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S.S.M. Lock,K.K. Lau,A.M. Shariff 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
The separation of the countercurrent hollow fiber membrane module has been characterized adapting a‘‘Multi-component Progressive Cell Balance’’ approach and incorporated within the Aspen HYSYSprocess simulator. The simulated data is found to exhibit good accordance with published experimentalresult. The study of the double staged membrane module with permeate recycle system, which wasproposed to be the optimum configuration in previous works, has been extended by altering the recycleratio of the permeate stream to study the process economics. Parameter sensitivities of typicalmembrane selectivity and CO2 feed concentration adapted in industrial application have beenconducted. The study of high CO2 content is highlighted since it represents the future expansion ofnatural gas extraction considering that most of the remaining fields contain high concentration. It isobserved that the recycle ratio is an important parameter to be considered in the industrial designprocess since it affects the gas processing cost significantly. Increasing the recycle ratio is proposed toincrease the membrane area and compressor power while improving the hydrocarbon recovery, withsubstantial impact observed at low selectivity membrane and high CO2 feed concentration. A tradeoffmust be determined among these parameters for determination of the optimal recycle ratio configuration.
Factors affecting CO2 absorption efficiency in packed column: A review
L.S. Tan,K.K. Lau,M.A. Bustam,A.M. Shariff 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.6
Carbon dioxide (CO2) is a major greenhouse gas that results in the climate change. Hence, efforts are in place to control CO2 emissions into the atmosphere. CO2 removal is also an essential step in many industrial processing operations such as coal gasification, natural gas processing and hydrogen manufacturing. Thus far, absorption is the widely used process in industrial for capturing CO2. This paper presents a review on the factors affecting the absorption efficiency for CO2 capture in packed column. Challenges related to the absorption efficiency improvement and the impacts to real application as well as future directions are highlighted.