JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | |
INTERRACIAL TURBULENCE DURING THE PHYSICAL ABSORPTION OF CARBON DIOXIDE INTO NON-AQUEOUS SOLVENTS | |
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】
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