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Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2
Chang, Guozhang; Xie, Jianjun; Huang, Yanqin; Liu, Huacai; Yin, Xiuli; Wu, Chuangzhi
2017-03-01
发表期刊ENERGY & FUELS
卷号31期号:3页码:2887-2895
摘要Intermittent addition of steam was employed to increase the gasification reactivity of palm kernel shell biochar with CO2. The reactivity and variations in pore structures were initially assessed during CO2 and H2O-assisted gasification of biochars in a tube furnace, followed by characterization using thermogravimetric and surface area analysis. A quadratic orthogonal rotation regression combination design was used to investigate the effects of intermittent H2O addition on the total reaction time (t(100%)) of CO2 gasification. The achieving results showed that the formation of micropores with sizes of 0.3 to 1.5 nm was favored by CO, gasification, while the reactivity of biochar was highly correlated with the surface area of micropores of 0.93 to 1.47 nm. A pore expansion effect was the primary phenomenon observed during H2O gasification, while the reactivity of biochar with H2O was closely related to the surface area of pores with specific sizes. CO2 and H2O react with the biochar on separate active sites, and micropores of 0.93-1.54 nm are produced in the early stage of H2O gasification, which enhances CO, gasification. The intermittent addition of H2O increases the reactivity of biochar with CO2, such that the t100% value during CO2/intermittent H2O gasification is 31.89 and 15.80% lower than the values associated with using only CO2 or a simple mixture of CO2 and H2O.
文章类型Article
WOS标题词Science & Technology ; Technology
资助者National Natural Science Foundation of China(51661145022 ; Science and Technology Project of Guangdong Province of China(2014A010106017) ; 51306193) ; National Natural Science Foundation of China(51661145022 ; Science and Technology Project of Guangdong Province of China(2014A010106017) ; 51306193)
DOI10.1021/acs.energyfuels.6b02859
研究领域[WOS]Energy & Fuels ; Engineering
关键词[WOS]PALM SHELL CHAR ; COAL CHARS ; ELEVATED-TEMPERATURES ; PYROLYSIS CONDITIONS ; CARBON NANOTUBES ; HEATING-RATE ; PART II ; H2O ; PRESSURE ; KINETICS
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(51661145022 ; Science and Technology Project of Guangdong Province of China(2014A010106017) ; 51306193) ; National Natural Science Foundation of China(51661145022 ; Science and Technology Project of Guangdong Province of China(2014A010106017) ; 51306193)
WOS类目Energy & Fuels ; Engineering, Chemical
WOS记录号WOS:000396970400081
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/14095
专题中国科学院广州能源研究所
作者单位Chinese Acad Sci, Key Lab Renewable Energy, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
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Chang, Guozhang,Xie, Jianjun,Huang, Yanqin,et al. Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2[J]. ENERGY & FUELS,2017,31(3):2887-2895.
APA Chang, Guozhang,Xie, Jianjun,Huang, Yanqin,Liu, Huacai,Yin, Xiuli,&Wu, Chuangzhi.(2017).Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2.ENERGY & FUELS,31(3),2887-2895.
MLA Chang, Guozhang,et al."Gasification Reactivity and Pore Structure Development: Effect of Intermittent Addition of Steam on Increasing Reactivity of PKS Biochar with CO2".ENERGY & FUELS 31.3(2017):2887-2895.
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