Flow maldistribution at bubble cap distributor in a plant-scale CFB riser
Flow maldistribution was investigated in an 8.5 m high circulating fluidized bed with a rectangular cross section of 1m ×0.3m employed a 14-bubble cap distributor and a 33-bubble cap distributor. Experimental results indicate that the bubble caps in the centre region have large flow rate and the bubble caps at the wall region have small flow rate. The extent of the flow maldistribution is quantitatively characterized by the ratio of the maximum flow rate through a bubble cap to the average flow rate through all bubble caps, maldistribution number, Vmax/Vav. A correlation is proposed forpredicting flow rate distribution, maldistribution number, in the bubble cap distributor by the ratio of distributor pressure drop to riser pressure drop, pressure drop ratio, △Pd/△Pr.
循环流化床 压降比 流量分布 平均流速
Qingjie Guo Joachim Werther
College of Chemistry and Chemical Engineering, University of Petroleum, Dongying, Shandong Province Chemical Engineering Ⅰ, Technical University Hamburg-Harburg, Denickestr. 15, D-21071, Germany
国内会议
湖南张家界
英文
1-16
2004-06-01（万方平台首次上网日期，不代表论文的发表时间）