Interfacial turbulence during the physical absorption of carbon dioxide into non-aqueous solvents.
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概要
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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.
- 公益社団法人 化学工学会の論文
著者
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KOMATSU NOBUYUKI
Chemical Research Institute of Non-Aqueous Solutions, Tohoku Univ.
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HOZAWA MITSUNORI
Chemical Research Institute of Non-Aqueous Solutions, Tohoku Univ.
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IMAISHI NOBUYUKI
Chemical Research Institute of Non-Aqueous Solutions, Tohoku Univ.
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FUJINAWA KATSUHIKO
Chemical Research Institute of Non-Aqueous Solutions, Tohoku Univ.
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