System for operating solid oxide fuel cell generator on diesel f

Details System for operating solid oxide fuel cell generator on diesel f System for operating solid oxide fuel cell generator on diesel f

1996-10-09

1997-11-11

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 19, 429 30, H01M 806

Patent

active

056861966

ABSTRACT:
A system is provided for operating a solid oxide fuel cell generator on diesel fuel. The system includes a hydrodesulfurizer which reduces the sulfur content of commercial and military grade diesel fuel to an acceptable level. Hydrogen which has been previously separated from the process stream is mixed with diesel fuel at low pressure. The diesel/hydrogen mixture is then pressurized and introduced into the hydrodesulfurizer. The hydrodesulfurizer comprises a metal oxide such as ZnO which reacts with hydrogen sulfide in the presence of a metal catalyst to form a metal sulfide and water. After desulfurization, the diesel fuel is reformed and delivered to a hydrogen separator which removes most of the hydrogen from the reformed fuel prior to introduction into a solid oxide fuel cell generator. The separated hydrogen is then selectively delivered to the diesel/hydrogen mixer or to a hydrogen storage unit. The hydrogen storage unit preferably comprises a metal hydride which stores hydrogen in solid form at low pressure. Hydrogen may be discharged from the metal hydride to the diesel/hydrogen mixture at low pressure upon demand, particularly during start-up and shut-down of the system.

REFERENCES:
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patent: 4395468 (1983-07-01), Isenberg
patent: 4702971 (1987-10-01), Isenberg
patent: 5143800 (1992-09-01), George et al.
patent: 5284717 (1994-02-01), Yamase et al.
patent: 5413879 (1995-05-01), Domeracki et al.

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