新型多通道微反应器的设计与性能研究

发布时间：2018-05-27 22:08

本文选题：微反应器 + 数增放大　；参考：《北京化工大学》2015年硕士论文

【摘要】：微反应器由于其优异的性能受到了越来越多研究者的重视,但微反应器存在着集成结构复杂、加工难度大,难以检测和控制等缺陷,在工业上应用的较少。本文为解决微反应器放大问题,设计制造了两种新型反应器。主要研究内容如下：(1)设计了两种反应器,一种为适合高流速高处理量的多通道微撞击流反应器(multi-channel MISR),另一种为适用于低流速下的集束式对流微反应器(C-CFMCR)。(2)使用Villermaux/Dushman反应体系评价多通道微撞击流反应器的微观混合性能。增大反应流体雷诺数和保持体积流量比为1,可显著提高多通道微撞击流反应器的微观混合效率。基于团聚模型计算得到的多通道微撞击流反应器的微观混合时间为0.9-20 ms。在多通道微撞击流反应器中制备出平均粒径较小且粒径分布较窄的纳米硫酸钡颗粒。(3)集束式对流微反应器的微观混合性能在一定范围内随着流体体积流量的增大而增大,但当流量增大到一定程度后反而有所下降。根据团聚模型法计算得到反应器的微观混合时间为0.32-5.69 ms。在集束式对流微反应器内制备得到的硫酸钡颗粒粒径约为20 nm,明显优于搅拌釜式反应器。本文为微反应器的放大提供了新的思路,多通道微撞击流反应器和集束式对流微反应器实现了微反应器在一定规模上的放大,并且具有良好的混合效果,具有很大的工业应用潜力。
[Abstract]:The microreactor has attracted more and more attention because of its excellent performance. However, there are many defects in the microreactor, such as complex structure, difficult processing, difficult to detect and control. In this paper, two kinds of new reactors are designed to solve the problem of microreactor magnification. 1) two kinds of reactors are designed, one is a multi channel micro impinging flow reactor (multi-channel MISR) suitable for high velocity and high velocity, and the other is a cluster type convective microreactor (C-CFMCR) suitable for low flow velocity. (2) the micro mixing performance of the multichannel micro impinging flow reactor is evaluated using the Villermaux/Dushman reaction system. The ratio of the Reynolds number and the volume flow ratio is 1, and the micro mixing efficiency of the multichannel micro impinging flow reactor can be significantly improved. The micro mixing time of the multi channel micro impinging flow reactor calculated by the aggregation model is 0.9-20 Ms. in the multi-channel micro impingement reactor to prepare the smaller average particle size and the narrow particle size distribution. Barium sulfate particles. (3) the micro mixing performance of the cluster type convective microreactor increases with the increase of volume flow rate in a certain range, but decreases when the flow rate increases to a certain extent. The micro mixing time of the reactor is calculated to be 0.32-5.69 Ms. in the cluster type convective microreactor based on the aggregation model method. The prepared barium sulfate particle size is about 20 nm, which is obviously superior to the stirred tank reactor. This paper provides a new idea for the amplification of microreactor. The multi-channel micro impinging flow reactor and the cluster type convective microreactor have realized the magnification of the microreactor on a certain scale, and have good mixing effect. It has a great industry. Application potential.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ052

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