Abstract: Microchannel reactors are widely used in rapid, strongly exothermic, strongly corrosive and other hazardous reaction processes due to their good mass and heat transfer performances, high safety and mobility. To study the reasons for the enhancement effect of microchannel reactors on the micromixing performance, the influence of Ehrfeld Miprowa microreactor and its internals on micromixing was investigated. The segregation index XS in the Ehrfeld Miprowa microchannel reactor was experimentally determined by using the Villermaux/Dushman parallel competitive reaction system. The influences of the fluid inlet flow rate, concentration of H⁺ and the internal components on XS were analyzed. The experimental results showed that the higher the flow rate was, the better the micromixing performance was. Also the internal components could effectively enhance the micromixing performance of the microchannel reactor.

Key words: microchannel reactor, micromixing, iodide, iodate