Fluidization of extremely large and widely sized coal particles as well as its application in an advanced chain grate boiler
文献类型：期刊论文
| 作者 | Liu, Xinhua; Xu, Guangwen; Gao, Shiqiu |
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2008-12-02 |
| 卷号 | 188期号:1页码:23-29 |
| 关键词 | Steam coal Fluidized-bed pyrolyzer Chain grate boiler Fluidization Segregation |
| ISSN号 | 0032-5910 |
| 其他题名 | Powder Technol. |
| 中文摘要 | A pyrolysis combustion technology (PCT) was developed for high-efficiency and environment-friendly chain grate boilers (CGBs). The realization of the PCF in a CGB requires that extremely large and widely sized coal particles should be first pyrolyzed in a semi-fluidized state before being transported into the combustion chamber of the boiler. This article was devoted first to investigating the fluidization of 0-40 mm coal particles in order to demonstrate the technical feasibility of the PCT. In succession, through mixing 0-10 mm and 10-20 mm coal particles in different proportions, multiple pseudo binary mixtures were prepared and then fluidized to clarify the effect of particle size distribution. With raw steam coal used as the feedstock, the superficial gas velocity of about 2.0 m/s may be suitable for stable operation of the fluidized-bed pyrolyzer in the CGB with the PCT. In the fluidization of widely sized coal particles, approximately half of the coal mass is segregated into the bottom section of the bed, though about 15% of 10-20 turn large particles are broken into 0-10 mm small particles because of particle attrition. The experimental results illustrate that an advanced CGB with the PCT has a high adaptability for various coals with different size distributions. (c) 2008 Elsevier B.V. All rights reserved. |
| 英文摘要 | A pyrolysis combustion technology (PCT) was developed for high-efficiency and environment-friendly chain grate boilers (CGBs). The realization of the PCF in a CGB requires that extremely large and widely sized coal particles should be first pyrolyzed in a semi-fluidized state before being transported into the combustion chamber of the boiler. This article was devoted first to investigating the fluidization of 0-40 mm coal particles in order to demonstrate the technical feasibility of the PCT. In succession, through mixing 0-10 mm and 10-20 mm coal particles in different proportions, multiple pseudo binary mixtures were prepared and then fluidized to clarify the effect of particle size distribution. With raw steam coal used as the feedstock, the superficial gas velocity of about 2.0 m/s may be suitable for stable operation of the fluidized-bed pyrolyzer in the CGB with the PCT. In the fluidization of widely sized coal particles, approximately half of the coal mass is segregated into the bottom section of the bed, though about 15% of 10-20 turn large particles are broken into 0-10 mm small particles because of particle attrition. The experimental results illustrate that an advanced CGB with the PCT has a high adaptability for various coals with different size distributions. (c) 2008 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | SEGREGATION ; BEDS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000261856800004 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2809]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xinhua,Xu, Guangwen,Gao, Shiqiu. Fluidization of extremely large and widely sized coal particles as well as its application in an advanced chain grate boiler[J]. POWDER TECHNOLOGY,2008,188(1):23-29. |
| APA | Liu, Xinhua,Xu, Guangwen,&Gao, Shiqiu.(2008).Fluidization of extremely large and widely sized coal particles as well as its application in an advanced chain grate boiler.POWDER TECHNOLOGY,188(1),23-29. |
| MLA | Liu, Xinhua,et al."Fluidization of extremely large and widely sized coal particles as well as its application in an advanced chain grate boiler".POWDER TECHNOLOGY 188.1(2008):23-29. |
入库方式： OAI收割
来源：过程工程研究所
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