Micromixing efficiency in a multiphase reactor with a foam block stirrer
Micromixing efficiency in a multiphase reactor with a foam block stirrer
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带泡沫块搅拌器的多相反应器中的微混合效率
DOI：
10.1002/cjce.23407
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发表时间：
2019-01
影响因子：
2.1
通讯作者：
Arowo Moses
中科院分区：
文献类型：
--
作者：
Yang Yu Cheng;Yu Xiao Hui;Yu Qing Jie;Yang Shi Ying;Arowo Moses
旋转泡沫反应器（RFR）由固体泡沫块搅拌器组成，而不是搅拌槽中的搅拌器叶片，由于其高传质率，最近受到了大量的研究兴趣。为了更深入地了解RFR，本文利用碘化物-碘酸盐反应体系研究了RFR在分离指数（Xs）方面的微混合效率。系统考察了注入时间、转速、酸浓度、液体积、体积比、气流量等操作参数对分离指标的影响。结果表明，当注射时间超过100 s时，偏析指数保持不变。xs随酸浓度的增加而增加，随转速、液体体积、体积比和气体流量的增加而降低。根据混合模型计算了微混合时间，其范围为1.1 × 10−3 ~ 4.5 × 10−2s，大大缩短了传统反应器的微混合时间。结果表明，RFR具有优异的微混合效率，在化学工业中具有很大的应用潜力。
A rotating foam reactor (RFR), which comprises a solid foam block stirrer as opposed to the agitator blade in stirred tanks, has recently received a significant amount of research interest due to its high mass transfer rates. For a deeper insight into the RFR the work herein investigated the micromixing efficiency of the RFR in terms of segregation index (Xs) using the iodide‐iodate reaction system. The effects of various operating parameters including injection time, rotational speed, acid concentration, volume of liquid, volumetric ratio, and gas flow rate on segregation index were systematically examined. Results showed that the segregation index remained constant when injection time exceeded 100 s. Moreover, theXsincreased with an increase in acid concentration but decreased with an increase in rotational speed, volume of liquid, volumetric ratio, and gas flow rate. Micromixing time was also calculated based on the incorporation model and was established to range from 1.1 × 10−3–4.5 × 10−2s, which is much shorter than that of conventional reactors. The results herein demonstrate that an RFR exhibits excellent micromixing efficiency and has a significant potential for use in chemical industries.
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