标题：Flue gas conditioning by in situ oxidation of SO2 applying dielectric barrier discharge作者：Che, Yao; Wang, Zuwu; Zhou, Jiayong

来源出版物：ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING 卷：8 期：5 页：636-644 DOI：10.1002/apj.1704出版年：SEP 2013

摘要：An advanced flue gas conditioning technology was developed through in situ oxidation of SO2 using dielectric barrier discharge and heterogeneous condensation of SO3 on fly ash (FA). Orthogonal experiments were carried out for the design of discharge structure, whereas the optimal condition was achieved at 8kV of discharge voltage, 2mm of discharge gap and 56cm(2) of discharge area; single factor experiment was introduced here to investigate impacts of various elements (gas flux, temperature, concentration of SO2 and relative humidity) on oxidation of SO2, results showed that the oxidation of SO2 was in inverse proportion to gas flux and SO2 concentration, whereas in direct proportion to relative humidity, the optimal temperature was detected at 45 degrees C. Physical and chemical characterizations of treated samples were performed in this work using scanning electron microscopy (SEM) and Fourier transform infrared (FTIR). Particle coagulation was found in the SEM, and a continuous peak rise of sulfate at 1086cm(-1) was detected by the FTIR analysis, which indicated that SO3 generated by in situ oxidation of SO2 could be successfully absorbed by the surface of FA particles. The specific resistance of conditioning FA showed a remarkable decrease from 1.41x10(13) to 5.74x10(11)cm compared with the untreated sample.

入藏号：WOS:000325608600002

文献类型：Article

语种：English

作者关键词：flue gas conditioning, SO2 oxidation, fly ash, dielectric barrier discharge

扩展关键词：BATCH REACTOR; REMOVAL; PLASMA; HEALTH; UREA; HYDROLYSIS; AMMONIA; AIR; NOX; DBD

通讯作者地址：Wang, Zuwu;Wuhan Univ, Coll Resource & Environm Sci, Wuhan 430079, Peoples R China

电子邮件地址：hjgc1891@163.com

地址：

[Che, Yao; Wang, Zuwu; Zhou, Jiayong] Wuhan Univ, Coll Resource & Environm Sci, Wuhan 430079, Peoples R China.

研究方向：Engineering

ISSN：1932-2135