Enhanced hydrogen recovery from effluent gas streams

Details Enhanced hydrogen recovery from effluent gas streams Enhanced hydrogen recovery from effluent gas streams

C - Chemistry, Metallurgy

01

B

48/4

C01B 3/56 (2006.01)

Patent

CA 1250432

- 34 - ENHANCED HYDROGEN RECOVERY FROM EFFLUENT GAS STREAMS Abstract of the Disclosure Effluent gas streams for steam reforming, partial oxidation or coal gasification operations are advantageously treated in shift conversion, scrubbing and pressure swing adsorption units for recovery of a purified, hydrogen-containing product gas stream. By recycling a portion of the waste gas removed from the pressure swing adsorption system to the shift conversion unit and/or to the effluent gas generation operation, enhanced product recovery is achieved without the necessity for employing low temperature shift or for achieving essentially complete removal of the carbon dioxide content of the gas being treated prior to its passage to said pressure swing adsorption system.

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