Effect of recycle ratio on the cost of natural gas processing in countercurrent hollow fiber membrane system
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Type
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Journal
Article
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Author
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S.
S. M. Lock
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Author
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K.
K. Lau
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URL
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Volume
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21
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Pages
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542-551
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Publication
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Journal
of Industrial and Engineering Chemistry
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Date
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January
25, 2015
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Abstract
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Researchers
adapted a Multi-component Progressive Cell Balance approach to characterize
the separation of the countercurrent hollow fiber membrane module. This was
incorporated within the Aspen HYSYS process simulator. They found the
simulated data is found to be in good agreement with published experimental
result.
The study of the double staged membrane module with permeate recycle system, which was proposed to be the optimum configuration in previous works, was extended by altering the recycle ratio of the permeate stream to study the process economics. Parameter sensitivities of typical membrane selectivity and CO2 feed concentration adapted in industrial application were conducted. Authors highlight the study of high CO2 content because it represents the future expansion of natural gas extraction. They observed the recycle ratio to be an important parameter to be considered in the industrial design process since it significantly affects the gas processing cost. They propose Increasing the recycle ratio to increase the membrane area and compressor power while improving the hydrocarbon recovery, with substantial impact observed at low selectivity membrane and high CO2 feed concentration. |
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