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A general pressure drop model based on liquid holdup of gas-liquid flow in micro-packed beds
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A general pressure drop model based on liquid holdup of gas-liquid flow in micro-packed beds
The understanding of the gas-liquid flow characteristics in a micro-packed bed reactor is still immature,especially for many gas-organic working systems commonly used in industry.Accordingly,this study proposes a platform to investigate the gas-liquid flow characteristics in a micro-packed bed reactor and presents a unified expression for these characteristics of both organic and aqueous liquid phase.The influence of two-phase flow rate,working solution viscosity,and packing particle size on the liquid holdup and pressure drop were studied.The gas-organic working systems results show that the liquid holdup ranges between 0.5 and 0.8 and pressure drop ranges from 50 to 350 kPa·m-1.In particular,a strong correlation between the two flow characteristics parameters(liquid holdup and pressure drop)was proposed for the first time.Finally,a general pressure drop mathematical prediction model in micro-packed bed were developed.
Gas-liquid flowMicro-packed bed reactorsLiquid holdupPressure dropMathematical model
Junjie Wang、Lin Sheng、Jiang Deng、Guangsheng Luo
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The State Key Laboratory of Chemical Engineering,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China
Gas-liquid flow Micro-packed bed reactors Liquid holdup Pressure drop Mathematical model
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