Volume DBD (dielectric-barrier discharge) based oxide generation and formaldehyde removal device

Abstract

The invention discloses a volume DBD (dielectric-barrier discharge) based oxide generation and formaldehyde removal device. The volume DBD based oxide generation and formaldehyde removal device comprises a gas source used for producing formaldehyde and air mixed gas, a valve C connected to the gas source, a gas flowmeter connected to the gas source, a formaldehyde generator connected between the gas source and a DBD reaction chamber, a valve B used for controlling initial concentration of formaldehyde by controlling flow, a valve A connected between the valve C and the DBD reaction chamber, agas detection chamber connected to the DBD reaction chamber and a gas monitoring device connected to the gas detection chamber. With adoption of the device, a contrast experiment between formaldehyderemoval by pure ozone and formaldehyde removal by discharge can be realized, and a key substance affecting the removal effect can be found out.

Description

technical field [0001] The invention relates to an experimental device, in particular to a volume dielectric barrier discharge oxide generation and formaldehyde removal device. Background technique [0002] Volatile organic compounds (volatile organic compounds, VOCs) cause serious harm to human health, and are toxic, mutagenic, and carcinogenic. In addition, VOCs can also cause serious ecological and environmental problems such as the greenhouse effect, photochemical smog, and ozone layer destruction. Formaldehyde (HCHO) is one of many volatile organic compounds and a major source of indoor air pollution, mainly from adhesives, resins and glues used to make wood products and foam insulation, or from photocatalytic oxidation to process other volatile Intermediate product of sexual organic matter. In recent years, efforts have been made to develop efficient VOCs removal technologies, such as advanced oxidation technology, chemical absorption, and biodegradation. In the adv...

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Problems solved by technology

Compared with it, the ammonia water method has problems such as high device cost, large water consumption, and inability to remove volatile organic compounds (VOCs) and dioxins; the ozone method produces high ozone concentration, which poses a great threat to human health; the photocatalytic method is highly efficient. Catalysts increase the cost of technology, and research on photocatalytic inorganic coatings is still immature

In short, the existing exhaust gas treatment technology has its own shortcomings compared with plasma technology

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