Hydrogen generation by hydrolysis of hydrides for undersea vehic

Details Hydrogen generation by hydrolysis of hydrides for undersea vehic Hydrogen generation by hydrolysis of hydrides for undersea vehic

1993-05-28

1994-12-13

Warden, Robert J.

Gas: heating and illuminating

Generators

481892, 481895, 366169, 366310, 366325, 366288, 422225, 422229, B01F 312, B01F 704, B01F 708, B01F 714

Patent

active

053726170

ABSTRACT:
A hydrogen generator for hydrolyzing hydrides substantially at stoichiometry to provide hydrogen on demand to a fuel cell is disclosed. The generator comprises a sealable, pressurizable, thermally insulated vessel into which a hydride in granular form is loaded. Water, most of which may be a byproduct from the fuel cell, is controllably introduced into the vessel for reaction with the hydride to generate hydrogen. The rate of introduction of the water is determined by the demand for hydrogen at the fuel cell. Heat transfer apparatus is disposed about the vessel to control the temperature of the reaction. A stirring mechanism is disposed in the vessel to prevent clumping of the hydride, to distribute the water to unreacted hydride, and to disperse the heat of the reaction throughout the hydride mass and thence to the heat transfer apparatus. An outlet from the vessel is provided for transfer of the generated hydrogen to the fuel cell. The system is particularly suitable for use in closed systems such as undersea vehicles.

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