentrations, it is difficult to maintain continuous combustion due to their low concentrations

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