What Is a Sulfuric Acid Tank?

Sulfuric acid tanks are tanks that store sulfuric acid in the chemical and other industries. At present, sulfuric acid tanks that store sulfuric acid (more than 90%) in the domestic market or enterprises are made of carbon steel.

Sulfuric acid tank

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Sulfuric acid tanks are tanks that store sulfuric acid in the chemical industry and other industries. At present, sulfuric acid tanks that store sulfuric acid (more than 90%) in the domestic market or enterprises use

Concentrated sulfuric acid has strong oxidizing properties, and will passivate with metals such as aluminum and iron. It will form a dense passivation film (metal oxide film) on the metal surface, which will isolate the reactants and protect the pure metal element in the film. It no longer reacts with the strong oxidizing acid outside the membrane, so where the iron cans storing concentrated sulfuric acid come into contact with concentrated sulfuric acid, a dense oxide film will be formed and will not be corroded. ^[1]

Carbon steel sulphuric acid tanks have strict requirements on the welding process. If trachoma occurs in the welding part, it will cause serious corrosion problems. Once leak repair welding is difficult to effectively solve. Concentrated sulfuric acid has water absorption, and the moisture in the air will also become thinner, which will increase the corrosivity of carbon steel, which will seriously affect the normal use and service life of the equipment.

Traditional methods such as repair welding have major drawbacks. The high temperature and heat generated by repair welding can lead to dangerous accidents of sulfuric acid gas explosion. At the same time, due to the thermal stress and local metal changes in repair welding, the corrosion phenomenon will be exacerbated. However, the use of replacement media for re-bonding welding has a long construction period and high labor intensity, which will also cause a huge loss of shutdown and production. At present, for the leakage of sulfuric acid tanks, polymer composite materials are often used for rapid on-site treatment, among which the more mature ones are the Fu Shilan series. Polymer composites have chemical resistance, bonding properties, and versatility, which can avoid the effects of traditional repair welding. At the same time, they have properties that traditional corrosion-resistant materials do not have, which fully meet the needs of various environments. Compared with the traditional method, its advantages are that it can enable the company to quickly and effectively conduct on-site governance, effectively avoid the loss of benefits caused by long-term equipment shutdown and production shutdown; effectively avoid transportation costs, hoisting costs, and construction safety. The comprehensive factors ensure personal safety and corporate losses, saving valuable production time for the enterprise.