文献类型：期刊文献

中文题名：喷动流化床内的木屑流动特性——II.导向管长度的影响

英文题名：Hydrodynamics of Sawdust in a Spout-fluid Bed with a Draft Tube II.Effect of Draft Tube Length

作者：陈明强[1];李丽[2];姚运金[3];颜涌捷[1];任铮伟[1]

机构：[1]华东理工大学能源化工系,上海200237;[2]上海东方能源股份有限公司,上海200237;[3]安徽理工大学化学工程系,安徽232001

年份：2003

卷号：29

期号：1

起止页码：26

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：2003187454462);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(20176017);国家高科技研究发展计划(863计划)项目(AA514020-02)

语种：中文

中文关键词：喷动流化床;流动特性;导向管;木屑;生物质裂解反应器;床层稳定性;流动速度;床层压降

外文关键词：spout-fluid bed; hydrodynamic; draft tube; sawdust

摘要：为了开发喷动流化床生物质裂解反应器,建立了一内径为150mm的有机玻璃冷模实验装置,在室温下考察了不同喷动气和流化气流速下,导向管长度对床层流动特性的影响。结果表明,在其他条件相同时,颗粒循环量、中心喷泉高度及床层压降随导向管长度增长先增加后减少,本装置中导向管的最佳长度为450mm。另外导向管的长度对床层的稳定性也有一定影响。
To develop the reactor for biomass pyrolysis, a 150mm diameter cylindrical spoutfluid bed contactor with draft tube was established. In this paper, the effect of draft tube length on the hydrodynamics of this contactor was investigated with different spouts and fluid gas velocity at ambient temperature. The results showed that for the length of four draft tubes:350mm,400mm,450mm,500mm, all of the solid circulation rates, fountain heights and bed pressure drops increased from 350mm to 400mm and then dropped from 400mm to 500mm when the other factors were all the same. The length affected the operating stability of the bed also. According to the phenomena of the experiment and the hydrodynamics of spoutedfluidized bed, we found 450mm being the best draft tube length in this contactor.