文献类型：期刊文章

作　　者：高正明[1] 施力田[1] 郑国军[2]

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]中国石化北京燕化石油化工股份有限公司合成橡胶事业部,北京102503

出　　处：《化工学报》

年　　份：2002

卷　　号：53

期　　号：9

起止页码：972-975

语　　种：中文

收录情况：AJ、BDHX、BDHX2000、CAS、CSCD、CSCD2011_2012、EI、IC、JST、RCCSE、SCOPUS、ZGKJHX、核心刊

摘　　要：Vertical gas holdup distributions in ambient gassed, hot sparged and boiling systems in stirred tanks using multiple 6 hollow blade disc turbines(CD-6)are reported.The local gas holdup in the boiling system is dramatically different from that in the ambient gassed or hot sparged system whether in terms of value or distribution.Under the same total gas flow rate and impeller speed,the local gas holdup is much smaller in the boiling system than that in the ambient gassed or hot sparged system.The hot sparged system has similar vertical gas holdup distributions,with maxima in similar locations but with smaller local gas holdup overall,to those of the ambient gassed system.The designs of existing hot sparged and boiling reactors are based on the ambient gassed system and not optimal.The results are of particular relevance to the design and operation of reactors with hot sparged or boiling liquids.

关 键 词：多层桨搅拌槽 非常温体系  局部气含率分布  气-液分散 热通气反应器  沸腾反应器  电导探针

分 类 号：TQ051.7] TQ027.32