Steam reformer for methane with internal hydrogen separation...

Details Steam reformer for methane with internal hydrogen separation... Steam reformer for methane with internal hydrogen separation...

2005-04-19

2005-04-19

Silverman, Stanley S. (Department: 1754)

Chemistry of inorganic compounds

Hydrogen or compound thereof

Elemental hydrogen

C048S1970FM, C048S198700, C422S186220, C422S186220, C422S198000, C422S211000

Reexamination Certificate

active

06881394

ABSTRACT:
Preferred embodiments of the present invention generate a synthesis gas with a molar ratio of hydrogen to carbon monoxide of approximately 2:1 required for Fischer-Tropsch synthesis. Additional hydrogen produced in the steam reforming of methane beyond the requirements for the Fischer-Tropsch reaction is separated from the product gases of the reformer by the use of a hydrogen permeable membrane. Air is passed over the outside of the tube. As the hydrogen contacts the air, it is combusted with oxygen in the air to form water and release the heat necessary to drive the steam reforming reaction.

REFERENCES:
patent: 5510056 (1996-04-01), Jacobs et al.
patent: 5637259 (1997-06-01), Galuszka et al.
patent: 6231831 (2001-05-01), Autenrieth et al.
A.K. Prabhu et al.,“Supported nickel catalysts for carbon dioxide reforming of methane in plug flow and membrane reactors,”Applied Catalysis A: General 183 (1999) 241-252.
A.K. Prabhu et al.,“Development of a Hydrogen Selective Ceramic Membrane and Its Application for the Conversion of Greenhouse Gases,”Chemistry Letters (1999) 213-14.
Harold Gunardson,“Synthesis Gas Manufacture,”Chapter 2, Industrial Gases In Petrochemical Processing, Marcel Dekker, Inc. (1998) 41-80.

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