METHOD OF PRODUCTION AND STORING OF HYDROGEN BY MEANS OF HYDROLYSIS OF MAGNESIUM FOR AUTONOMOUS POWER INSTALLATIONS WITH ELECTROCHEMICAL GENERATORS Russian patent published in 2004 - IPC

FIELD: production of hydrogen by stand-alone power installations.

SUBSTANCE: the invention presents a method of production and storing of hydrogen by means of hydrolysis of magnesium for autonomous power installations with electrochemical generators with a cycle of operation from several hours up to several thousand hours. The method provides for production of hydrogen by a hydrolysis of magnesium by feeding of water in the form of the saturated or superheated steam. The used magnesium may have the form of a sheet, a wire, a granule of a correct or incorrect form under a strict condition that one of the linear dimensions of the used form did not exceed 1-2 mm. For reaction they use the water produced in the electrochemical generator, and also use heat generated during the reaction. In the power installations with small autonomy - up to several hours - a hydrolysis is carried out under the temperature of 400-450°С. At that they use a method of the container storage and change of the completely exhausted containers. In the power installations with the greater autonomy the process is realized at 120-150°С, at that they use non-replaceable containers and removal of the reaction products is carried out by treatment of magnesium oxide with an acid, for example with hydrochloric acid, with production of a magnesium salt, its following dissolution and extrusion from the container. Flow control of produced hydrogen is conducted by control over an amount of the fed water having the form of its steam. For decrease of power input used for preparation for conduct of reaction of a hydrolysis the container (a store) of a magnesium is partitioned and one or several sections are used as "an igniter cord". The technical result consists in a significant increase of mass percent of produced hydrogen provided that introduction from the outside of raw products and withdrawal of the reaction products during the power installation autonomous operation are missed.

EFFECT: the invention allows significantly to increase the mass percent of produced hydrogen at exclusion of introduction of raw products and withdrawal of the products of react ion.

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