Test device for hydrogen sulfide corrosion of metal

Abstract

The invention relates to a test device for hydrogen sulfide corrosion of metal, belonging to the technical field of test equipment. The test device for hydrogen sulfide corrosion of metal comprises areaction kettle, a hydrogen sulfide gas supply assembly, a hydrogen sulfide gas tail gas absorption assembly and a temperature control assembly, wherein a test solution is contained in the reaction kettle, a kettle cover is arranged on an upper cover of the reaction kettle, the reaction kettle is respectively connected with the hydrogen sulfide gas supply assembly and the hydrogen sulfide gas tailgas absorption assembly through pipelines, and the temperature of the reaction kettle is kept constant through the temperature control assembly. According to the invention, the hydrogen sulfide gas is introduced into the reaction kettle filled with the test solution until a hydrogen sulfide saturated solution is formed in the reaction kettle; a wet hydrogen sulfide environment is simulated, so atest result is close to the actual operation environment of a metal material; by changing the test solution in the reaction kettle and the concentration of the introduced hydrogen sulfide gas and controlling the inner temperature of the reaction kettle, the condition of metal corrosion under different external environment conditions is simulated, and the accuracy and effectiveness of test resultsare ensured.

Description

technical field [0001] The invention belongs to the technical field of test equipment, and in particular relates to a metal hydrogen sulfide corrosion test device. Background technique [0002] Hydrogen sulfide is a strong neurotoxin and has a strong stimulating effect on mucous membranes. It not only easily threatens human life, but also causes great damage to drilling equipment and tools, including various coffins. Under normal temperature and pressure, dry hydrogen sulfide has no corrosion damage to metal materials, but hydrogen sulfide dissolves in water to form a wet hydrogen sulfide environment, and steel is prone to corrosion damage in a wet hydrogen sulfide environment, affecting the normal operation of equipment And, even catastrophic accidents should occur, causing heavy casualties and property losses. Therefore, it is very necessary to master the corrosion characteristics and influencing factors of hydrogen sulfide. [0003] The influencing factors of hydrogen su...

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Problems solved by technology

[0002] Hydrogen sulfide is a strong neurotoxin and has a strong stimulating effect on mucous membranes. It not only threatens human life, but also causes great damage to drilling equipment and tools, including various coffins.

Under normal temperature and pressure, dry hydrogen sulfide has no corrosion damage to metal materials, but hydrogen sulfide dissolves in water to form a wet hydrogen sulfide environment, and steel is prone to corrosion damage in a wet hydrogen sulfide environment, affecting the normal operation of equipment And, even catastrophic accidents should occur, causing heavy casualties and property losses. Therefore, it is very necessary to master the corrosion characteristics and influencing factors of hydrogen sulfide

[0003] The influencing factors of hydrogen sulfide on metal damage include the concentration of hydrogen sulfide, temperature, and the time of contact with hydrogen sulfide. During the test, by constantly changing the influencing factors, the metal corrosion situation under different external conditions is simulated. The existing corrosion test equipment is relatively Simple, can not guarantee the constant temperature during the test, and hydrogen sulfide gas leakage is very easy to occur, endangering the personal safety of the tester

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