Multi-dielectric barrier discharge basic unit, reactor and waste gas treatment method

Abstract

The invention discloses a multi-dielectric barrier discharge basic unit, a reactor and a waste gas treatment method. The discharge basic unit comprises a conducting wire and a pair of electrodes, wherein the two electrodes are connected with an input end and an output end of a power supply through metal wires respectively; at least one surface of each electrode is partially or completely covered with a first non-metallic medium, the surface of the first non-metallic media is partially or completely covered with second non-metallic media, discharge space is formed between the second non-metallic media and is provided with at least one air inlet and one air outlet. The surface of the dielectric for discharge barrier is covered with the second non-metallic media, and accordingly, purposes ofprotecting the dielectric and improving the discharge uniformity are achieved. Meanwhile, because the second non-metallic media have certain gas adsorption property, the purpose of prolonging gas residence time can be achieved, and uniform discharge can be generated, the exhaust gas purification efficiency in unit space volume is improved.

Description

technical field [0001] The invention designs a waste gas treatment device, and in particular relates to a discharge basic unit and a reactor using a multi-media barrier. Background technique [0002] The application of dielectric barrier discharge reactor has a history of 160 years, and it has been widely used in sterilization, disinfection, material preparation, waste gas treatment, ozone generation and other fields. Because dielectric barrier discharge is difficult to achieve uniform discharge, the effect of gas treatment is inhibited to a certain extent; in addition, due to the small discharge space of dielectric barrier discharge reactor, it is easy to be blocked by fine particles entrained in exhaust gas, which affects its service life . The current dielectric barrier discharge adopts a single dielectric barrier discharge, that is, the surface of the electrode is covered by a layer of non-metallic medium. The main disadvantage of this discharge method is that the disch...

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Problems solved by technology

Because dielectric barrier discharge is difficult to achieve uniform discharge, the effect of gas treatment is inhibited to a certain extent; in addition, due to the small discharge space of dielectric barrier discharge reactor, it is easy to be blocked by fine particles entrained in exhaust gas, which affects its service life

The current dielectric barrier discharge adopts a single dielectric barrier discharge, that is, the surface of the electrode is covered by a layer of non-metallic medium. The main disadvantage of this discharge method is that the discharge is difficult to be uniform, and it is difficult to effectively treat the gas, so the residence time of the gas is longer. Long, fine particles are also collected on the dielectric barrier discharge reactor due to the long gas residence time

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