摘要
微观混合的研究对于更好地认识和处理一些受其影响的快速反应过程(聚合、结晶等)具有重要的指导意义。通过设计一台能实现沿程取样的旋转填充床,同时通过采用一种平行竞争微观混合体系-碘化物-碘酸盐反应体系,考察了填料的不同径向位置离集指数的分布及各操作参数对旋转填充床微观混合效率的影响。本文第一次从实验上证实了旋转填充床填料的端效应区在强化微观混合方面的重要作用,系统的总结了各操作参数对微观混合的影响。与其他反应器相比,旋转填充床具有更好的微观混合效率。
Studies of micromixing （mixing at the molecular scale） can give an indication of the best way to cari＇y out important processes such as polymerization, crystallization and competing fast chemical reactions. By adopting the iodide-iodate reaction system as an index, the distribution of segregation index （Xs） along the radial direction of packing and the effects of different operational conditions （e. g. rotational speed, flow rates） on micromixing efficiency of a novel rotating packed bed （RPB） have been investigated. As a result, the importance of inlet region packing in increasing the micromixing efficiency in an RPB was confirmed experimentally for the first time. Compared with other mixing devices, the RPB has a distinct advantage in terms of improving micromixing efficiency.
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第4期363-366,共4页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
国家杰出青年基金(20325621)
