转盘反应器亲疏水相间表面结构微观混合性能

Microscopic mixing performance of hydrophilic-hydrophobic phase interfaces in rotating disk reactors

设计并制备不同亲疏水相间表面结构的转盘反应器,基于碘化物-碘酸盐平行竞争反应体系,研究不同相间结构、转速以及流量对微观混合性能的影响,分析亲疏水临界次数对混合的影响。结果表明,提高转盘转速可以有效降低离集指数,且转速越高,微观混合效果越好;随着反应物流量增加,微观混合性能均具有最佳流量点;增加亲疏水相间层数能够增加液体流经亲疏水间隔临界处次数,有效强化微观混合性能;建立了亲疏水相间表面结构离集指数X_(S)预测关联式。研究结果有助于深入理解反应器表面非均匀浸润性对微观混合性能的影响机理,为反应器结构设计与优化提供理论与应用基础。

A rotating disk reactor with different hydrophilic-hydrophobic phase interface structures was designed and prepared.Based on the parallel competitive reaction system of iodide-iodate,the effects of different phase interface structures,rotation speed and flow rates on microscopic mixing performance were investigated.The influence of hydrophilic-hydrophobic critical occurrences on mixing was also analyzed.The results show that increasing the rotation speed effectively reduces the segregation index,and higher speeds lead to better microscopic mixing effects.With the increase in reactant flow rates,optimal flow rate points for microscopic mixing performance are observed.Increasing the number of hydrophilic-hydrophobic phase interfaces enhances the number of occurrences of liquid passing through the critical region,effectively strengthening the microscopic mixing performance.A predictive correlation equation for the segregation index X_(S)of hydrophilic-hydrophobic phase interface structures was established.This study contributes to a deeper understanding of the impact mechanism of reactor surface non-uniform wettability on microscopic mixing performance,providing a theoretical and applied foundation for the design and optimization of reactor structures.