Abstract
The Reidl–Pfleiderer process intensification for H2O2 synthesis is urgently required. Microdispersion technique is becoming one of the highest promising ways, but the microdispersion rules of gas or liquid in the anthraquinone working solution have not been mentioned until now. This study employs an observation platform to investigate the microdispersion performances of hydrogen, oxygen, or water in the anthraquinone working solution to provide reliable data for developing new microchemical processes. The influence of two-phase flow rate, viscosity, and channel size on bubble size in a circular microchannel was studied. A specific surface area higher than 20 000 m2/m3 was obtained when the channel size was 150 μm. A unified mathematical prediction model for the gas–liquid and liquid–liquid microdispersion was developed, and it can be used for the future practical industrial system process intensification.
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