Exotic alloy heat exchangers for chemical service: Hastelloy, Inconel, titanium, and zirconium
A tube bundle fails in eighteen months, and the metallurgical report says the alloy was never wrong on paper. Type 316L was rated for the acid, temperature sat inside the published range, and the corrosion allowance was generous. What the specification missed was a trace of ferric ion carried over from an upstream oxidation step,
CategoriesHeat Exchangers, Materials & Metallurgy