Micromixing performance and the modeling of a confined impinging jet reactor/high speed disperser
Micromixing performance and the modeling of a confined impinging jet reactor/high speed disperser
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DOI：
10.1016/j.ces.2018.03.032
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发表时间：
2018-07-20
影响因子：
4.7
通讯作者：
Eaglesham, Archie
中科院分区：
文献类型：
--
作者：
Nie, Ao;Gao, Zhengming;Eaglesham, Archie
为了获得更好的微混合性能，设计了一种将有限冲击射流反应器和高速分散器耦合的强化反应器（CIJR-HSD）。利用碘化碘酸盐反应体系研究了操作和结构参数对微混合性能的影响。结果表明，随着转速和转子数量的增加，偏析指数降低；而由于入口流量和填料的存在，影响很小。 CIJR 中心与 HSD 第一个转子之间的耦合距离对离析指数也有不可忽略的影响。微混合时间由吞没模型确定，也可以通过基于流体能量变换的能量耗散模型来评估。结果发现，CIJR-HSD 装置的微混合时间在 0.1-0.3 ms 范围内，而单个 CIJR 的微混合时间在 0.35-0.5 ms 范围内。 (C) 2018 Elsevier Ltd. 保留所有权利。
In order to get a better micromixing performance, an intensification reactor that couples a confined impinging jet reactor and high speed disperser (CIJR-HSD) was designed. The influences of operating and structural parameters on the micromixing performance were investigated by using the iodideiodate reaction system. The results showed that the segregation index decreased with the increase of both the rotational speed and the number of rotors; whilst there was little influence due to both inlet flow rate and the presence of packing. The coupling distance between the centre of the CIJR and the first rotor of the HSD also had a non-negligible effect on segregation index. The micromixing time was determined by the Engulfment model, and could also be evaluated by the energy dissipation model based on fluid energy transformation. It was found that the micromixing time for the CIJR-HSD device was in the range of 0.1-0.3 ms, while that for a single CIJR was in the range of 0.35-0.5 ms. (C) 2018 Elsevier Ltd. All rights reserved.