Removal of NO/sub x/ and SO/sub 2/ in plasma reactor with water film

Limin Dong1, Shouguo Sheng1, Lutao Liu2, Jiaxiang Yang1
1Harbin University of Science and Technology, Harbin, China
2Harbin Institute of Technology, Harbin, China

Tóm tắt

SO/sub 2/ and NO/sub x/ have become serious air pollutants in such things as photochemical smog and acid rain. In spite of an attempt to reduce the amount of SO/sub 2/ and NO/sub x/ emitted, the density of SO/sub 2/ and NO/sub x/ in the atmosphere has remained on a stable level, or even become worse. Here, we designed a novel type of a water film corona discharge experiment model. The reactor is composed of needle-plate electrodes that are placed in a glass container filled with the flue gas, (the plate electrode is immersed in the water). In this paper, we emphasized the influence of water on removal rates of NO and SO/sub 2/. The experimental results show that the NO removal rate significant increased with increasing applied DC voltage but the SO/sub 2/ removal rate was not significantly affected by applied DC voltage and slightly improved in the presence of water film. This project is very significant for the prevention of acid rain and the treatment of dust of flue gas and the improvement on the traditional electrical dust precipitator.

Từ khóa

#Rain #Electrodes #Flue gases #Voltage #Air pollution #Photochemistry #Atmosphere #Corona #Atmospheric modeling #Inductors

Tài liệu tham khảo

mizuno, 1995, NOx Removal Process Using Pulsed Discharge Plasma, IEEE Trans Ind Appl, 31, 10.1109/28.464504 yan, 1998, Corona Induced Nonthennal Plasmas: Fundamental Study and Industrial Application, J Electros tat, 44 veldhuizen, 1998, Conbined Effects of Pulsed Discharge Removal of NO, SO2 and NH3 From Flue Gas, Plasma Chem Plasma Proc, 18 lowke, 1995, Therecical Analysis of Removal of Oxides of Sulphur and Nitrogen in Pulsed Operation of Electrostatic Precipitators, IEEE Trans Plasma Sci, 23, 10.1109/27.467988 clements, 1989, Combined removal of SO2. NOx, and fly ash from simulated flue gas using pulsed streamer corona, IEEE Trans Ind Appl, 25, 10.1109/28.18870 10.1063/1.348367