Method for preparing hydrogen in process of producing trimanganese tetroxide from electrolytic manganese metal

Abstract

The invention relates to a method for preparing hydrogen in process of producing manganous-manganic oxide through electrolytic manganese metal and belongs to the field of chemical metallurgy. The preparation method comprises the following steps: crushing the electrolytic manganese metal in the process of producing the manganous-manganic oxide by taking the electrolytic manganese metal as a raw material, reacting the electrolytic manganese metal with water to generate manganese hydroxide under specific conditions under the catalytic action of a catalyst, and releasing the hydrogen, wherein the specific reaction conditions in the process of preparing the hydrogen are that the crushing particle size of the electrolytic manganese metal is less than 150 microns, the addition amount of the catalyst is 5-15g of catalyst added into each 1000g of electrolytic manganese metal, the reaction temperature is controlled to be 40-90 DEG C, and the PH value of the reaction process is controlled to be 6-12. The manganese hydroxide generated through the reaction is prepared into a manganous-manganic oxide product through other oxidation processes, and the hydrogen concentration of the hydrogen released from the reaction can reach 80-90 percent, and the hydrogen becomes a final gas product. The added catalysts are ammonium chloride, ammonium sulfate, hydrochloric acid, manganese chloride and oxalic acid and also comprise two or more catalysts.

Description

technical field [0001] The invention relates to the field of metallurgical and chemical production, in particular to a method for preparing hydrogen by reacting manganese and water under specific conditions in the process of producing manganese tetraoxide by using electrolytic metal manganese as a raw material. Background technique [0002] Hydrogen is recognized as a clean energy source, and it is also an important raw material for the petrochemical industry, electronics industry, aerospace industry, and flotation glass industry. With the advent of the era of clean energy, the demand potential for hydrogen is undoubtedly huge. [0003] The production of trimanganese tetraoxide by electrolytic manganese metal is the main production method in the trimanganese tetraoxide industry in my country. During the production process, the reaction of manganese and water can release hydrogen. The hydrolysis reaction and the oxidation reaction are carried out simultaneously, resulting in ...

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Problems solved by technology

[0003] The production of trimanganese tetroxide by electrolytic manganese metal is the main production method in the trimanganese tetraoxide industry in my country. During the production process, the reaction of manganese and water can release hydrogen. The hydrolysis reaction and the oxidation reaction are carried out simultaneously, resulting in a low concentration of hydrogen gas, which has no recovery value

The hydrogen generated by the reaction may also cause safety accidents such as combustion and explosion in the production process of manganese tetraoxide. Therefore, hydrogen is often discharged as a harmful gas in the production process of manganese tetraoxide in my country.

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