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http://dx.doi.org/10.3795/KSME-B.2016.40.12.761

Simulation Model of Membrane Gas Separator Using Aspen Custom Modeler  

Song, Dong-keun (Korea Institute of Machinery and Materials)
Shin, Gahui (Dept. of Mechanical Engineering, Chungnam Nat'l Univ.)
Yun, Jinwon (Dept. of Mechanical Engineering, Chungnam Nat'l Univ.)
Yu, Sangseok (Dept. of Mechanical Engineering, Chungnam Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.40, no.12, 2016 , pp. 761-768 More about this Journal
Abstract
Membranes are used to separate pure gas from gas mixtures. In this study, three different types of mass transport through a membrane were developed in order to investigate the gas separation capabilities of a membrane. The three different models typically used are a lumped model, a multi-cell model, and a discretization model. Despite the multi-cell model producing similar results to a discretization model, the discretization model was selected for this investigation, due to the cell number dependence of a multi-cell model. The mass transport model was then used to investigate the effects of pressure difference, flow rate, total exposed area, and permeability. The results showed that the pressure difference increased with the stage cut, but the selectivity was a trade-off for the increasing pressure difference. Additionally, even though permeability is an important parameter, the selectivity and stage cut of the membrane converged as permeability increased.
Keywords
Membrane Gas Separation; Lumped Model; Multi-Cell Model; Discretization Model;
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