Characteristics of pyrolytic topping in fluidized bed for different volatile coals
文献类型：会议论文
| 作者 | Xiong, R.; Dong, L.; Xu, G.W. |
| 出版日期 | 1905-07-01 |
| 会议日期 | May 18, 2009 - May 21, 2009 |
| 会议地点 | Xian, China |
| 关键词 | Structure (composition) - Fluidized bed combustion - Chemical reactors - Coal combustion - Indicators (chemical) - Lignite - Tar - Chemical analysis - Coal deposits - Aromatic compounds |
| DOI | 10.1007/978-3-642-02682-9_60 |
| 页码 | 404-409 |
| 英文摘要 | Coal is generally combusted or gasified directly to destroy completely the chemical structures, such as aromatic rings containing in volatile coals including bituminite and lignite. Coal topping refers to a process that extracts chemicals with aromatic rings from such volatile coals in advance of combustion or gasification and thereby takes advantage of the value of coal as a kind of chemical structure resource. CFB boiler is the coal utilization facility that can be easily retrofitted to implement coal topping. A critical issue for performing coal topping is the choice of the pyrolytic reactor that can be different types. The present study concerns fluidized bed reactor that has rarely been tested for use in coal topping. Two different types of coals, one being Xiaolongtan (XLT) lignite and the other Shanxi (SX) bituminous, were tested to clarify the yield and composition of pyrolysis liquid and gas under conditions simulating actual operations. The results showed that XLT lignite coals had the maximum tar yield in 823-873K and SX bituminite realized its highest tar yield in 873鈭?23K. Overall, lignite produced lower tar yield than bituminous coal. The pyrolysis gas from lignite coals contained more CO and CO2 and less CH4, H2 and C2+C 3 (C2H4, C2H6, C 3H6, C3H8) components comparing to that from bituminous coal. TG-FTIR analysis of tars demonstrated that for different coals there are different amounts of typical chemical species. Using coal ash of CFB boiler, instead of quartz sand, as the fluidized particles decreased the yields of both tar and gas for all the tested coals. Besides, pyrolysis in a reaction atmosphere simulating the pyrolysis gas (instead of N2) resulted also in higher production of pyrolysis liquid. |
| 资助机构 | SpringerOpen |
| 会议录 | 20th International Conference on Fluidized Bed Combustion
 |
| 学科主题 | Fluidized Beds |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/59491]  |
| 作者单位 | State Key Laboratory of Multi-Phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100080, China |
| 推荐引用方式 GB/T 7714 | Xiong, R.,Dong, L.,Xu, G.W.. Characteristics of pyrolytic topping in fluidized bed for different volatile coals[C]. 见:. Xian, China. May 18, 2009 - May 21, 2009. |
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。