INTERRACIAL TURBULENCE DURING THE PHYSICAL ABSORPTION OF CARBON DIOXIDE INTO NON-AQUEOUS SOLVENTS

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

KATSUHIKO FUJINAWA¹  MITSUNORI HOZAWA¹  NOBUYUKI IMAISHI¹  NOBUYUKI KOMATSU¹ 

[1] Chemical Research Institute of Non-Aqueous Solutions, Tohoku Univ.

关键词: Absorption;    Mass Transfer;    Interfacial Turbulence;    Non Aqueous Solvent;    Carbon Dioxide;    Marangoni Effect;    Schlieren Method;    Visualization;   

DOI  :  10.1252/jcej.17.173

来源: Maruzen Company Ltd

【 摘 要 】

References(17)Cited-By(10)Interfacial turbulence during the physical absorption of CO2 into non-aqueous solvents such as methanol and toluene was investigated experimentally from the point of view of the mass transfer rates. Liquid-phase mass transfer coefficients were measured in the range of gas-liquid contact time t = 0.1-1000 s, using a wetted-wall column, a two-dimensional source flow cell and a quiescent liquid cell, and were compared with calculated values from the penetration theory. The gas-liquid interface during absorption was observed by schlieren photography. It was found that interfacial turbulence owing to the Marangoni effect occurs around t = 0.1 s and succeedingly a density driven convection is superimposed on the turbulence after t = 5-50 s when CO2 is absorbed into non-aqueous (organic) solvents. It is also found that Marangoni-type turbulence occurs in the condition of negative Marangoni number.

【 授权许可】

Unknown