Microchemical processes have inherent advantages in efficiency,safety,energy conservation,small size,and high heat and mass transfer rates,and exhibit enormous development potential in the field of gas-liquid heterogeneous mass transfer and reaction enhancement.This article systematically discussed the current research status of gas-liquid two-phase flow and mass transfer characteristics in microchannels,summarized the gas-liquid two-phase flow shape and distribution in microchannels,analyzed the key factors affecting the two-phase flow shape from the aspects of operating conditions and microchannel design,discussed how multiple factors affect mass transfer and process enhancement,and summarized and classified the currently studied gas-liquid two-phase mass transfer models in microchannels.Based on the flow patterns of gas-liquid two-phase flow in the main flow channels,the latest research progress of various gas-liquid two-phase microreactors was classified and introduced.The article points out that further exploration of strengthening methods for microchemical processes and the development of new gas-liquid microchannel reactors are still the key development directions for future microchemical research.
关键词
微化工技术/气液流动/传质与反应/过程强化
Key words
microchemical technology/gas-liquid flow/mass transfer and reaction/process intensification
维普
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