细粉在锥形床中流态性能的研究  

Fluidization of Fine Particles in Conical Beds

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1期25-28,共4页Journal of Qinghai University(Natural Science)

摘　　要：文中主要介绍Geldart-A颗粒在三种不同锥角的锥形流化床 ,随着气体表观速度的增加 ,呈现出两种不同的流化区域 ,即固定床和喷动床。由于部分流化床区域的消失 ,所以Gel dart-A流态化状态特征不同于Geldart-D颗粒的状态特征。In this paper,fixed bed regime and spouting bed regime are observed successively with the increase of superficial gas velocity for Geldart-A powder in a conical bed with three cone angles.The characteristics of regime for Geldart-A powderdiffers from that for Geldart-D powder due to the disappearance of partially fluidized bed regime,the conditions of the regime transition and the hydrodynamics for two flow regimes have been studied in detail.

关 键 词：流态化 锥形床 Geldart-A颗粒 流化床 流体力学 流化速度 压降压 

分 类 号：TQ051.13[化学工程] TQ021.1