Remediation of SO2/NOx Pollution by Corona Non-thermal Plasma Technologies
SO2 and NOx emission has critical effect on public health through respiratory damage and urban environment through acidification, smog, etc, so it is very important to restrain the rising SO2/NOx emission. In general, SO2 and NOx are simultaneously generated from the combustion of fossil fuels (mainly coal), while the conventional technologies including wet limestonegypsum deSO2 process and selective catalytic reduction deNOx process do not hold the ability of simultaneous removal of SO2 and NOx. In recent years, pulsed corona plasma has been attempted to treat boiler flue gas and has demonstrated its effectiveness in removal of both SO2 and NOx, but reduction of the energy consumption should be further studied. In order to enhance the production of deNOx/deSO2 radicals, therefore increase the purifying efficiency of flue gas and reduce the energy consumption, an improved wire-toplate type pulse corona plasma reactor was devised. Experimental results show that the improved plasma reactor presented a better performance in simultaneous removal of SO2 and NOx than the conventional one. Comparing with the conventional wire-to-plate type reactor, SO2/NOx removal rate could be increased over 10％, and the removal rate of NOx and SO2 reached over 55％ and 85％ respectively under a specific input energy lower than 2.1 Wh m3.
SO2/NOx pollution urban environment non-thermal plasma corona discharge
SHANG Kefeng ZHUO Yueran ZHOU Xiuyan WU Yan
Department of Environmental Science and Engineering, Northeastern University at Qinhu angdao College of Chemistry, Nankai University Department of Environmental Science and Engineering, Northeastern University at Qinhuangdao Dalian University of Technology
国际会议
The 6th International Symposium of Asia Institute of Urban Environment(亚洲城市环境学会第六届国际会议)
长春
英文
177-181
2009-09-20（万方平台首次上网日期，不代表论文的发表时间）