JP2006321701A - Manufacturing system of gaseous hydrogen using aluminum and water as raw materials - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the cost of a raw material, and an apparatus and its operation in the manufacture of gaseous hydrogen and an aluminum compound including aluminum oxide or aluminum hydroxide. <P>SOLUTION: Gaseous hydrogen and fine particles of the by-produced aluminum compound are manufactured by bringing scrap aluminum used as a low cost raw material into contact with water with the addition of a recyclable catalyst (mercury or the like) as a reaction accelerating means and an additive (citric acid or the like) having an action to accelerate the reaction. As the reaction apparatus, a simple and low cost apparatus operated under a normal temperature and pressure is used. The by-produced aluminum compound fine particles are easily utilized for the manufacture of a product using metal aluminum or other aluminum as a raw material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

Technology field

  The present invention relates to a method for producing an aluminum compound containing hydrogen gas and aluminum oxide or aluminum hydroxide through the mutual reaction process using aluminum and water as raw materials.

  Conventional hydrogen production technologies include water electrolysis, methanol production through a reformer, city gas and natural gas production, solar and ceramic catalyst There are a method of manufacturing from water using a method and a method of manufacturing using the action of microorganisms.

  In any of the conventional techniques, since a considerable amount of cost is required for the apparatus or operation, there is a limit to reducing the price of the produced hydrogen gas and the like, which has been a major industrial issue.

Under normal temperature and pressure, aluminum and water hardly react, but the present invention uses a catalyst and an additive to react these aluminum and water under normal temperature and pressure, or if necessary, temperature, pressure, etc. The present invention provides a method for producing hydrogen gas and an aluminum compound easily and inexpensively through this reaction process, while greatly promoting in a moderate environment.
Aluminum oxide film that is formed on the surface of aluminum and mercury and inhibits the amalgamation reaction while aluminizing the aluminum material using mercury as a catalyst to promote the reaction between aluminum and water The mercury oxide film is dissolved and removed by adding an additive such as citric acid to water to make an acidic solution, thereby promoting the amalgamation reaction.

(1) Inexpensive scrap aluminum and water can be used as raw materials, and the equipment is simple and inexpensive. In addition, special heating and pressurization are not required in principle and its operating cost is low. There is a significant reduction effect.
(2) Since aluminum oxide fine particles containing aluminum oxide and aluminum hydroxide produced as a by-product of the hydrogen gas production process can be used as raw materials, products made of metal aluminum or other aluminum materials can be easily manufactured. This has the effect of reducing and contributing to effective use of resources.
(3) There are significant industrial effects, such as being able to use as a power source for moving bodies including automobiles that run with water and aluminum.

Put an appropriate amount of water in glass, plastic, stainless steel, or other sealed container (1) that does not easily react with mercury used as a catalyst and is not affected by acidic aqueous solution, and it is added with citric acid and other acidic solution additives. Is dissolved in several to several tens of percent to form an acidic aqueous solution (2), and an appropriate amount of mercury acting as a catalyst (3) is added to the solution, and an arbitrary shape such as a lump, plate, piece, powder, etc. An appropriate amount of the aluminum material (4) is added.
The aluminum oxide film and mercury oxide film which are formed on the surface of mercury as the input aluminum (4) and catalyst (3) and inhibit the amalgamation are dissolved and removed by the acidic aqueous solution (2), and aluminum and Mercury comes into direct contact and the amalgamation of the aluminum material is promoted. As a result, the reaction between the aluminum material (4) and the aqueous solution (2) is activated. That is, aluminum (4) reacts with aqueous solution (2), deprives oxygen or hydroxyl group from aqueous solution (2) to become aluminum compound fine particles (5) containing aluminum oxide or aluminum hydroxide, and surplus hydrogen is It becomes hydrogen gas (6), becomes bubbles, floats on the water surface, and accumulates on the water surface in the sealed container (1).
Thus, a pipe (7) having one opening (7a) is installed above the water surface of the sealed container (1), and the opening (7b) at the other end of the pipe (7) is connected to the closed container (1). If arranged outside, the generated hydrogen gas can be taken out.
The sealed container (8) is a simple filter for removing the impurities in the gas by pouring the gas ejected from the opening (7b) through the water (10). The hydrogen gas (6) taken out from the opening (9b) of the pipe (9) from the filter may be supplied directly to a hydrogen gas consumer such as a fuel cell or a hydrogen engine, or filled into a cylinder or the like. You may move to another.
The basic configuration and basic action of this method have been described above. However, continuous operation and automatic operation of the system are performed to realize more efficient and high-purity products such as hydrogen gas (6, 5). In order to do this, water and additives are replenished, the aqueous solution (2) and aluminum (4) are stirred to promote the reaction, the mixture of the aluminum compound fine particles (5) and the aqueous solution (2) is taken out and treated, catalyst (3) Replenishment and recovery, installation of impurity removal means, installation of other automatic control equipment, etc. are necessary. However, since these can all use existing technologies and means, description thereof is omitted here. .
In addition, the above reaction occurs without problems in an environment of normal temperature and pressure, but as a means for further increasing the reaction efficiency, an environment in which temperature, pressure and the like are appropriately adjusted may be created.

These are figures which showed the basic composition of this invention.

Explanation of symbols

1 and 8 are sealed containers 2 are acidic aqueous solutions 3 are catalysts 4 are aluminum materials 5 are aluminum compound fine particles 6 are hydrogen gas 7 and 9 are pipes 10 are water

Claims (3)

  In an environment where room temperature and normal pressure or temperature, pressure, etc. are appropriately adjusted, aluminum of any shape such as lump, plate, piece, powder, etc. is poured into water or brought into contact with water, and the action of promoting the reaction between aluminum and water The reaction of aluminum and water is promoted by adding an additive that acts to promote the reaction between the catalyst and aluminum and the catalyst, and hydrogen gas, and aluminum compounds including aluminum oxide and aluminum hydroxide are reacted throughout the reaction process. Hydrogen gas production method using aluminum and water as raw materials, characterized by producing fine particles.   2. The method for producing hydrogen gas using aluminum and water as raw materials according to claim 1, wherein the catalyst is mercury or an alternative that has the same reaction promoting action.   The said additive uses alternative products containing juice, such as a fruit containing citric acid or the citrus fruit which has the same oxide film dissolution effect | action similar to this, hydrochloric acid, a sulfuric acid, and another acidic agent, It is characterized by the above-mentioned. And 2. A hydrogen gas production method using aluminum and water as raw materials.

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