Methanol manufacture using pressure swing reforming

Details Methanol manufacture using pressure swing reforming Methanol manufacture using pressure swing reforming

2007-02-27

2007-02-27

Parsa, J. (Department: 1621)

Chemistry: fischer-tropsch processes; or purification or recover

Including regeneration of catalyst

C518S700000, C518S702000, C518S704000, C518S705000, C518S713000, C518S714000, C518S715000, C585S640000

Reexamination Certificate

active

10738782

ABSTRACT:
A process for producing methanol is described in which a hydrocarbon is steam reformed in a reforming zone, and during the reforming stage, of a cyclic steam reformer having a reforming stage and a regeneration stage, the steam reforming being conducted under conditions effective to produce a first effluent stream containing synthesis gas. A fuel and an oxygen-containing gas are combusted in the regeneration stage of the reformer so as to reheat the reforming zone to a temperature sufficient for the reforming stage and generate a flue gas. At least part of the first effluent stream is contacted with a methanol synthesis catalyst under conditions effective to convert synthesis gas to methanol and form a methanol-containing stream and a tail gas stream comprising unreacted carbon monoxide and hydrogen. Hydrogen is separated from at least one of the first effluent stream and the tail gas stream and at least part of the hydrogen is recycled as part of the fuel for the regeneration stage of the cyclic steam reformer.

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