Controlling the temperature at which fuel cell exhaust is oxidized
Patent 6551733 Issued on April 22, 2003. Estimated Expiration Date: 
November 30, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 30, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesFuel cell power plant Method of generating high-purity nitrogen gas Air manager system for recirculating reactant air in a metal-air battery Method of and apparatus for reforming fuel and fuel cell system with fuel-reforming apparatus incorporated therein Control system for providing hydrogen for use with fuel cells Recovering heat from fuel cell exhaust Patent #: 6370878 InventorsAssigneeApplicationNo. 728227 filed on 11/30/2000US Classes:429/24, Temperature dependent429/13, Process of operating429/17Generating, regenerating or recycling reactantExaminersPrimary: Ryan, PatrickAssistant: Cantelmo, Gregg Attorney, Agent or FirmForeign Patent References
International ClassesH01M 008/04H01M 008/12 AbstractA fuel cell system includes a fuel cell stack that generates electrical energy during operation by reacting two streams of reactant gases. The fuel cell stack also produces a fuel cell exhaust stream. An oxidizer unit is positioned to receive the fuel cell exhaust stream. The oxidizer unit oxidizes at least a part of the fuel cell exhaust stream in an oxidizing gas stream during operation. A temperature sensor is positioned to sense a temperature of the oxidizer unit and an input system provides the oxidizer unit with at least the stoichiometric amount of the oxidizing gas stream during operation. The input system controls the amount of the oxidizing gas stream in excess of the stoichiometric amount provided to the oxidizer unit in response to the temperature of the oxidizer unit. |
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