Aluminum water hydrogen production system and method capable of circularly and comprehensively utilizing electric energy to electrolyze aluminum

Abstract

The invention discloses an aluminum water hydrogen production system capable of circularly and comprehensively utilizing electric energy to electrolyze aluminum, which comprises a renewable energy source power generation device, wherein the renewable energy source power generation device is used for supplying electric energy to a circulating aluminum powder production device; a circulating aluminum powder production device, wherein the circulating aluminum powder production device is used for electrolyzing aluminum oxide to obtain aluminum powder, and conveying the aluminum powder to an aluminum hydrogen production device; an aluminum water hydrogen production device, wherein the aluminum water hydrogen production device is used for carrying out hydrogen production reaction on the aluminumpowder to obtain hydrogen and aluminum oxide, drying and storing the hydrogen, drying the aluminum oxide, and returning the aluminum oxide to the circulating aluminum powder production device for continuous electrolysis to obtain the aluminum powder; the invention also discloses a method for producing hydrogen from aluminum water, according to the invention, the local elimination of renewable energy can be achieved; the transportation efficiency is improved by 10 times by changing gaseous hydrogen transportation into solid aluminum transportation, and the transportation safety is greatly enhanced; the deep coupling is achieved in the hydrogen production process and the aluminum hydroxide decomposition process, so that the heat energy is fully utilized, and the power consumption cost of on-site hydrogen production is reduced.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of new energy and chemical hydrogen production, and in particular to a hydrogen production system and method for aluminum water that can recycle and comprehensively utilize electric energy to electrolyze aluminum. Background technique [0002] At present, the sustainable development of the automobile industry is facing severe energy and environmental challenges. The development of new energy vehicles has become a global consensus. Among them, fuel cell vehicles are unanimously recognized by the industry as the most advanced vehicles due to their advantages such as high energy density, cruising range equivalent to traditional vehicles, short refueling (compressed hydrogen) time (5-10 minutes), zero emissions and no secondary pollution from waste batteries. industry's ultimate goal. [0003] Due to the extremely small density of hydrogen (under standard conditions, the density of ...

AI Technical Summary

Problems solved by technology

There are usually two technical routes: one is to replace water with alkali aqueous solution, and use OH - Ions destroy the oxide film on the aluminum surface to form water-soluble AlO 2 - , but the generated hydrogen will take out the lye in the high-temperature system and cause damage to the fuel cell stack, so it is necessary to remove the alkaline components, and the purification technology is complicated and inconvenient to use; the second is to add gallium, Indium, zinc, tin, or metal oxides, hydroxides, and amalgams form aluminum composite materials, but mechanical mixing cannot achieve sufficient mixing of raw materials, resulting in uneven hydrolysis rates of aluminum, and the cost of gallium, indium, tin, mercury, etc. Higher and higher mercury toxicity

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