Patent Number: 8,795,912

Title: Systems and processes for operating fuel cell systems

Abstract: Processes and systems for operating molten carbonate fuel cell systems are described herein. A process for operating a molten carbonate fuel cell system includes providing a hydrogen-containing stream comprising molecular hydrogen to an anode portion of a molten carbonate fuel cell; controlling a flow rate of the hydrogen-containing stream to the anode such that molecular hydrogen utilization in the anode is less than 50%; mixing anode exhaust comprising molecular hydrogen from the molten carbonate fuel cell with a hydrocarbon stream comprising hydrocarbons, contacting at least a portion of the mixture of anode exhaust and the hydrocarbon stream with a catalyst to produce a steam reforming feed; separating at least a portion of molecular hydrogen from the steam reforming feed; and providing at least a portion of the separated molecular hydrogen to the molten carbonate fuel cell anode.

Inventors: Cui; Jingyu (Katy, TX), Engwall; Erik Edwin (Houston, TX), Johnston; John William (Kingwood, TX), Joshi; Mahendra Ladharam (Katy, TX), Wellington; Scott Lee (Bellaire, TX)

Assignee: Shell Oil Company

International Classification: H01M 8/18 (20060101); H01M 8/06 (20060101)

Expiration Date: 8/05/12018