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Effects of rapid calcination on properties of calcium-based sorbents
Yan, Chang-Feng1,2; Grace, John R.2; Lim, C. Jim2
2010-11-01
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume91Issue:11Pages:1678-1686
Contribution Rank[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
Corresponding Authoryancf@ms.giec.ac.cn
Cooperation Status国际
AbstractThe 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.
SubtypeArticle
Other AbstractThe 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.
KeywordRapid Calcination Calcium-based Sorbents Foil Wire Mesh
Subject AreaChemistry ; Energy & Fuels ; Engineering
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fuproc.2010.07.004
WOS Subject ExtendedChemistry ; Energy & Fuels ; Engineering
URL查看原文
WOS KeywordTHERMAL-DECOMPOSITION ; LIMESTONE PARTICLES ; CARBON-DIOXIDE ; SURFACE-AREA ; WIRE-MESH ; COAL PYROLYSIS ; BITUMINOUS COAL ; PRODUCT LAYER ; HEATING-RATE ; CO2 CAPTURE
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China [50306026]; Guangzhou Science and Technology Bureau [2006J1-C0421]; Natural Sciences and Engineering Research Council of Canada
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000282550900042
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/8478
Collection中国科学院广州能源研究所
Affiliation1.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
Recommended Citation
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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