文献类型：会议论文

英文题名：Research into the kinetics of COS elimination from syngas at moderate temperatures

作者：Wang, Fang-fang;Zhang, De-xiang[1];Zhao, Hai;Wu, Ting-ting;Gao, Jin-sheng

机构：[1]E China Univ Sci & Technol, Dept Chem Engn Energy Resources, Shanghai 200237, Peoples R China; Minist Educ, Key Lab Coal Gasificat, Shanghai 200237, Peoples R China

会议论文集：7th International Symposium on Gas Cleaning at High Temperatures (GCHT-7)

会议日期：JUN 23-25, 2008

会议地点：Newcastle, AUSTRALIA

语种：英文

外文关键词：COS; Desulfurization sorbent; Kinetics; Thermogravimetry

摘要：Thermogravimetry at constant temperature and programmed temperatures is used to study reaction kinetics and possible mechanism of COS desulfurization using ferric oxide as the main active component. The apparent reaction activation energy is smaller in hydrogen atmosphere than in nitrogen. The desulfurization reaction of COS takes place easily in a hydrogen atmosphere. At the same time, the influence of the reducing temperature on the desulfurizing reaction was also studied in the TGA apparatus and was shown to play an important part for ferric desulfurization. The optimum temperature for the reducing reaction is under 360 degrees C. The kinetics of the COS removal reaction are approximately first-order. When the reaction gas contains hydrogen, the apparent reaction activation energy is 12.36 kJ mol (1), in contrast to 21.92 kJ mol (1) in the absence of hydrogen. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.