A Dielectric Barrier Discharge Low Temperature Plasma Harmful Gas Conversion Device

Abstract

The invention relates to a dielectric barrier discharge low-temperature plasma harmful gas conversion device, which belongs to the technical field of industrial waste gas and motor vehicle harmful emissions control. The low-temperature plasma reactor (7) of the present invention is a coaxial tubular dielectric barrier discharge low-temperature plasma reactor, consisting of a central low-voltage electrode (17), a quartz medium (15) coaxial with it, and a high-voltage electrode wrapped on the outer wall of the medium. Electrode (16), Teflon connecting rod (14), front end cover (11), rear end cover (18), front end cover air inlet port (10), rear end cover air outlet port (19) and optional inlet 1. The exhaust interface (20), the gap between the outer wall of the central low-voltage electrode (17) and the inner wall of the quartz medium (15) forms a low-temperature plasma reaction zone. The invention has high treatment efficiency, no secondary pollution, no need for follow-up treatment, simple equipment and easy operation, and is suitable for the treatment of NO, CO, HC, H2S, PM and other harmful substances.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to the technical field of transforming industrial waste gas and harmful emissions from motor vehicles by a low-temperature plasma device. Background technique [0002] With the development of social industrialization, environmental problems have become increasingly prominent. In the overall air pollution, harmful gases mainly come from industrial waste gas and motor vehicle exhaust emissions, and the "pollution contribution sharing rate" of the latter is as high as 60% to 70%. [0003] The current engine purification technology cannot effectively reduce harmful emissions from lean-burn gasoline engines and diesel engines. Because the diesel engine works in an oxygen-enriched state, the traditional three-way catalytic converter TWC (Three way catalyst) fails, which cannot effectively reduce the emission pollutants of the diesel engine. [0004] At present, the trea...

AI Technical Summary

Problems solved by technology

However, this technology has not yet reached the stage of industrial application, mainly due to the need for vacuum conditions, which greatly increases the manufacturing and maintenance costs of the equipment, and also limits the continuity of the treatment of harmful gases, thus greatly limiting its scope of application; ②Low efficiency when dealing with high-velocity harmful gases; ③The mechanical strength cannot meet the requirements of long-term continuous work under vibration conditions; ④The temperature tolerance is poor, and it cannot handle high-temperature harmful gases; ⑤Large energy consumption

Images