Effects of rapid calcination on properties of calcium-based sorbents

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	Effects of rapid calcination on properties of calcium-based sorbents
	Yan, Chang-Feng 1,2; Grace, John R.2; Lim, C. Jim 2
刊名	fuel processing technology
	2010-11-01
卷号	91 期号:11 页码:1678-1686
关键词	Rapid calcination Calcium-based sorbents Foil Wire mesh
ISSN号	0378-3820
通讯作者	yancf@ms.giec.ac.cn
产权排序	[yan, chang-feng] chinese acad sci, guangzhou inst energy convers, guangzhou 510640, peoples r china; [yan, chang-feng; grace, john r.; lim, c. jim] univ british columbia, dept chem & biol engn, vancouver, bc v6t 1z3, canada
合作状况	国际
中文摘要	the calcination process may influence subsequent fragmentation, sintering and swelling when cao derived from limestone acts as a co(2) or so(2)-sorbent in combustion, gasification and reforming. sorbent properties are affected by co(2) partial pressure, total pressure, temperature, heating rate, impurities and sample size. in this study, the effect of calcination heating rate was investigated based on an electrically heated platinum foil. the effects of heating rate (up to 800 degrees c/s), calcination temperature (700-950 degrees c), particle size (90-180 mu m) and sweep gas velocity were investigated. higher initial heating rates led to lower extents of limestone calcination, but the extents of carbonation of the resulting cao were similar to each other. calcium utilization declined markedly during carbonation or sulphation of cao after calcination by rapid heating. experimental results show that carbonation and calcium utilization were most effective for carbonation temperatures between 503 and 607 degrees c. increasing the extent of calcination is not the best way to improve overall calcium utilization due to the vast increase in energy consumption.
英文摘要	the calcination process may influence subsequent fragmentation, sintering and swelling when cao derived from limestone acts as a co(2) or so(2)-sorbent in combustion, gasification and reforming. sorbent properties are affected by co(2) partial pressure, total pressure, temperature, heating rate, impurities and sample size. in this study, the effect of calcination heating rate was investigated based on an electrically heated platinum foil. the effects of heating rate (up to 800 degrees c/s), calcination temperature (700-950 degrees c), particle size (90-180 mu m) and sweep gas velocity were investigated. higher initial heating rates led to lower extents of limestone calcination, but the extents of carbonation of the resulting cao were similar to each other. calcium utilization declined markedly during carbonation or sulphation of cao after calcination by rapid heating. experimental results show that carbonation and calcium utilization were most effective for carbonation temperatures between 503 and 607 degrees c. increasing the extent of calcination is not the best way to improve overall calcium utilization due to the vast increase in energy consumption. (c) 2010 elsevier b.v. all rights reserved.
学科主题	chemistry ; energy & fuels ; engineering
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; energy & fuels ; engineering, chemical
研究领域[WOS]	chemistry ; energy & fuels ; engineering
关键词[WOS]	thermal-decomposition ; limestone particles ; carbon-dioxide ; surface-area ; wire-mesh ; coal pyrolysis ; bituminous coal ; product layer ; heating-rate ; co2 capture
收录类别	SCI
资助信息	national natural science foundation of china [50306026]; guangzhou science and technology bureau [2006j1-c0421]; natural sciences and engineering research council of canada
原文出处	https://dx.doi.org/10.1016/j.fuproc.2010.07.004
语种	英语
WOS记录号	WOS:000282550900042
公开日期	2014-12-24
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/8478]
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z3, Canada
推荐引用方式 GB/T 7714	Yan, Chang-Feng,Grace, John R.,Lim, C. Jim. Effects of rapid calcination on properties of calcium-based sorbents[J]. fuel processing technology,2010,91(11):1678-1686.
APA	Yan, Chang-Feng,Grace, John R.,&Lim, C. Jim.(2010).Effects of rapid calcination on properties of calcium-based sorbents.fuel processing technology,91(11),1678-1686.
MLA	Yan, Chang-Feng,et al."Effects of rapid calcination on properties of calcium-based sorbents".fuel processing technology 91.11(2010):1678-1686.