Chemistry of inorganic compounds – Hydrogen or compound thereof – Elemental hydrogen
Reexamination Certificate
2005-04-12
2005-04-12
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Hydrogen or compound thereof
Elemental hydrogen
C252S373000, C429S010000, C422S198000, C422S198000, C422S206000, C422S211000
Reexamination Certificate
active
06878362
ABSTRACT:
In a fuel processor based on autothermal cyclic reforming process, the fuel processor having a reformer, the reformer having two reactors with integrated heat exchangers, the two reactors cycling between a reforming step and a regeneration step, a method of generating hydrogen gas includes receiving a mixture of fuel and steam in the reformer reactor operating in a reforming step to produce hydrogen-rich reformate gas. The fuel is delivered from a fuel supply and the steam is generated by a heat recovery steam generator (HRSG). The reformate gas is fed to a shift reactor to reduce the concentration of carbon monoxide (CO) gas present in the reformate gas. Product gas generated by the shift reactor is received in a condenser to recover heat from the product gas. In one embodiment output gas stream from the condenser is supplied to a CO oxidizer to further reduce the CO concentration. The output gas stream from the CO oxidizer is supplied to an anode of a fuel cell, the fuel cell including a cathode for receiving ambient air to initiate an electrochemical reaction with the gas stream received by the anode. In another embodiment the output gas stream from the condenser is supplied to a Pressure Swing Adsorber (PSA). The output gas is high-purity hydrogen which can be utilized for industrial hydrogen or hydrogen vehicle refueling applications.
REFERENCES:
patent: 5339754 (1994-08-01), Lyon
patent: 5509362 (1996-04-01), Lyon
patent: 5827496 (1998-10-01), Lyon
patent: 6007699 (1999-12-01), Cole
Kastanas George N.
Kumar Ravi Vipperla
General Electric Company
Medina Maribel
Silverman Stanley S.
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