DETAIL MEASUREMENT OF BED VOIDAGE DISTRIBUTION IN A BIOMASS CIRCULATING FLUIDIZED BED

摘要：

Hydrodynamic characteristics of sawdust were investigated in a circulating fluidized bed (CFB) with height of 10m and inner diameter of 0.28m. Experiments were carried out to study the axial and radial distributions of bed voidage along the riser, under the conditions of superficial velocity U8=1.81 ～2.26m/s, particle circulation rate G5=0.62～1.12kg/ (m2.s). Results show that stable operation of the CFB can be obtained if sufficient materials are kept in the downer; particle flow in the riser shows a typical core-annulus structure; average bed voidage increases along with bed height; flow characteristics along the riser of core, transition and annulus area can be obtained by dividing the cross section into three areas with r/R= 0～0.71, 0.71～0.93 and 0.93～1.

关键词： Sawdust Circulating fluidized bed Cold state experiment Bed voidage

作者: Chu WANG Zhao-qiu ZHOU Xiu-li YIN Long-long MA Chuang-zhi WU Jian-jun XIE Qi MIAO Jing-xu ZHU

作者单位: The Renewable Energy and Gas Hydrate Key Laboratory of CAS,Guangzhou Institute of Energy Conversion, The Renewable Energy and Gas Hydrate Key Laboratory of CAS,Guangzhou Institute of Energy Conversion, Particle Technology Research Centre,University of Western Ontario,London,Canada N6A 5B9

会议类型: 国际会议

会议名称: 2008年生物质能源技术国际会议

会议地点: 广州

会议语种:英文

页码: 1139-1143

在线出版日期: 2008-12-03（万方平台首次上网日期，不代表论文的发表时间）