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Method for preparing hydrogen from iron scraps and waste sulfuric acid by anaerobic corrosion reaction

A technology of anaerobic corrosion and waste sulfuric acid, which is applied in the production of hydrogen, can solve social and environmental hazards and other problems, and achieve the effects of large hydrogen production, low energy consumption, good economic benefits and environmental benefits

Inactive Publication Date: 2018-12-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If not handled properly, it will cause great harm to society and the environment

Method used

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  • Method for preparing hydrogen from iron scraps and waste sulfuric acid by anaerobic corrosion reaction
  • Method for preparing hydrogen from iron scraps and waste sulfuric acid by anaerobic corrosion reaction

Examples

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Effect test

Embodiment 1

[0029] Prepare a spent sulfuric acid solution with a pH of 0 at room temperature, fill 250ml into a 300ml serum bottle, and fill with N 2 5 minutes to ensure the anaerobic environment in the bottle, then add 2.8g of scrap iron chips with a particle size of 2mm, seal it with a rubber stopper, and let it stand at room temperature. The hydrogen production was recorded every hour by the drainage gas collection method, and the hydrogen content was determined by gas chromatography.

Embodiment 2

[0031] Prepare waste sulfuric acid solution with a pH of 2 at room temperature, fill 250ml into a 300ml serum bottle, fill with N 2 5 minutes to ensure the anaerobic environment in the bottle, then add 2.8g of scrap iron chips with a particle size of 2mm, seal it with a rubber stopper, and let it stand at room temperature. The hydrogen production was recorded every hour by the drainage gas collection method, and the hydrogen content was determined by gas chromatography.

Embodiment 3

[0033] Prepare waste sulfuric acid solution with a pH of 4 at room temperature, fill 250ml into a 300ml serum bottle, fill with N 2 5 minutes to ensure the anaerobic environment in the bottle, then add 2.8g of scrap iron chips with a particle size of 2mm, seal it with a rubber stopper, and let it stand at room temperature. The hydrogen production was recorded every hour by the drainage gas collection method, and the hydrogen content was determined by gas chromatography.

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Abstract

The invention discloses a method for preparing hydrogen from iron scraps and waste sulfuric acid by anaerobic corrosion reaction, and belongs to the field of waste based hydrogen production. The method comprises the following steps: firstly, screening the iron scraps, selecting the iron scraps with particle size smaller than 3.0 mm, soaking the iron scraps in Na2CO3 at 80 DEG C for 10 min, then, soaking the iron scraps in 5% H2SO4 for 30 min to remove oxide on the surface, and cleaning and drying the iron scraps with distilled water for later use; adding a waste sulfuric acid solution to a sealed container, filling the container with N2 to remove air, then adding the treated iron scraps, sealing the container with a rubber stopper, leaving the mixed solution to stand at room temperature for culturing and hydrogen collecting, and finally collecting the hydrogen in a gas bag. The method has high hydrogen production rate, large hydrogen production amount and high hydrogen purity.

Description

technical field [0001] The invention relates to a method for producing hydrogen from waste, in particular to a method for producing hydrogen by anaerobic corrosion reaction of scrap iron scraps and waste sulfuric acid, and belongs to the field of waste hydrogen production. Background technique [0002] Hydrogen is not only a clean and efficient energy source, but also can be used as an important basic raw material in the petrochemical synthesis process and has a wide range of uses. The demand for hydrogen is huge. By 2020, the global demand for hydrogen will reach 324.8 billion cubic meters, an increase of nearly 23%. Among them, the Asia-Pacific region has become the largest hydrogen market in the world. With the gradual enhancement of people's awareness of the environment, the use of clean energy will be more and more supported by the government and welcomed by people. At present, the production of hydrogen mainly comes from traditional fossil energy. In the production ...

Claims

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Application Information

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IPC IPC(8): C01B3/08
CPCC01B3/08Y02E60/36
Inventor 李秀金李政伟袁海荣左晓宇
Owner BEIJING UNIV OF CHEM TECH
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