Effect of the coal particle size on pyrolysis and char reactivity for two types of coal and demineralized coal
文献类型：期刊论文
| 作者 | Zhu, Wenkui1,2; Song, Wenli1; Lin, Weigang1 |
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 2008-07-01 |
| 卷号 | 22期号:4页码:2482-2487 |
| 关键词 | produce anisotropic cokes fluidized-bed gasification reactivity bituminous coal mineral matter carbonization volatiles macerals behavior reactor |
| ISSN号 | 0887-0624 |
| 其他题名 | Energy Fuels |
| 中文摘要 | A better understanding of the influence of particle size on pyrolysis and char reactivity is of crucial importance in optimizing the integrated process combining coal topping (coal fast pyrolysis) with char gasification. Different size fractions of two types of coal and demineralized coal were pyrolyzed in a spouted bed. The resulting chars were characterized by X-ray diffraction, and char reactivity was determined in a thermogravimetric analyzer (TGA). Within the range of particle sizes investigated, an increase in particle size results in an increase of char yield, which may be caused by the secondary reactions of volatile matters inside the coal particles. No significant difference in crystallinity was observed for the chars from different size fractions of the parent coals, while more crystallinity was observed for the chars from demineralized coals, which suggests that minerals in the coal play a role in the reduction of char crystallinity during pyrolysis. Char reactivity for raw coals decreased with the increasing of the particle size. For the demineralized coal samples, the change in char reactivity with the increasing of the particle size was reduced. Both the secondary reactions of volatiles and mineral distribution are believed to cause the influence of coal particle size on char reactivity. |
| 英文摘要 | A better understanding of the influence of particle size on pyrolysis and char reactivity is of crucial importance in optimizing the integrated process combining coal topping (coal fast pyrolysis) with char gasification. Different size fractions of two types of coal and demineralized coal were pyrolyzed in a spouted bed. The resulting chars were characterized by X-ray diffraction, and char reactivity was determined in a thermogravimetric analyzer (TGA). Within the range of particle sizes investigated, an increase in particle size results in an increase of char yield, which may be caused by the secondary reactions of volatile matters inside the coal particles. No significant difference in crystallinity was observed for the chars from different size fractions of the parent coals, while more crystallinity was observed for the chars from demineralized coals, which suggests that minerals in the coal play a role in the reduction of char crystallinity during pyrolysis. Char reactivity for raw coals decreased with the increasing of the particle size. For the demineralized coal samples, the change in char reactivity with the increasing of the particle size was reduced. Both the secondary reactions of volatiles and mineral distribution are believed to cause the influence of coal particle size on char reactivity. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Energy & Fuels ; Engineering, Chemical |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| 关键词[WOS] | PRODUCE ANISOTROPIC COKES ; FLUIDIZED-BED ; GASIFICATION REACTIVITY ; BITUMINOUS COAL ; MINERAL MATTER ; CARBONIZATION ; VOLATILES ; MACERALS ; BEHAVIOR ; REACTOR |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000257793200049 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2936]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Wenkui,Song, Wenli,Lin, Weigang. Effect of the coal particle size on pyrolysis and char reactivity for two types of coal and demineralized coal[J]. ENERGY & FUELS,2008,22(4):2482-2487. |
| APA | Zhu, Wenkui,Song, Wenli,&Lin, Weigang.(2008).Effect of the coal particle size on pyrolysis and char reactivity for two types of coal and demineralized coal.ENERGY & FUELS,22(4),2482-2487. |
| MLA | Zhu, Wenkui,et al."Effect of the coal particle size on pyrolysis and char reactivity for two types of coal and demineralized coal".ENERGY & FUELS 22.4(2008):2482-2487. |
入库方式： OAI收割
来源：过程工程研究所
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