通气条件下桨型对自浮颗粒悬浮的影响  

Effects of Impeller Types on Suspension of Floating Particles under Conditions of Gas Charging

作　　者：徐世艾[1] 冯连芳[2] 顾雪萍[2] 王凯[2] 

机构地区：[1]烟台大学化工系,烟台264005 [2]浙江大学聚合反应工程国家重点实验室

出　　处：《化学工程》2000年第2期42-45,48,共5页Chemical Engineering(China)

基　　金：浙江省自然科学基金;山东省自然科学基金

摘　　要：考察了五十二种搅拌桨的组合对搅拌釜内自浮颗粒的气液固三相体系混合问题的功耗、气含率和釜底部的颗粒含量的影响。研究表明 ,对自浮颗粒三相体系的搅拌混合应采用多层桨 ,且上层最好用上推式桨 ;实验发现 ,当高径比为 1 .6时 ,三层桨的混合参数优于两层桨的 ;给出了优异的搅拌桨型。The effects of impeller types on the power consumption,gas holdup and solid concentration at the bottom of the stirred tank were systematically investigated in gas liquid floating particle three phase systems.It was revealed that the suspension of floating particles was completely different from those of setting particles.Three stage impellers were beneficial to the mixing of gas liquid floating particle three phase systems and the upward axial impeller should be used as the upper impeller.The mixing characteristics in three stage impeller stirred tank were superior to those in two stage impellers stirred tank when the aspect ratio is about 1.6.The impeller types fitted for this mixing problem were chosen.The impellerscombination suitable for this system was given. [HT7”SS] [WT5HZ]

关 键 词：自浮颗粒 搅拌桨 桨型 搅拌混合 通气条件 

分 类 号：TQ01[化学工程]