Temperature and pressure dependence of membrane permeance and its effect on process economics of hollow fiber gas separation system

Conventional hollow fiber models in process simulators usually assume constant membrane permeance i.e., independent of pressure and temperature. In this work, hollow fiber membrane model has been proposed to cater the effects of temperature and pressure on membrane permeance. The proposed model is i...

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Bibliographic Details
Published in:Journal of membrane science 2013-03, Vol.430, p.44-55
Main Authors: Ahmad, Faizan, Lau, K.K., Shariff, A.M., Fong Yeong, Yin
Format: Article
Language:English
Subjects:
artificial membranes
carbon dioxide
Chemistry
Colloidal state and disperse state
Exact sciences and technology
Gas separation
General and physical chemistry
Hollow fiber membrane
Joule thomson effect
Membrane permeance
Membranes
natural gas
Process simulation
temperature
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Summary:Conventional hollow fiber models in process simulators usually assume constant membrane permeance i.e., independent of pressure and temperature. In this work, hollow fiber membrane model has been proposed to cater the effects of temperature and pressure on membrane permeance. The proposed model is incorporated with Aspen HYSYS as a user defined unit operation in order to study the performance of gas separation system. The simulated model is validated by experimental and published data. The temperature drop due to Joule Thomson effect and its contribution to the change in membrane permeance has also been investigated. Similarly, the effect of pressure on membrane permeance has been studied. The influence of these effects on the separation performance and process economics has been investigated for the separation of CO2 from natural gas. The proposed hollow fiber membrane model has potential to be applied for design, optimization and scale up of wide range of gas separation systems. ► Hollow fiber membrane model with temperature and pressure effect on permeance. ► Incorporation of model in Aspen HYSYS as user defined unit operation. ► A case study of CO2 removal from natural gas. ► Influence of non ideal effect on process performance and economics.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2012.11.070