초록

The present invention involves an efficient process for recovering hydrogen from a gas mixture containing hydrogen and at least one other component. Separation is effected by integrating a semi-permeable membrane based unit with a non-membrane type separation unit.

대표청구항 ▼

A process for removing hydrogen from a feed gas mixture comprising hydrogen and at least one other component, said process comprising providing an additional degree of freedom for adjusting the process parameters by: (a) treating said feed gas mixture in a non-membrane separation unit to produce a h

A process for removing hydrogen from a feed gas mixture comprising hydrogen and at least one other component, said process comprising providing an additional degree of freedom for adjusting the process parameters by: (a) treating said feed gas mixture in a non-membrane separation unit to produce a hydrogen-enriched stream and a hydrogen-depleted stream; (b) withdrawing at last a portion of the hydrogen-enriched stream from the non-membrane separation unit; (c) feeding said portion of said hydrogen-enriched stream to a membrane separation unit, wherein said hydrogen-enriched stream is separated to form a hydrogen-rich stream and a hydrogen-lean stream; (d) recycling the hydrogen-lean stream to the non-membrane separation unit for further treatment and separation to produce a hydrogen-depleted stream; and (e) recovering the hydrogen-rich stream from the membrane separation unit.