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Chelate boiler water treatmen
QUESTION:One of the latest ideas for boilerwater treatment for steam boilers
is a chelate process, which "dissolves" scale by attracting the
calcium and magnesium ions. Does anyone have any experience with these
treatments: are they effective, what chemicals should be used and in
what concentration, and are there any problems to watch for?
ANSWER: Actually scale protects the boiler. The problem with scale is when you
get too much of it. I've a strong feeling that the recent problems with
boilers is caused more than anything else by fancy water treatments
applied by people too lazy to carry out regular washouts. Treating
boiler water is an exact science and has to be applied precisely
according to the water used. Too much alkali causes cracking in the
steel, and acidic water causes etch pits.
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