Hydrogen storage container hydrogen storage well inner wall hydrogen blocking process

Abstract

The invention provides a hydrogen storage container hydrogen storage well inner wall hydrogen blocking technology, and relates to the technical field of hydrogen storage container hydrogen storage wells. A hydrogen storage container hydrogen storage well inner wall hydrogen resistance technology comprises the following steps that firstly, oil removal treatment is conducted on a steel casing pipe, specifically, the steel casing pipe is placed in a constant temperature pool with a temperature control function, clear water is injected into the constant temperature pool, and oil removal powder is added; the steel casing required by the hydrogen storage well is subjected to deoiling treatment, activating treatment and nickel alloy plating treatment, so that the problem of hydrogen embrittlement of the material can be prevented, the designed strength requirement can be met, hydrogen embrittlement can be prevented, a reliable material is provided for the hydrogen storage well of a hydrogen storage container, and the service life of the hydrogen storage well is prolonged. In order to ensure that the hydrogen storage well is safer and more reliable in the application of the hydrogen refueling station, the amorphous nickel alloy is formed on the surface of the hydrogen-contacting material by adopting nickel alloy plating treatment on the steel casing pipe, so that the corrosion of atmosphere, alkali and some acids can be resisted, the hydrogen corrosion resistance of the steel casing pipe can be improved, and the hydrogen embrittlement resistance effect is achieved.

Description

technical field [0001] The invention relates to the technical field of hydrogen gas storage wells of hydrogen storage containers, in particular to a hydrogen resistance process for the inner walls of hydrogen gas storage wells of hydrogen storage containers. Background technique [0002] With the development of social economy and science and technology, the application fields of pressure vessels are constantly expanding. Underground gas storage wells are the product of the development of pressure vessels underground and the combination of pressure vessels, pressure pipelines and oil and gas wells. Vertical tubular pressure-bearing equipment stores high-pressure natural gas underground in the form of a wellbore. This method of storing high-pressure natural gas in a wellbore gas storage well has the characteristics of high safety, small footprint, and simple daily maintenance. However, the current underground gas storage well The device is only used to store natural gas, which...

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Problems solved by technology

[0002] With the development of social economy and science and technology, the application fields of pressure vessels are constantly expanding. Underground gas storage wells are the product of the development of pressure vessels underground and the combination of pressure vessels, pressure pipelines and oil and gas wells. Vertical tubular pressure-bearing equipment stores high-pressure natural gas underground in the form of a wellbore. This method of storing high-pressure natural gas in a wellbore gas storage well has the characteristics of high safety, small footprint, and simple daily maintenance. However, the current underground gas storage well The device is only used to store natural gas, which limits the wide application of underground gas storage wells

[0003] Hydrogen has a small molecular structure and is prone to hydrogen embrittlement to carbon steel and alloy steel materials. The inner wall of hydrogen gas storage wells is eroded by hydrogen, resulting in material degradation and strength reduction, which leads to cracking or delayed brittle failure. The damage of steel is mainly because hydrogen penetrates into the metal and recombines inside the metal, forming white spots or combining carbon to produce CH4, material deterioration, resulting in stress concentration, exceeding the strength limit of steel, and forming small cracks inside the steel. High-nickel-based materials and amorphous nickel-plated alloys can resist hydrogen embrittlement very well, while pure high-nickel-based materials usually have low tensile strength, which cannot meet the design requirements

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