Low-temperature plasma waste gas purifying method

Abstract

The invention relates to a low-temperature plasma waste gas purifying method. Waste gas enters a box body via an air inlet; the waste gas entering the box body is firstly required to be subjected to pretreatment of a high-temperature gas-liquid filtering net; the waste gas subjected to pretreatment enters a processing chamber; molecules in the waste gas can be decomposed in extremely short time due to low-temperature plasma in the processing chamber; the waste gas passing through the processing chamber enters a gas remixing chamber; concentration of the waste gas is uniform due to the gas remixing chamber so as to prepare for the entering of the waste gas in a second processing chamber; the waste gas passing through the gas remixing chamber enters the second processing chamber to be further decomposed. Compared with the prior art, the method has the advantages that under the acceleration effect of an electric field to the processing chambers, high-energy electrons are generated in stainless steel tubes, when the average energy of the electrons exceeds the molecule chemical bond energy of a target management object, the molecule bond cracks so as to achieve the aim of eliminating gaseous pollutants; by multi-stage processing, pollutant molecules can be easily decomposed efficiently; the processing energy consumption is low; the secondary pollution is prevented.

Description

technical field [0001] The invention relates to the technical field of exhaust gas purification devices, in particular to a low-temperature plasma exhaust gas purification method. Background technique [0002] With the development of industrial economy, the volatile waste gas produced by chemical, petroleum and paint industries is increasing day by day. These waste gases not only bring serious pollution to the environment, but also cause great harm to human health. These waste gases are now treated by combustion methods, oxidation methods, etc., but these methods have the disadvantages of high cost and easy to cause secondary pollution. At present, low-temperature plasma technology is remarkable in the treatment of gaseous pollutants. Low-temperature plasma is the fourth state of matter after solid, liquid, and gaseous states. When the applied voltage reaches the discharge voltage of the gas, the gas is broken down, producing electrons including electrons. , a mixture of va...

AI Technical Summary

Problems solved by technology

However, since plasma is an interdisciplinary subject including discharge physics, discharge chemistry, chemical reaction engineering, electronic technology and material science, the technology is not yet mature, and many low-temperature plasma exhaust gas purification devices are currently The cost is high and will still produce secondary pollution

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