Thread Content
Nitrogen blanketing of storage tanks is a protection technique that maintains a specific pressure by filling the tank with nitrogen, and it is widely used in industries such as chemicals, petroleum, and pharmaceuticals. Its main functions are as follows: 1. Preventing material oxidation or deterioration – Inert protection: Nitrogen is an inert gas that can displace oxygen (O₂) within storage tanks, preventing the stored materials (such as chemicals, oils, food ingredients, etc.) from coming into contact with oxygen and thus avoiding quality degradation or decomposition caused by oxidation reactions. Inhibiting microbial growth: An anaerobic environment can prevent the proliferation of aerobic bacteria and molds, thereby extending the storage period of perishable materials such as edible oils and biological products. 2. Reduce volatilization and evaporation losses: Suppress steam emission by covering the liquid surface with nitrogen, thereby reducing the evaporation rate of volatile substances such as solvents and light oils, and minimizing material loss and environmental pollution. Controling pressure balance: When the volume of the material in the tank expands or contracts due to temperature changes, the nitrogen layer automatically adds or removes nitrogen through pressure control valves, thereby maintaining a slight positive pressure inside the tank (usually 0.2~1.5 kPa), preventing air from entering or the material’s vapor from escaping. 3. Improve safety: Eliminate explosion risks: For flammable and explosive materials (such as benzene, **, liquefied gas), nitrogen blanketing can reduce the oxygen concentration inside the tank below the combustion limit (usually