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Posted by Vern on July 11, 2002 at 08:01:15:
In Reply to: return line chem treatment posted by mike on July 10, 2002 at 18:22:46:
: on a low pressure boiler @10# pressure feeding steam to 3 buildings is return line treatment a good idea and what kind of chem to use
In my opinion yes, if you want to protect your return line from corrosion. Some things need to be considered though. Make certain no steam
is released where humans can breathe it, as some evidence indicates breathing condensate corrosion inhibitors can possibly cause cancer.
Is it economically feasible for your situation? These corrosion inhibitors can be expensive. As for types of chem to use, probably a blend of DEAE and cyclohexylamine would work for you,
morpholine is out it requires about 75 psi to heat it up enough to go out with the steam. Contact a reliable water treatment vendor in your area
and he can work out the details. If you don't know one go to www.awt.org. That website should be able to help you find one in your area.