Research Progress on Gas-liquid Two-phase Flow and Numbering-up Strategy in Microchannel

Abstract

The key step of micro-chemical technology from basic research to industrial application is the process scale-up. To achieve high throughput, easy controllability and continuous production, the studies on micro-chemical process are primarily focused on the stability of multiphase flow in single microchannel and the numbering-up strategy of microchannels. In this paper, the flow pattern of gas-liquid two-phase flow and its influence on mass transfer in single microchannel are reviewed. The flow stability and mass transfer efficiency of gas-liquid two-phase flow in microchannel are clarified. Meanwhile, the application status of micro-chemi-cal technology is reviewed, which proves the potential of micro-chemical technology in industrial application. Furthermore, the research progress of numbering-up strategy of microchannel including symmetric and asym-metric amplification are reviewed and the flow distribution and its influence on the mass transfer in parallel mi-crochannels are summarized. Finally, the future research directions are prospected.