Method of generating hydrogen from borohydrides and water

Details Method of generating hydrogen from borohydrides and water Method of generating hydrogen from borohydrides and water

2005-03-15

2005-03-15

Silverman, Stanley S. (Department: 1754)

Chemistry of inorganic compounds

Hydrogen or compound thereof

Elemental hydrogen

C423S648100, C429S010000

Reexamination Certificate

active

06866836

ABSTRACT:
A method is provided that generates hydrogen to power a hydrogen consuming device. Hydrogen is stored on-board a vehicle in dry lithium and/or sodium borohydride particles. Upon demand from the hydrogen consuming device, such as a fuel cell, a portion of the borohydride is conveyed to an axial flow reactor. Water is then injected into the reactor in controlled amounts to hydrolyze the borohydride particles thus, producing hydrogen gas and solid-phase by-products. The reactor includes parallel, closely spanned, counter rotating augers to mix and convey the borohydride particles and solid by-products through the reactor. A separate grinding mechanism can be used to further crush and grind large by-product particles to increase packing efficiencies in a by-products storage vessel, where reaction products will later be stored. Hydrogen gas produced in the reaction is delivered to either a hydrogen buffer container for temporary storage or to the hydrogen consuming device.

REFERENCES:
patent: 5372617 (1994-12-01), Kerrebrock et al.

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