Process for the co-production of gaseous carbon dioxide and...

Details Process for the co-production of gaseous carbon dioxide and... Process for the co-production of gaseous carbon dioxide and...

C - Chemistry, Metallurgy

01

B

183/24, 23/29

C01B 3/56 (2006.01) C01B 31/20 (2006.01)

Patent

CA 1326343

ABSTRACT PROCESS FOR THE CO-PRODUCTION OF CARBON DIOXIDE AND HYDROGEN A process for the co-production of hydrogen and carbon dioxide comprises first treating the effluent of a methane steam reformer in a pressure swing adsorption (PSA) unit. The PSA unit adsorbs carbon dioxide and other impurities and yields an enriched hydrogen gas stream. During regen- eration of the PSA unit, a purge gas is produced, which is combusted with oxygen and recycled exhaust gas to form carbon dioxide gas and water. The combustion step pro- duces electricity which can be used to liquify the carbon dioxide and hydrogen products, and to run process compres- sors. Overall, the process efficiently and economically produces both hydrogen and carbon dioxide for industrial use.

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