Acid and alkali storage tanks
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I would like to ask the experts: what materials are generally used for storage tanks for acids and bases? Are the storage tanks for strong acids and strong bases different from those for weak acids and weak bases?
Iron is generally used. . Inner lining anti-corrosion layer. PP plastic is also fine.
For concentrated sulfuric acid, carbon steel is used; for dilute sulfuric acid, PP, fiberglass, etc. are used. For both concentrated and dilute hydrochloric acid, PP and fiberglass are used. For liquid caustic, carbon steel lined with rubber can be used for concentrated versions, while PP is used for dilute versions
For safety reasons, it is best to line the storage tank with corrosion-resistant tiles when storing concentrated sulfuric acid
Agree with what was said on the 3rd floor; to add, carbon steel can be used for both strong bases and weak bases.
Sulfuric acid and liquid caustic usually require carbon steel, while nitric acid demands stainless steel, based on experience
Consult the \"Corrosion Data Manual\" as a guide for selecting materials suitable for various corrosive environments
45% caustic soda with a temperature of less than 40 degrees Celsius can be stored in carbon steel tanks
The storage tanks in our sulfuric acid plant are basically made of carbon steel; otherwise, it would be difficult to ensure the strength of tanks weighing nearly 10,000 tons when using materials such as PP or fiberglass.
PVC plastics with a purity of 75% or less, PP pipes, fiberglass, etc., can be used for a long time; those with a purity of over 97% cannot be used as they will carbonize rapidly. Carbon steel should be used for concentrated sulfuric acid； Carbon steel is prohibited for use when the concentration is below 60%; it can be used temporarily at concentrations between 60% and 75%. For concentrations above 75%, PVC plastic, PP pipes, etc., should be used on a temporary basis, while carbon steel and cast iron containers can be used for long-term storage, provided that the containers are properly sealed. Both concentrated and dilute hydrochloric acid use PP and fiberglass reinforced plastic ； For concentrated alkalis, rubber-lined carbon steel can be used, while for dilute alkalis, PP is used.
PVC plastics with a purity of 75% or less, PP pipes, fiberglass, etc., can be used for a long time; those with a purity of over 97% cannot be used as they will carbonize rapidly. Carbon steel should be used for concentrated sulfuric acid； Carbon steel is prohibited for use when the concentration is below 60%; it can be used temporarily at concentrations between 60% and 75%. For concentrations above 75%, PVC plastic, PP pipes, etc., should be used on a temporary basis, while carbon steel and cast iron containers can be used for long-term storage, provided that the containers are properly sealed. Both concentrated and dilute hydrochloric acid use PP and fiberglass reinforced plastic ； For concentrated alkalis, rubber-lined carbon steel can be used, while for dilute alkalis, PP is used.
Alkalis can be handled with carbon steel; dilute acids can be dealt with using plastics such as PP and PVC, fiberglass, or steel-lined rubber. For concentrated sulfuric acid, carbon steel can be used, while for concentrated nitric acid, aluminum can be employed; for concentrated hydrochloric acid, plastics or fiberglass, or steel-lined rubber can be used.
It seems that for concentrated sulfuric acid, carbon steel cannot be used when the concentration is below 84. Bases can be used. Concentrated nitric acid requires storage tanks made of pure aluminum.
My factory uses carbon steel, and now it’s leaking strong alkali