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The process of unsteady-state membrane gas separation (fast-permeant impurity removal) with a pulsed retentate flow operation was considered. A semiempirical mathematical algorithm was developed to describe this process taking into account its kinetic characteristics (total cycle time, stripping time and withdrawal time, withdrawal velocity) using the MathCad® software package. Based on the developed...
A mathematical model of the process of gas purification to remove highly permeable impurities with a low concentration in membrane units composed of two or three in-series modules has been considered. Expressions have been obtained for the degree of separation defined as the ratio of the impurity concentration in the feed gas to that in the retentate. The degree of separation depends on the recovery...
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