Effects of rapid calcination on properties of calcium-based sorbents

doi:10.1016/j.fuproc.2010.07.004

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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
	2010-11-01
发表期刊	FUEL PROCESSING TECHNOLOGY
ISSN	0378-3820
卷号	91 期号:11 页码:1678-1686
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
通讯作者	yancf@ms.giec.ac.cn
合作性质	国际
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.
文章类型	Article
其他摘要	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.
关键词	Rapid Calcination Calcium-based Sorbents Foil Wire Mesh
学科领域	Chemistry ; Energy & Fuels ; Engineering
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.fuproc.2010.07.004
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering
URL	查看原文
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
语种	英语
项目资助者	National Natural Science Foundation of China [50306026]; Guangzhou Science and Technology Bureau [2006J1-C0421]; Natural Sciences and Engineering Research Council of Canada
WOS类目	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000282550900042
引用统计	被引频次：14[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/344007/8478
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.

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