Regeneration method of raw materials for hydrogen supply system of fuel cell

摘要

Disclosed is a method and related system of regenerating a raw material for a hydrogen supply system of a fuel cell. The method includes reacting aluminum and a metal hydroxide to produce hydrogen in the hydrogen supply system of a fuel cell; and recovering an aluminum compound produced simultaneously with the hydrogen in the reaction. An aluminum hydroxide is obtained from the aluminum compound. The aluminum hydroxide is heat-treated to obtain an aluminum oxide. The aluminum oxide is reduced to obtain aluminum. The obtained aluminum is re-supplied as a raw material for producing the hydrogen.

主权项

1. A method of regenerating a raw material for a hydrogen supply system of a fuel cell, the method comprising steps of:
reacting aluminum and a metal hydroxide to produce hydrogen in a hydrogen supply system of the fuel cell; recovering a liquid metal aluminum compound produced simultaneously with the hydrogen in the reacting step; obtaining an aluminum hydroxide from the aluminum compound produced simultaneously with the hydrogen; heat-treating the aluminum hydroxide to obtain an aluminum oxide; reducing the aluminum oxide to obtain aluminum; and re-supplying the obtained aluminum as a raw material for producing hydrogen in the reacting step, wherein, the reacting step further comprises: adding aluminum into a metal hydroxide aqueous solution, wherein the concentration of the metal hydroxide in the aqueous solution ranges from about 20 mass % to about 35 mass %, based on a total weight of the metal hydroxide aqueous solution, and wherein about 3.3 to about 7.5 parts by mole of the metal hydroxide is reacted with about 3 parts by mole of the aluminum to suppress the production of precipitate and provide only the liquid metal aluminum compound.