What material is used for hot water desalination tanks?
Thread Content
Dear seniors: I have desalinated water at a temperature of around 60–70 degrees, and I would like to store it in a 100-ton tank for use in medium-pressure boilers. What material would be suitable for this tank? Or, if a regular carbon steel tank is used, how should it be treated so as not to affect the quality of the water?
Ordinary carbon steel will do, such as Q235B and Q245R
Will a regular carbon steel tank filled with once-treated demineralized water and hot water rust, thereby affecting water quality?
I’m not sure after placing it just once, but carbon steel will definitely affect water quality. If it is necessary to ensure the purity of the medium, stainless steel materials should be used, such as the commonly used S30408.
At this temperature, for boiler water, carbon steel is sufficient.
Ordinary carbon steel will do, such as Q235B
Listen to me: fiberglass or stainless steel.
Fiberglass will do. It’s best to design it so that the desalinated water can be reused, thereby avoiding energy waste due to temperature drops
The pH is around 6.2, which is low; it is recommended to use anti-corrosion measures or stainless steel pipes
Plastic containers made by PE rotomolding are suitable for pure water, with metal reinforcement strips added to the outside of the rotomolded tanks. Use two 50-ton water tanks separately; a 100-ton tank cannot be made at the moment. That’s how we use it in our factory – it’s very cost-effective, and the water isn’t polluted. As for whether PE can withstand a water temperature of 60-70 degrees, we use water at that temperature, and there’s no problem. Of course, fiberglass is also fine.