Corrosion resistance of the plates in the plate heat exchanger
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Dear experts, we have two plate exchangers with a designed temperature of 170°C. The hot side uses low-pressure hot water, while the cold side uses circulating water with a chloride content of 350 ppm. What is the most suitable material for the plates? Please explain the reason or source, thank you
316l is the safest choice. The reason is experience
Find some companies that specialize in removable panel systems, obtain their brochures, and you’ll know which materials are commonly used. Or send them a quote request to have them design it for you, and then you’ll know the material.
304L: cheap and effective.
Based on a chloride content of 350 PPM at a temperature of 170 degrees, titanium materials are recommended for use
The poster could provide the actual operating temperature; the lower the temperature, the better the material’s resistance to chloride ion corrosion will be
If titanium material is required, please contact me on QQ at 949984070 to ask for the specific details; I will send you a copy of the corrosion manual.
I specialize in plate heat exchangers, so let me answer your question: when the chloride ions concentration in the medium exceeds 300 mg/L and the temperature is above 80°C, titanium material is required. When the chloride ion concentration in the medium exceeds 50 mg/L and the temperature is above 60°C, 316L material is required. My personal QQ is 1035366037; you can add me there for further details.