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浙江大学学报(工学版)
浙江大学学报(工学版)
能源与机械工程     
V2O5-WO3/TiO2催化剂降解气相二恶英的研究
纪莎莎, 李晓东, 俞明锋, 任咏, 陈彤, 王智化, 岑可法
浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
Oxidation of PCDD/Fs over V2O5-TiO2-based catalyst
JI Sha-sha, LI Xiao-dong, YU Ming-feng, REN Yong, CHEN Tong, WANG Zhi-hua, CEN Ke-fa
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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摘要：

基于二恶英发生源研究在200 ℃时蜂窝状V2O5-WO3/TiO2催化剂对不同浓度气相二恶英催化降解的影响.试验结果表明,当二恶英初始毒性当量质量浓度为2.05 ng/m3时,尾气中二恶英的毒性当量质量浓度低于0.1 ng/m3.随着初始质量浓度的增加,二恶英的脱除效率及降解效率都有不同程度的下降.当初始毒性当量质量浓度为12.90 ng/m3时,受催化剂吸附的影响,二恶英的降解率仅为65.9%,向反应系统引入200 mg/m3的臭氧后,降解效率提升至82.2%；进一步提高臭氧质量浓度至400 mg/m3,降解效率提升至91.3%.结果表明,臭氧耦合催化剂有助于降解吸附在催化剂中的二恶英,从而提升高浓度二恶英的降解效率.
Abstract:

Abstract: V2O5-WO3/TiO2 (honeycomb structure) catalyst was used to destroy gas phase PCDD/Fs at different concentration at 200 ℃ based on dioxin generating system. Results show that when the initial TEQ mass concentration of PCDD/Fs is 2.05 ng/m3, the TEQ concentration of PCDD/Fs in off-gas is below 0.1 ng/m3. With increasing the initial mass concentration, both removal and degradation efficiencies decreased at different degree. When initial TEQ mass concentration is 12.90 ng/m3, the degradation efficiency is only 65.9% because more PCDD/Fs was adsorbed by catalyst than the lower initial concentration situation. In order to enhance degradation efficiencies of high initial concentration, ozone (200 mg/m3) was introduced to the system, and the destruction efficiency increased to 82.2%. With increasing the mass concentration of ozone to 400 mg/m3, the destruction efficiency increased to 91.3%. Results show that ozone can help catalyst to destroy high concentration PCDD/Fs by destroying the PCDD/Fs that absorbed in catalyst.
出版日期: 2014-10-01
:  TK 09  
基金资助:

国家“973”重点基础研究发展规划资助项目（2011CB201500）.
通讯作者: 李晓东，男，教授     E-mail: lixd@zju.edu.cn
作者简介: 纪莎莎（1985—），女，博士生，从事持续性有机污染物的抑制与降解研究. E-mail: 11027050@zju.edu.cn
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纪莎莎, 李晓东, 俞明锋, 任咏, 陈彤, 王智化, 岑可法. V2O5-WO3/TiO2催化剂降解气相二恶英的研究[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2014.10.005.

JI Sha-sha, LI Xiao-dong, YU Ming-feng, REN Yong, CHEN Tong, WANG Zhi-hua, CEN Ke-fa. Oxidation of PCDD/Fs over V2O5-TiO2-based catalyst. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2014.10.005.

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http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.10.005    或    http://www.zjujournals.com/eng/CN/Y2014/V48/I10/1746

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