Rapid starting methanol reactor system

Details Rapid starting methanol reactor system Rapid starting methanol reactor system

1982-12-27

1984-09-25

Ozaki, George T.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 20, 429 26, 48 61, 422204, 201 15, 201 37, H01M 818

Patent

active

044736223

ABSTRACT:
The invention relates to a methanol-to-hydrogen cracking reactor for use with a fuel cell vehicular power plant. The system is particularly designed for rapid start-up of the catalytic methanol cracking reactor after an extended shut-down period, i.e., after the vehicular fuel cell power plant has been inoperative overnight. Rapid system start-up is accomplished by a combination of direct and indirect heating of the cracking catalyst. Initially, liquid methanol is burned with a stoichiometric or slightly lean air mixture in the combustion chamber of the reactor assembly. The hot combustion gas travels down a flue gas chamber in heat exchange relationship with the catalytic cracking chamber transferring heat across the catalyst chamber wall to heat the catalyst indirectly. The combustion gas is then diverted back through the catalyst bed to heat the catalyst pellets directly. When the cracking reactor temperature reaches operating temperature, methanol combustion is stopped and a hot gas valve is switched to route the flue gas overboard, with methanol being fed directly to the catalytic cracking reactor. Thereafter, the burner operates on excess hydrogen from the fuel cells.

REFERENCES:
patent: 1517526 (1924-12-01), Barnebey
patent: 2246684 (1941-06-01), Hurt
patent: 3321333 (1967-05-01), Palmer
patent: 4206032 (1980-06-01), Friedman et al.

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