Geldart-D颗粒在长立管料斗系统中悬料态初始条件的研究  

Incipient Condition of Hung-up Regime in a Long Standpipe-hopper System for Geldart-D Powders

作　　者：蔡国斌[1] 汪展文[2] 

机构地区：[1]青海大学化工系,青海西宁810016 [2]清华大学化工系,北京海淀100084

出　　处：《青海大学学报（自然科学版）》2001年第3期5-7,21,共4页Journal of Qinghai University(Natural Science)

摘　　要：三种Geldart-D颗料在 2 1m长的料斗 -立管系统中悬料状态的初始条件的实验已研究表明 :初始悬料区时 ,气体的压力梯度与料斗中颗粒的静态高度和孔板的孔口直径无关 。The incipient condition of hung-up regime for three Geldart-D powders has been experimentally studied in a 21m long standpipe and hopper system.Experimental results show that the pressure gradient at the incipient hung-up state is independent of the stagnant height in the hopper and the diameter of orifices,while correspondingly gas velocity in the standpipe can be predicted by Kwauk's equation.

关 键 词：悬料区 料斗-立管系统 Geldart-D颗粒 压力梯度 静态高度 Kwuk's方程 流速 

分 类 号：TQ021.1[化学工程]