Device for treating exhaust air in combination of dielectric barrier discharge plasma oxidation/solution absorption and method

Abstract

The invention relates to a device and a method used for combined exhaust gas disposal of dielectric barrier discharge plasma oxidation / solution absorption. In the method, the exhaust gas sequentially passes through a plasma area generated by a dielectric barrier discharge electrode system (1) and a solution absorption area in a water storage container (5), thus achieving the object of exhaust gas disposal. In the device, a power supply of the dielectric barrier discharge electrode system (1) is an AC high-voltage power supply which is provided with a high-voltage discharge electrode (6) and a low-voltage electrode (7); wherein, the high-voltage discharge electrode (6) is a metal rod electrode or a metal toroid electrode; the low-voltage electrode (7) is a cylindrical metal conductor which is sheathed on the external wall of an insulated medium pipe (8) or solution in the water storage container (5). The device and the method of the invention have the beneficial effects of simple principle, low technical difficulty, low cost, simple operation, high disposal efficiency, and generating no secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to the treatment of gas pollutants, in particular to a device and method for combined treatment of waste gas by dielectric barrier discharge plasma oxidation / solution absorption. Background technique [0002] With the rapid development of the world economy, human production and living activities are emitting a large amount of waste gas into the atmosphere, including acid gas, various dust suspended particles, volatile organic compounds and other harmful gases. The emission of these harmful gases makes the air quality worse and has become a major issue affecting the sustainable development of human beings. Therefore, it is of great significance to vigorously carry out research on gas pollutant treatment technologies. [0003] At present, there are two main methods for controlling gas pollutants: one is the traditional treatment method, including absorption method, adsor...

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Problems solved by technology

[0004] Although the absorption method has high absorption efficiency, simple equipment and low one-time investment cost, this method needs to process the absorbed liquid, the equipment is easy to corrode, and it is limited to the treatment of waste gas that is easily absorbed by the solution; adsorption method, combustion Other traditional treatment methods such as condensation method and condensation method also have disadvantages such as low treatment efficiency, large secondary pollution and small application range.

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