Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| 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 Publication | FUEL PROCESSING TECHNOLOGY
 |
| ISSN | 0378-3820 |
| Volume | 91Issue: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 Author | yancf@ms.giec.ac.cn |
| Cooperation Status | 国际 |
| Abstract | 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. |
| Subtype | Article |
| Other Abstract | 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. |
| Keyword | Rapid Calcination Calcium-based Sorbents Foil Wire Mesh |
| Subject Area | Chemistry ; Energy & Fuels ; Engineering |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1016/j.fuproc.2010.07.004 |
| WOS Subject Extended | Chemistry ; Energy & Fuels ; Engineering |
| URL | 查看原文 |
| WOS Keyword | THERMAL-DECOMPOSITION ; LIMESTONE PARTICLES ; CARBON-DIOXIDE ; SURFACE-AREA ; WIRE-MESH ; COAL PYROLYSIS ; BITUMINOUS COAL ; PRODUCT LAYER ; HEATING-RATE ; CO2 CAPTURE |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | National Natural Science Foundation of China [50306026]; Guangzhou Science and Technology Bureau [2006J1-C0421]; Natural Sciences and Engineering Research Council of Canada |
| WOS Subject | Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical |
| WOS ID | WOS:000282550900042 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/8478 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | 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 |
| 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Effects of rapid cal（1395KB） | 开放获取 | CC BY-NC-SA | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment