Mass Transfer in Heterogeneous Distillation
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概要
- 論文の詳細を見る
An experimental study on mass transfer in heterogeneous distillation was made with wetted-wall columns of different lengths for an ethanol-benzene-water system under total reflux conditions. The observed local diffusion fluxes obtained from the data of shorter distillation paths agree well with the theoretical values of mass transfer in a tube, but the average diffusion fluxes of longer distillation paths deviate from the theoretical ones.Simulation of heterogeneous distillation with a wetted-wall column is carried out using the theoretical diffusion flux in a tube. The predicted concentrations and reflux flow rates at the top of the column showed good agreement with the observed data of longer distillation paths obtained by a longer column. The simulation results show that a large concentration driving force causes a longer distillation path and results in a large variation along the column. Also the deviation of the average diffusion flux from the theoretical value is demonstrated and explained by being made dimensionless with the average or non-local concentration driving force. Furthermore, the length of the distillation path is affected considerably by the bottom concentration and the vapor phase Reynolds number.
- 社団法人 化学工学会の論文
著者
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SAITO Noritsuna
Department of Chemical Engineering, Tokyo Institute of Technology
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ASANO Koichi
Department of Chemical Engineering, Tokyo Institute of Technology
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Kosuge H
Tokyo Inst. Technol. Tokyo Jpn
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Kosuge Hitoshi
Department Of Chemical Engineering Graduate School Of Science And Engineering Tokyo Institute Of Tec
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Asano K
Department Of Chemical Engineering Tokyo Institute Of Technology
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Asano Koichi
Department Of Chemical Engineering Tokyo Institute Of Technology
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Saito Noritsuna
Department Of Chemical Engineering Tokyo Institute Of Technology
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Asano Koichi
Department of Applied Chemistry, Utsunomiya University
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