文献类型：期刊文献

英文题名：Simultaneous Removal of NO and SO2 from Flue Gas by Ozone Oxidation and NaOH Absorption

作者：Zhang, Jia[1];Zhang, Rui[1];Chen, Xin[2];Tong, Ming[2];Kang, Wanzhong[2];Guo, Shaopeng[1];Zhou, Yanbo[1];Lu, Jun[1]

机构：[1]E China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[2]SINOPEC Ningbo Engn Co Ltd, Ningbo 315103, Zhejiang, Peoples R China

年份：2014

卷号：53

期号：15

起止页码：6450

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20141817647452);WOS:【SCI-EXPANDED(收录号:WOS:000334657400022)】；

基金：This work was supported by Sinopec Ningbo Engineering Co. Ltd.

语种：英文

外文关键词：Flue gases - Fossil fuels - Oxidation - Ozone - Sodium hydroxide

摘要：Exhaust flue gas from fossil fuel combustion usually contains a large quantity of SO2 and NO. In this paper, a process of simultaneous removal of NO and SO2 by ozone oxidation combined with NaOH absorption was chosen. The main investigations involved O-3 decomposition, factors affecting NO oxidation (O-3 dosage, reaction temperature, NO initial concentration, and presence of SO2), and NaOH absorption. The results indicated O-3 decomposition rate increased as temperature rose and was less affected by initial concentration of O-3. The optimal temperature for NO oxidation was 150 degrees C. NO oxidation efficiency increased with the increase of O-3 dosage at a fixed temperature. NO initial concentration and the presence of SO2 had a slight effect on NO oxidation. The NO oxidation efficiency remained above 90% when n(O3)/n(NO) was 1. Absorption by NaOH solution resulted in the final removal of above 99% NO, 90% NO2, and nearly 100% SO2 at pH above 11.