文献类型：期刊文献

英文题名：A mechanism investigation of synergy behaviour variations during blended char co-gasification of biomass and different rank coals

作者：Wei, Juntao[1];Gong, Yan[1];Guo, Qinghua[1];Chen, Xueli[1];Ding, Lu[3];Yu, Guangsuo[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[2]Ningxia Univ, State Key Lab High Efficiency Coal Utilizat & Gre, Coll Chem & Chem Engn, Yinchuan 750021, Peoples R China;[3]Lulea Univ Technol, Div Energy Sci, Dept Engn Sci & Math, S-97187 Lulea, Sweden

年份：2019

卷号：131

起止页码：597

外文期刊名：RENEWABLE ENERGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000449892600053)】；

基金：This work was supported by National Key R&D Program of China (2017YFB0602601).

语种：英文

外文关键词：Co-gasification; Biomass; Coal type; Reactivity; Synergy behaviour

摘要：Co-gasification reactivity of rice straw and bituminous coal/anthracite blended chars under CO2 atmosphere was evaluated using thermogravimetric analysis, and the influences of coal type and gasification temperature on synergy behaviour variations on co-gasification reactivity as carbon conversions increased were quantitatively studied. Furthermore, the chemical forms and concentrations of AAEM species at different co-gasification conversions were quantitatively analyzed for revealing co-gasification synergy mechanism. The results demonstrate that as conversions increased, synergy behaviour on co-gasification reactivity of rice straw-bituminous coal blends was shown as the weakened inhibition effect firstly and then the enhanced synergistic effect. Moreover, the inhibition effect on co-gasification reactivity of rice straw-bituminous coal blends was sustained up to higher conversion with the increment of gasification temperature. Differing from rice straw-bituminous coal blends, synergistic effect on co-gasification reactivity of rice straw-anthracite blends was obviously enhanced at early stage of co-gasification and started to slowly weaken after reaching the most significant synergistic effect at middle stage of co-gasification. Additionally, it was revealed that synergy behaviour variations on co-gasification reactivity of rice straw-bituminous coal blends were mainly attributed to the combination effects of active K and Ca transformation during co-gasification, while those of rice straw-anthracite blends indicated a good correlation with active K transformation during co-gasification. (C) 2018 Elsevier Ltd. All rights reserved.