A new impinging stream–rotating packed bed reactor for improvement of micromixing iodide and iodate

A novel concept of a liquid–liquid contact reactor, the so-called impinging stream–rotating packed bed (IS–RPB), was presented for improvement of micromixing iodide and iodate. The micromixing efficiency of IS–RPB was studied by adopting iodide–iodate reaction system. The effects of operational conditions (e.g. high gravity factor, liquid flow rate, liquid flow ratio and acid concentration) on micromixing efficiency (characterized by segregation index Xs) were investigated. In addition, the effects of different impinging distance and impinging angle on micromixing efficiency were also considered. Besides, IS, RPB and IS–RPB reactors were contrasted with micromixing characteristics in the same experimental conditions. Comparison with other mixing devices, IS–RPB reactor has better micromixing characteristics than other reactors, which has a good application prospect.