Swelling and shrinkage behavior of raw and processed coals during pyrolysis
文献类型：期刊论文
| 作者 | Fu, Zhixin; Guo, Zhancheng; Yuan, Zhangfu; Wang, Zhi |
| 刊名 | FUEL
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 86期号:3页码:418-425 |
| 关键词 | coal pyrolysis swelling shrinkage |
| ISSN号 | 0016-2361 |
| 其他题名 | Fuel |
| 中文摘要 | Direct observation of transient swelling and shrinkage behavior of raw coals and processed coals was conducted by using a digital camera with a long focus lens, and quantitative description of swelling and shrinkage was resulted from subsequent image processing. The results showed that the raw and processed coals in pyrolysis behaved differently. The shrinkage of the processed coals was quite different, the maximum volumetric shrinkage ratio at 1000 degrees C as in the range of 32-38% with swelling ratios less than 5%, and the volumetric swelling ratio increased and the shrinkage ratio decreased with the increase of coal sample density. The maximum volumetric swelling ratio of the raw coals was more prominent than those of the processed coals. The raw coal A(2) showed a maximum swelling ratio of 20-85% and the raw coal B-2 showed a maximum swelling ratio of 25-45%. The volumetric swelling ratios decreased and the shrinkage increased with the decrease of the sample size. It is considered that the different pyrolysis behaviors were mainly due to the variation in their macroscopic structures. However, the similar swelling and shrinkage curves of coal samples were observed for the same raw or processed coals. In addition, the effect of volatile matter on the volumetric shrinkage ratios would be weakened if the raw coal was crushed into powder and then pressed into processed coal samples. Scanning electron microscope analysis showed that the structure of coke after pyrolysis was also different. (c) 2006 Elsevier Ltd. All rights reserved. |
| 英文摘要 | Direct observation of transient swelling and shrinkage behavior of raw coals and processed coals was conducted by using a digital camera with a long focus lens, and quantitative description of swelling and shrinkage was resulted from subsequent image processing. The results showed that the raw and processed coals in pyrolysis behaved differently. The shrinkage of the processed coals was quite different, the maximum volumetric shrinkage ratio at 1000 degrees C as in the range of 32-38% with swelling ratios less than 5%, and the volumetric swelling ratio increased and the shrinkage ratio decreased with the increase of coal sample density. The maximum volumetric swelling ratio of the raw coals was more prominent than those of the processed coals. The raw coal A(2) showed a maximum swelling ratio of 20-85% and the raw coal B-2 showed a maximum swelling ratio of 25-45%. The volumetric swelling ratios decreased and the shrinkage increased with the decrease of the sample size. It is considered that the different pyrolysis behaviors were mainly due to the variation in their macroscopic structures. However, the similar swelling and shrinkage curves of coal samples were observed for the same raw or processed coals. In addition, the effect of volatile matter on the volumetric shrinkage ratios would be weakened if the raw coal was crushed into powder and then pressed into processed coal samples. Scanning electron microscope analysis showed that the structure of coke after pyrolysis was also different. (c) 2006 Elsevier Ltd. All rights reserved. |
| 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] | EXCESSIVE COKING PRESSURE ; COKE-OVEN ; CARBONIZATION PHASES ; PLASTIC LAYER ; GAS-PRESSURE ; CHAR STRUCTURE ; CONTRACTION ; GENERATION ; MODEL |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000243799400014 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3309]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Lab Multiphase React, Beijing 100080, Peoples R China 3.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fu, Zhixin,Guo, Zhancheng,Yuan, Zhangfu,et al. Swelling and shrinkage behavior of raw and processed coals during pyrolysis[J]. FUEL,2007,86(3):418-425. |
| APA | Fu, Zhixin,Guo, Zhancheng,Yuan, Zhangfu,&Wang, Zhi.(2007).Swelling and shrinkage behavior of raw and processed coals during pyrolysis.FUEL,86(3),418-425. |
| MLA | Fu, Zhixin,et al."Swelling and shrinkage behavior of raw and processed coals during pyrolysis".FUEL 86.3(2007):418-425. |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。