文献类型：期刊文献

英文题名：Effect of biomass leachates on structure evolution and reactivity characteristic of petroleum coke gasification

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

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Coal Utilizat & Gre, Yinchuan 750021, Ningxia, Peoples R China;[3]Curtin Univ, Fuels & Energy Technol Inst, Perth, WA 6845, Australia

年份：2020

卷号：155

起止页码：111

外文期刊名：RENEWABLE ENERGY

收录：;EI(收录号：20201508393294);WOS:【SCI-EXPANDED(收录号:WOS:000537825800011)】；

基金：This work has been partially supported by National Key R&D Program of China (2017YFB0602601), National Natural Science Foundation of China (21878093) and Key Program for Outstanding PhD Candidate of East China University of Science and Technology.

语种：英文

外文关键词：Biomass leachate; Catalytic gasification; Petroleum coke; Reactivity characteristics; Structural evolution

摘要：Influences of biomass leachate (BL) additives (rice straw leachate(RSL) and corn straw leachate(CSL)) on reactivity characteristics and structural evolution of petroleum coke (PC)-CO2 gasification were investigated. Specific reactivity (SR0.9) was proposed to quantify influence of BL on PC char gasification and the results demonstrate that BL facilitated PC char gasification and RSL showed more obvious catalytic effect, which was mainly attributed to positive effect of BL on carbon structure evolution and AAEM specie retention during PC char gasification. The results from Raman band area ratio difference and AAEM/Si difference of gasification semi-chars demonstrate that BL was conducive to reducing order degree of carbon structure, increasing amorphous carbon structure and enhancing AAEM concentrations during PC char gasification and RSL exhibited more positive effect. Furthermore, SR0.9 variations with temperature show that catalytic effects of BL initially weakened and then enhanced as gasification temperature increased from 1000 to 1300 degrees C, which was well related with variation trend of positive effect of BL on char structural evolution at different temperatures. Free-model method exactly predicted char gasification with high correlation coefficients (>0.98), and activation energy of PC char with CSL and RSL additions were 28.00 kJ mol(-1 )and 41.68 kJ mol(-1) lower than that of PC char, respectively. (C) 2020 Elsevier Ltd. All rights reserved.