Apparatus for removing indoor harmful gas based on nanosecond pulsed discharge technology

Abstract

The invention provides an apparatus for removing indoor harmful gas based on nanosecond pulsed discharge technology, belonging to the field of plasma technology. According to the invention, a rod-shaped high voltage electrode (3) made of a metal runs through along and is fixed at the center axis of a quartz tube (5); the middle part in the quartz tube (5) is filled with a granular catalyst (7), and a metal coil (6) is wound around the external surface of the part of the quartz tube (5) filled with the granular catalyst (7); two ends of the quartz tube (5) are respectively sealed by a sealing plug (4) made of an insulating material; two ends of the quartz tube (5) are respectively equipped with a gas inlet pipeline (8) and a gas outlet pipeline (9) which respectively have a valve; the high voltage electrode (3) penetrates the sealing plug (4) to be connected with a high-voltage pulse power supply (1) at the side close to the gas inlet pipeline (8); and harmful gas enters into the quartz tube (5) through the gas inlet pipeline (8), and gas removed by using discharge technology reaches a gas detection system (10) through the gas outlet pipeline (9). The apparatus provided by the invention adopts cooperation between nanosecond pulse homogeneous medium barrier discharge plasma and the catalyst to remove indoor harmful gas and has the characteristics of high efficiency, low power consumption, a great air speed, no damage to the surface of the catalyst, no secondary pollution, etc.

Description

Technical field [0001] The invention belongs to the field of plasma technology, and in particular relates to a device for removing indoor harmful gases such as formaldehyde and benzene with a line-tube nanosecond pulse dielectric barrier discharge plasma cooperative catalyst. Background technique [0002] Indoor harmful gases are volatile compounds released from building decoration materials and furniture products, among which formaldehyde, benzene, ammonia and radon are particularly harmful. These harmful gases will cause serious harm to the human respiratory system, sensory system and nervous system. Traditional indoor harmful gas removal methods include chemical reaction method, high temperature catalytic decomposition method, photocatalytic decomposition method, physical adsorption method, biological treatment method, etc. However, these traditional removal methods have certain disadvantages, for example: the chemical reaction method is only effective in a short period ...

AI Technical Summary

Problems solved by technology

Atmospheric pressure non-equilibrium plasma technology applied to indoor removal of toxic and harmful gases mainly includes methods such as dielectric barrier discharge and pulsed corona discharge. Not big enough, high energy consumption, exhaust gas contains a lot of CO by-products and other problems

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