What material is suitable for heat exchangers used in the alkaline washing of exhaust gases containing HCl and trace amounts of chlorine?
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What material is suitable for heat exchangers used in the alkaline treatment of exhaust gases containing HCl and trace amounts of chlorine?
PP is the best; there may be relatively few manufacturers； I’ve seen owners request carbon steel; it probably won’t be used for very long, but it’s cheap, relatively easy to manufacture, and convenient
The pipe fittings and inlet/outlet ports made of graphite-modified polypropylene currently in use often crack, leading to leaks
We used carbon steel and applied anti-corrosion treatment; it’s been three years with no problems
A graphite condenser will do; one that is not impregnated with phenolic resin