PRESSURE BALANCE IN A CIRCULATING FLUIDIZED BED

摘要：

The study of pressure balance is important to describe the fluid dynamics and control the material balance in a circulating fluidized bed (CFB). In this paper, a series of experiments have been conducted with pressure measurement along the CFB loop in a cold rig under different fluidizing gas velocities, bed inventory, circulating rates, and aeration rates. The influence of different parameters on riser pressure drop and axial suspension density profile was discussed. Besides the pressure drop inside the riser, special attention was paid to the exit pressure drop and cyclone pressure drop. Correlations between the exit pressure drop and circulating rate was assessed, which provide a convenient way to obtain circulating rate through exit pressure drop measurement for a certain CFB apparatus. Experiments also found that the cyclone pressure drop increases linearly with circulating rate at a given fluidizing gas velocity.

关键词： Circulating fluidized bed (CFB) pressure balance pressure drop circulating rate

作者: Shaohua LI Jun WANG Hairui YANG Hai ZHANG Qing LIU Junfu LU Guangxi YUE

作者单位: Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Thermal Engineering, Tsinghua University, Beijing, 100084, P.R.China

会议类型: 国际会议

会议名称: 第六届煤燃烧国际会议(The 6th International Symposium on Coal Combustion)

会议地点: 武汉

会议语种:英文

页码: 477-482

在线出版日期: 2007-12-01（万方平台首次上网日期，不代表论文的发表时间）