Mass Transfer Across Gas–Liquid Interface in a Capillary Tube

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Satoru Komori¹  Yasumasa Ito¹ 

[1] Department of Mechanical Engineering and Science, and Advanced Research Institute of Fluid Science and Engineering, Kyoto University

关键词: Gas Absorption;    Micro Channel;    Mass Transfer;    Multiphase Flow;    Microfluidics;   

DOI  :  10.1252/jcej.08we002

来源: Maruzen Company Ltd

【 摘 要 】

References(20)Gas absorption experiments across the gas–liquid interface in a capillary tube were carried out to investigate the mass transfer efficiency in a micro channel. The test channel used was a glass capillary tube having a diameter of 0.5 mm and a length of 30 mm or 200 mm. Carbon dioxide (CO2) and distilled water were supplied into the capillary tube. The flow rates were varied widely to form various types of flow patterns. The CO2 absorption rate was measured by a total organic carbon meter. The results show that the gas absorption rate increases remarkably with the superficial gas velocity. The volumetric mass transfer coefficient, kLa, and the superficial gas velocity generally have a linear relationship, regardless of the superficial liquid velocity. The change of flow pattern does not drastically affect the kLa profile. The values of kLa in a micro-tube are generally larger than those measured by conventional gas absorption equipment.

【 授权许可】

Unknown