Method for preparing hydrogen in process of producing manganous-manganic oxide through electrolytic manganese metal

A technology for electrolysis of manganese metal and manganese tetroxide, applied in the production of manganese oxide/hydroxide, hydrogen, etc., can solve the problems of direct hydrogen emission and high hydrogen concentration, and achieve energy saving, low economic cost and good economic benefits Effect

Inactive Publication Date: 2013-04-10
湖南特种金属材料有限责任公司宁乡分公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that hydrogen is directly discharged during the production of manganese tetraoxide by electrolysis of manganese, the purpose of the present invention is to find a method of directly hydrolyzing electrolytic manganese

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  • Method for preparing hydrogen in process of producing manganous-manganic oxide through electrolytic manganese metal

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] (1) Weigh 1000g of electrolytic metal manganese, crush it in a ball mill for 1 hour to produce electrolytic metal manganese powder 1, and use an analytical sieve to detect that its particle size is 100% less than 100μm;

[0020] (2) Add 3L of distilled water to electrolytic manganese metal powder 1 to prepare slurry 2, and put slurry 2 into the hydrogen generator;

[0021] (3) Weigh 10g of ammonium chloride, add it to slurry 2, control the system temperature at 65°C, stir the reaction for 1h, discharge the gas released by the reaction in the first 3 minutes, use a collection bag to collect the gas released by the subsequent reaction 3, Slurry 2 generates manganese hydroxide after hydrolysis;

[0022] (4) The manganese hydroxide is oxidized with compressed air at a temperature of 60°C. After a reaction time of 6 hours, trimanganese tetraoxide 4 is prepared;

[0023] (5) The trimanganese tetraoxide 4 is washed and dried to obtain trimanganese tetraoxide product ...

Example Embodiment

[0025] Example 2

[0026] (1) Weigh 2000g of electrolytic metal manganese, crush it in a ball mill for 1.5 hours to produce electrolytic metal manganese powder 1, and use an analytical sieve to detect that its particle size is 100% less than 75μm;

[0027] (2) Add 5L of distilled water to the electrolytic manganese metal powder 1 to prepare slurry 2 and put the slurry 2 into the hydrogen generator;

[0028] (3) Weigh 25g of ammonium sulfate, add it to slurry 2, control the system temperature at 80℃, stir the reaction for 1 hour, discharge the gas released by the reaction in the first 3 minutes, use a collection bag to collect the gas released by the subsequent reaction 3, slurry Material 2 generates manganese hydroxide after hydrolysis;

[0029] (4) The manganese hydroxide is oxidized with compressed air at a temperature of 60°C. After a reaction time of 6 hours, trimanganese tetraoxide 4 is prepared;

[0030] (5) The trimanganese tetraoxide 4 is washed and dried to obtain trimanganese...

Example Embodiment

[0032] Example 3

[0033] (1) Weigh 1500g of electrolytic metal manganese, add 4L of distilled water to make slurry 1;

[0034] (2) Put slurry 1 in a ball mill for 1 hour to make slurry 2, and put slurry 2 in a hydrogen generator;

[0035] (3) Weigh 20g of manganese chloride, add slurry 2, control the system temperature at 85°C, stir for 1 hour, and discharge the gas released during the first 3 minutes of reaction. Use a collecting bag to collect the gas released by the subsequent reaction. Material 2 generates manganese hydroxide after hydrolysis;

[0036] (4) The manganese hydroxide is oxidized with compressed air at a temperature of 60°C. After a reaction time of 6 hours, trimanganese tetraoxide 4 is prepared;

[0037] (5) The trimanganese tetraoxide 4 is washed and dried to obtain trimanganese tetraoxide product 5.

[0038] Finally, the gas 3 is monitored with a portable hydrogen purity analyzer HCKDGPH2-M, where the hydrogen content is 81%. The manganese tetroxide product 5 can be...

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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 using electrolytic manganese as a raw material to produce trimanganese tetroxide. 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 manganese tetraoxide by electrolytic metal manganese is the main production method of manganese tetroxide industry in my country. During the production process, the reaction of manganese and water can release hydrogen gas, but because the hydrolysis reaction and oxidation reaction of electrolytic metal manganese in the current tr...

Claims

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Application Information

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IPC IPC(8): C01B3/08C01G45/02
CPCY02E60/36
Inventor 赵凯陈飞宇银瑰
Owner 湖南特种金属材料有限责任公司宁乡分公司
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