Double-dielectric-barrier low-temperature plasma synergistic catalytic treatment VOCs line pipe reaction unit

Abstract

The invention relates to a double-dielectric-barrier low-temperature plasma synergistic catalytic treatment VOCs line pipe reaction unit. The unit is composed of an insulating medium kit, an inner electrode, an outer electrode, an end cover kit and a filling particle catalyst, the insulating medium kit comprises an inner pipe, an outer pipe, a perforated sealing plate and a threaded seat, the inner electrode is installed in the inner pipe of the insulating medium kit, one end of the inner electrode is connected with the threaded seat through a thread, an outer electrode is tightly attached tothe outer wall of the outer pipe of the insulating medium kit, one end of an outer pipe of the insulating medium kit is connected with the end cover sleeve through threads, and the other end is fixedly connected with a perforated sealing plate, and the filling particle catalyst is uniformly placed between the inner pipe and the outer pipe of an insulating medium external member, and is fixed in the reaction unit by the perforated sealing plate and the end cover external member to form an one-section cooperative structure. The one-section cooperative structure is adopted, the synergistic effectof low-temperature plasma and photocatalysis is fully utilized, the VOCs removal rate is high, and the yield of a byproduct O3 is low.

Description

technical field [0001] The invention relates to a waste gas treatment reaction unit, in particular to a line pipe reaction unit for co-treatment of VOCs by plasma catalysis. Background technique [0002] Volatile organic compounds (VOCs for short) are a class of air pollutants that are extremely harmful to the human body and the environment. The treatment of volatile organic compounds has become the focus of air pollution control. [0003] Low-temperature plasma synergistic catalytic treatment of volatile organic compounds is an emerging technology in recent years. Can efficiently degrade VOCs into harmless CO 2 and H 2 O. The mechanism of its treatment of VOCs is that after the alternating high voltage is applied to the anode and cathode of the low-temperature plasma reactor, an alternating electric field is generated in the internal gas gap. In the alternating electric field, part of the overcurrent gas molecules are excited into a low-temperature plasma state, generat...

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Problems solved by technology

But the disadvantage is that the two-stage structure is larger than the one-stage structure, and the rear-end photocatalytic section needs to be equipped with an additional ultraviolet lamp to provide a light source

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