复合扰流柱的螺旋内构件反应器内流体的宏观混合  

Macro-mixing of Tubular Reactor with Helical Internals Constructed with Pins

作　　者：张丽[1] 谢桂兰[1] 刘云义[1] 吴剑华[1] 

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142

出　　处：《过程工程学报》2010年第6期1071-1075,共5页The Chinese Journal of Process Engineering

基　　金：中央支持地方高校发展专项基金资助项目(编号:2050205);辽宁省高校创新团队基金资助项目(编号:2009T080)

摘　　要：在管式反应器内插入复合扰流柱的螺旋型内构件,采用脉冲示踪法测定了反应器内流体的停留时间分布,研究了器内流体的宏观混合特性,分析了该内构件强化混合的机理.结果表明,复合扰流柱的螺旋型内构件反应器内的流体流动更接近于活塞流,其轴向扩散模型参数Pe为螺旋型内构件反应器的1.02～1.28倍,为不带内构件反应器的1.35～1.77倍.复合扰流柱的螺旋型内构件能显著增强器内的二次流动,从而强化了宏观混合效果.Helical internals constructed with pins were inserted into a tubular reactor. The residence time distributions in the reactor were measured experimentally by applying pulse response method,and the macro-mixing characteristics of the fluid in the reactor were investigated. The enhancement mechanism for mixing by this kind of internal was analyzed. The results show that the fluid flow pattern in the reactor with helical internals constructed with pins is more approach plug flow. The Peclet number of axial diffusion model,Pe,of the reactor with helical internals constructed with pins is 1.02～1.28 times as much as that of the reactor only with helical internals,and 1.35～1.77 times as much as that of the reactor without internals. The internal can significantly increase the secondary flow. Therefore,the macro-mixing is enhanced.

关 键 词：停留时间分布 扰流柱 螺旋管道 管式反应器 宏观混合 

分 类 号：TQ018[化学工程]