一种新型搅拌桨多相混合性能研究  

Performance of a New Type of Impeller in Multiphase System

作　　者：王涛[1] 雍玉梅[1] 禹耕之[1] 杨超[1] 毛在砂[1] 仇振华[2] 

机构地区：[1]中国科学院过程工程研究所,中国科学院绿色过程与工程重点实验室,北京100190 [2]石家庄化纤有限责任公司,河北石家庄050032

出　　处：《化学反应工程与工艺》2009年第1期8-12,共5页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金(20306028,50574081);“863”项目(2007AA060904);“973”项目(2007CB613507)

摘　　要：提出了一种新构型的搅拌桨-错位桨,并以空气-水-石英砂三相体系为研究对象,与传统的径流桨(Rushton桨)和轴流桨(斜叶桨)在功率消耗、混合时间、气体循环方面进行了比较。结果表明,错位桨相对于传统Rushton桨,功率消耗降低,适应气速范围广,轴向混合能力明显提升;在同等条件下与斜叶桨相比,气体分散能力强,混合时间少。这种新型桨能克服径向流叶轮在轴向混合方面能力的缺陷,有较好的潜在工业应用价值。A new type of impeller, named as alternate blade disc turbine （ABDT）, was proposed in this work. Compared with radial （Rushton） and axial （pitched blade turbine） impellers on power consumption, mixing time and gas dispersion in a gas-water-quartz sand system, it was proved that the alternate blade disc turbine was superior to traditional Rushton impeller in power consumption and axial mixing. It also performed better under aeration condition, breaking up the gas into air bubbles of smaller size and giving shorter mixing time than the pitched blade turbine. There may be potential application in the industry for the new impeller because it can offer stronger axial mixing than the conventional radial impellers.

关 键 词：搅拌桨 多相流动 混合 搅拌槽 

分 类 号：TQ03[化学工程]