Question: A joint venture has been underway for several years to develop a membrane process to separate CO2 and H2S from high-pressure sour natural gas. Typical

A joint venture has been underway for several years to develop a membrane process to separate CO2 and H2S from high-pressure sour natural gas. Typical feed and product conditions are:

Pipeline Gas Feed Gas Pressure, psia Composition, mol%: CH4 1,000 980 97.96 70 0.04 H2S 10 2.00 CO2 20

To meet these conditions, the following hollow-fiber membrane material targets have been established:

Pipeline Gas Feed Gas Pressure, psia Composition, mol%: CH4 1,000 980 97.96

where selectivity is the ratio of permeabilities. PMCO2 = 13.3 barrer, and membrane skin thickness is expected to be 0.5 pm. Make calculations to show whether the targets can realistically meet the pipeline-gas conditions in a single stage with a reasonable membrane area. Assume a feed-gas flow rate of 10 x 103 scfm (0Â°C, 1 atm) withcrossflow.

Pipeline Gas Feed Gas Pressure, psia Composition, mol%: CH4 1,000 980 97.96 70 0.04 H2S 10 2.00 CO2 20

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Subject Removal of CO 2 and H 2 S from highpressure sour natural gas by gas permeation to produce a pipeline gas Given Feed and product conditions Hollowfiber membrane of 05 m m skin thickness with a ... View full answer

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