橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2004 Vol.27 No.5 P.272-276

橡胶技术网

多层桨搅拌槽内的液-液分散特性

Liquid-liquid dispersion properties in a multi-blade agitated tank

包雨云  刘新卫  高正明  王英琛  黎树根 

摘 要:在直径为0.476 m的椭圆底圆柱形搅拌槽内,以水/航空煤油及水/环己烷为实验体系,研究了Rushton涡轮式搅拌桨(RT-6)、六半椭圆管涡轮式搅拌桨(HEDT)、折叶轴流式搅拌桨及翼形轴流式搅拌桨(CBY)的6种不同组合桨的液-液分散特性,用取样法测定了分散相体积分数的轴向分布及体系澄清时间.结果表明,组合桨中的底桨在液-液分散中发挥了主要作用.单位体积输入功率相同时,底桨为CBY的组合桨进行液-液分散后,液滴的平均滴径最小,体系澄清时间较长;底桨为HEDT的组合桨的分散效果次之;底桨为RT-6的组合桨因滴径分布较宽,虽然平均滴径最大,但澄清时间也较长.
关键词:搅拌桨;搅拌槽;液-液分散;均匀性指数;澄清时间
分类号:TQ330.4 文献标识码:B

文章编号:1000-1255(2004)05-0272-05

作者简介:包雨云(1971-),女,在职博士生,副教授.已发表论文15篇.高正明,通讯联系人.
作者单位:包雨云(北京化工大学,化学工程学院,北京,100029) 
     刘新卫(北京化工大学,机电工程学院,北京,100029) 
     高正明(北京化工大学,化学工程学院,北京,100029) 
     王英琛(北京化工大学,化学工程学院,北京,100029) 
     黎树根(巴陵石油化工有限责任公司,化工厂,湖南,岳阳,414014) 

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收稿日期:2003年12月29日

修稿日期:2004年6月14日

出版日期:2004年9月15日