Semi-dry method pulse plasma flue gas purification system

Abstract

The invention discloses a semi-dry method pulse plasma flue gas purification system. The system comprises a reactor shell for flue gas to circulate and a high-voltage pulse power source form a plasma electric field in the reactor shell and further comprises an atomized water supply system for increasing the water content for the flue gas, a humidity sensor used for humidity of the flue gas in the reactor shell, and a control system used for controlling the water spraying amount of the atomized water supply system according to the detection result of the humidity sensor to keep the relative humidity of the flue gas between 85% and 95%, and the atomized water supply system is arranged on a flue gas inlet of the reactor shell. According to the flue gas purification system, the water spraying amount of the atomized water supply system is controlled through the control system, and the relative humidity of the flue gas is controlled between 85% and 95%; compared with a traditional dry type reaction, the removal efficiency of various pollutants is improved, meanwhile, the corrosion risk of the wet method reaction technology on a subsequent flue and other facilities is also avoided, the economy performance is better, and the semi-dry method pulse plasma flue gas purification system is suitable for a large-scale flue gas processing project.

Description

technical field [0001] The invention relates to the field of flue gas purification equipment, in particular to a semi-dry pulse plasma flue gas purification system. Background technique [0002] In recent years, my country's environmental protection policies have become more and more stringent. For example, the "Emission Standard of Air Pollutants for Thermal Power Plants (GB13223-2011)" stipulates that the emission concentration limit of flue gas pollutants for thermal power plants in key areas is: SO 2 -50mg / m 3 , NO X -100mg / m 3 , Dust-20mg / m 3 . The National Development and Reform Commission, the Ministry of Environmental Protection, and the National Energy Administration jointly issued the "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan (2014-2020)" in 2014, which set the emission concentration limit of flue gas pollutants from thermal power plants in some areas. The value is further reduced to: SO 2 -35mg / m 3 , NO ...

AI Technical Summary

Problems solved by technology

[0009] However, the flue gas treated by the wet device contains a large amount of moisture, which may cause additional corrosion problems to the subsequent flue and chimney

[0010] Therefore, how to overcome the problems of low efficiency and high energy consumption of the traditional dry reaction technology and at the same time avoid the corrosion risk of the wet reaction technology to the follow-up flue and other facilities is a technical problem to be solved by those skilled in the art.

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