泰勒流反应器的流动及反应特性

doi:10.3969/j.issn.0438-1157.2013.06.022

化工学报 ›› 2013, Vol. 64 ›› Issue (6): 2058-2064.DOI: 10.3969/j.issn.0438-1157.2013.06.022

泰勒流反应器的流动及反应特性

叶立, 李立楠, 陈丹, 谢飞

上海理工大学能源与动力工程学院,上海 200093

收稿日期:2012-12-20 修回日期:2013-03-18 出版日期:2013-06-05 发布日期:2013-06-05
通讯作者: 叶立(1977—),女,博士,讲师。
作者简介:叶立(1977—),女,博士,讲师。

Flow and reaction performance of Taylor-vortex flow reactor

YE Li, LI Linan, CHEN Dan, XIE Fei

School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Received:2012-12-20 Revised:2013-03-18 Online:2013-06-05 Published:2013-06-05

摘要/Abstract

摘要： 利用由静态混合器、喷嘴和分气盒组成的新型布气装置在搅拌釜式反应器中诱导生成泰勒流,对反应器流动特性及反应特性进行了实验研究。结果表明,与常规搅拌釜式反应器相比,泰勒流反应器内物料流动更加接近于平推流流型,泰勒流的生成在反应器内构建出局部平推流区域,降低了物料返混程度。反应器反应性能因流动特性改变而得以增强,相同实验条件下,在泰勒流反应器中进行的蔗糖水解反应转化率比在常规搅拌釜式反应器中高出26.7%。在一定操作范围内,局部平推流区域和反应转化率均随搅拌转速或进气量的增加而增大。泰勒流反应器可简化为平推流区和全混流区并联的流动模型,推导出了反应转化率与平推流区域占反应器总体积比率之间的关联关系。

关键词: 泰勒流, 反应器, 停留时间分布, 反应动力学

Abstract: A Taylor-vortex flow reactor was constructed by using a new type of gas distributor consisting of static mixers, nozzles and gas distributor box.Flow and reaction performance of the constructed Taylor-vortex flow reactor was studied experimentally.The results showed that different from conventional stirred tank reactors, fluid flow in Taylor-vortex flow reactor was more close to ideal piston flow.Taylor vortices created local piston flow areas in the reactor and depressed back mixing.Reaction performance of Taylor-vortex flow reactor was also enhanced, and under the same experimental conditions conversion rate of sucrose hydrolysis carried out in the Taylor-vortex flow reactor was 26.7% higher than that in the conventional stirred tank reactor.Within a specific operation range, local piston flow area would expand and reaction conversion rate would increase with increasing agitation speed or air flow rate.A flow model of the Taylor-vortex flow reactor was presented, and reaction kinetic correlations were deduced.

Key words: Taylor-vortex flow, reactor, residence time distribution, reaction kinetics

中图分类号:

TQ052.5

叶立, 李立楠, 陈丹, 谢飞. 泰勒流反应器的流动及反应特性[J]. 化工学报, 2013, 64(6): 2058-2064.

YE Li, LI Linan, CHEN Dan, XIE Fei. Flow and reaction performance of Taylor-vortex flow reactor[J]. CIESC Journal, 2013, 64(6): 2058-2064.

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泰勒流反应器的流动及反应特性

Flow and reaction performance of Taylor-vortex flow reactor

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