Gas-liquid mass transfer in micropacked bed reactors is characterized with an automated platform integrated with in-line Fourier transform infrared spectroscopy. This setup enables screening of a multidimensional parameter space underlying absorption with chemical reaction. Volumetric gas-liquid mass-transfer coefficients (k_La) are determined for the model reaction of CO₂ absorption in a methyl diethanolamine/water solution. Parametric studies are conducted varying gas and liquid superficial velocities, packed bed dimensions and packing particle sizes. The results show that k_La values are in the range of 0.12∼0.39 s⁻¹, which is about one-to-two orders of magnitude larger than those of conventional trickle beds. An empirical correlation predicts k_La in micropacked bed reactors in good agreement with experimental data. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译：

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微型填充床反应器中气液传质的自动测量

微填充床反应器中的气液传质的特征是与在线傅立叶变换红外光谱仪集成的自动化平台。该设置能够筛选化学反应吸收基础的多维参数空间。确定在甲基二乙醇胺/水溶液中CO ₂吸收的模型反应的气-液传质系数（k _L a）。参数研究是通过改变气体和液体的表面速度，填料床尺寸和填料颗粒尺寸来进行的。结果表明，k _L a值在0.12〜0.39 s ^-1的范围内。，比传统的滴流床大一到两个数量级。经验相关性预测微填充床反应器中的k _L a与实验数据吻合良好。©2017美国化学工程师学会AIChE J，2017