文献类型：期刊文献

英文题名：Potassium-catalyzed steam gasification of petroleum coke for H2 production: Reactivity, selectivity and gas release

作者：Wu, Youqing[1]; Wang, Jianjian[1]; Wu, Shiyong[1]; Huang, Sheng[1]; Gao, Jinsheng[1]

机构：[1] Department of Chemical Engineering for Energy Resources, Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China

年份：2011

卷号：92

期号：3

起止页码：523

外文期刊名：Fuel Processing Technology

收录：EI(收录号：20110413621706)

语种：英文

外文关键词：Hydrogen production - Catalyst selectivity - Catalytic reforming - Chemical shift - Water gas shift - Gasification - Steam - Steam reforming - Catalysis - Carbon dioxide - Petroleum coke

摘要：Potassium-catalyzed steam gasification of petroleum coke for H2 production was performed using a laboratory fixed-bed reaction system with an on-line quadruple mass spectrometer. The gasification reactivity, gasification selectivity and gas release for the catalytic gasification were investigated, compared with the non-catalytic gasification. The catalytic gasification could not only effectively promote these reactions (the water-carbon reaction, the water-gas shift reaction and the methane-steam reforming reaction), but also elevate greatly the gasification selectivity towards CO2 (a high gasification selectivity towards CO2 meant a high H2 production). A quantitative calculation method for the gasification selectivity towards CO and CO2 was proposed to further understand the catalytic behaviors of catalysts. In the case of catalytic gasification, the gasification temperature had opposite effects on the gasification reactivity and the gasification selectivity towards CO2, suggesting that there existed an optimum gasification temperature (about 750 °C) for H2 production from the potassium-catalyzed steam gasification of petroleum coke. In addition, petroleum coke could be feasibly utilized as the feedstocks for the catalytic steam gasification to produce gases with high H2 (55.5-60.4%) and virtually no CH4 (below 0.1%). ? 2010 Elsevier B.V. All rights reserved.