Removal of Nox from flue gas with radical oxidation combined with chemical scrubber

Article type: Research Article

Authors: LIN, He | GAO, Xiang | LUO, Zhong-yang | GUAN, Shi-pian | CEN, Kefa | HUANG, Zhen

Affiliations: Institute for Internal-Combustion Engine, Shanghai Jiaotong University, Shanghai 200030, China | Institute for Thermal Power Energy, Zhejiang University, Hangzhou 310027, China

Note: [] Corresponding author. E-mail:[email protected]

Abstract: In this paper, removal of NOx (namely DeNOx) from flue gas by radical injection combined with NaOH solution (26% by weight of NaOH in water) scrubbing was investigated. The experimental results showed that the steady streamer corona occurs through adjusting the flow rate of the oxygen fed into the nozzles electrode. The vapor in the oxygen has influence on the V-I characteristics of corona discharge. Both HNO_2 and HNO_3 come into being in the plasma reactor and the DeNOx efficiency in the plasma reactor is more than 60%. The overall DeNOx efficiency of the whole system reaches 81.7% when the NaOH solution scrubbing is collaborated.

Keywords: radical, plasma reactor, DeNOx process, absorb

Journal: Journal of Environmental Sciences, vol. 16, no. 3, pp. 462-465, 2004