Self-regenerating method and system of removing oxygen and water

Details Self-regenerating method and system of removing oxygen and water Self-regenerating method and system of removing oxygen and water

1977-12-19

1980-08-05

Carter, Herbert T.

Chemistry of inorganic compounds

Hydrogen or compound thereof

Elemental hydrogen

422190, 422193, 422212, 422223, 423248, 423644, 123 3, C01B 130, C01B 135, C01B 600

Patent

active

042161983

ABSTRACT:
Oxygen and water impurities are cleaned from hydrogen, which is to be stored in tanks containing a hydride-forming metallic alloy, using a novel, self-cleaning filter system. The impurity-containing hydrogen gas is first passed through a catalyst bed comprising a catalyst which is adapted to convert oxygen in the presence of hydrogen to water. The gas then passes through an adsorbent capable of adsorbing water from the gas stream, thereby substantially removing water impurities from the hydrogen gas. The purified hydrogen gas is charged into a storage tank containing a hydride-forming metallic alloy which absorbs the hydrogen by reacting therewith to form hydrogen-loaded metallic hydride. When the storage tank is to be discharged, the hydrogen-loaded metallic hydride in the tank is treated to release hydrogen gas therefrom. The released gas is passed back through the adsorbent, thereby cleaning the adsorbent of water impurities deposited therein when the tank was being charged with hydrogen. The hydrogen gas containing water impurities is then forwarded to a hydrogen utilization unit for further use of the hydrogen.

REFERENCES:
patent: 2822888 (1958-02-01), MacLaren
patent: 3033642 (1962-05-01), Bukata et al.
patent: 3793435 (1974-02-01), Reilly et al.
patent: 3969481 (1976-07-01), Murray et al.
patent: 4040410 (1977-08-01), Libowitz
patent: 4108605 (1978-08-01), Billings

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