Experiment and grey relational analysis of CWS spheres combustion in a fluidized bed
文献类型：期刊论文
| 作者 | Wang, Hui; Jiang, Xiumin; Liu, Jianguo; Lin, Weigang |
| 刊名 | ENERGY & FUELS
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 21期号:4页码:1924-1930 |
| 关键词 | fuel-water slurries attrition |
| ISSN号 | 0887-0624 |
| 其他题名 | Energy Fuels |
| 中文摘要 | In order to study the combustion of coal water slurry (CWS) in fluidized bed boilers, artificial CWS droplet spheres were used for simulation of the spheres formed from CWS droplets which fall from the furnace top to the bed. The artificial spheres were introduced to a bench-scale fluidized bed furnace. Quartz sand was used as the bed material. The influence of the operation conditions (e.g., bed temperature, superficial gas velocity, and bed height) on the combustion characteristics was investigated. The bed temperatures were varied at 650, 750, 850, and 950 degrees C. The gas velocities were in a range of fluidization numbers W (defined as U/U-mf) of 3, 3.5, 4, and 4.5. The bed heights were varied 30, 50, 70, and 90 mm. The CWS spheres were taken out at five residence times (15, 30, 45, 60, and 75 s). The mass ratio of the residue fixed carbon to parent fixed carbon was calculated for studying the influential factors. Under the reference conditions, it is shown that the burnout time is less than 150 s. The grey relational analysis was used to study the degree of relative importance of the influential factors. The results showed that the influence of the bed height is the least, the fluidization number has the greatest influence in the early and later stages, and the bed temperature contributes most in the intermediate stages. |
| 英文摘要 | In order to study the combustion of coal water slurry (CWS) in fluidized bed boilers, artificial CWS droplet spheres were used for simulation of the spheres formed from CWS droplets which fall from the furnace top to the bed. The artificial spheres were introduced to a bench-scale fluidized bed furnace. Quartz sand was used as the bed material. The influence of the operation conditions (e.g., bed temperature, superficial gas velocity, and bed height) on the combustion characteristics was investigated. The bed temperatures were varied at 650, 750, 850, and 950 degrees C. The gas velocities were in a range of fluidization numbers W (defined as U/U-mf) of 3, 3.5, 4, and 4.5. The bed heights were varied 30, 50, 70, and 90 mm. The CWS spheres were taken out at five residence times (15, 30, 45, 60, and 75 s). The mass ratio of the residue fixed carbon to parent fixed carbon was calculated for studying the influential factors. Under the reference conditions, it is shown that the burnout time is less than 150 s. The grey relational analysis was used to study the degree of relative importance of the influential factors. The results showed that the influence of the bed height is the least, the fluidization number has the greatest influence in the early and later stages, and the bed temperature contributes most in the intermediate stages. |
| 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] | FUEL-WATER SLURRIES ; ATTRITION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000248085100015 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3454]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China 2.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 | Wang, Hui,Jiang, Xiumin,Liu, Jianguo,et al. Experiment and grey relational analysis of CWS spheres combustion in a fluidized bed[J]. ENERGY & FUELS,2007,21(4):1924-1930. |
| APA | Wang, Hui,Jiang, Xiumin,Liu, Jianguo,&Lin, Weigang.(2007).Experiment and grey relational analysis of CWS spheres combustion in a fluidized bed.ENERGY & FUELS,21(4),1924-1930. |
| MLA | Wang, Hui,et al."Experiment and grey relational analysis of CWS spheres combustion in a fluidized bed".ENERGY & FUELS 21.4(2007):1924-1930. |
入库方式： OAI收割
来源：过程工程研究所
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