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Posted by Daniel Hernandez on July 04, 2002 at 09:30:51:
In Reply to: Re: chloride levels posted by P.Kastel on March 19, 2001 at 23:38:32:
: : Could someone provide me with the chemistry behind the relationship between the chloride level in my boiler water and blowdown amounts? Does attempting to regulate ph of condensate affect chloride levels? Thanks
: : Bill and Vern have pretty much summed this all up, but I would like to add that boilers at different operating pressures have different recommended limits for hardness, pH, TDS, silica etc... For example a low pressure boiler at 15 psi is going to have different limits that say a 900psi utility boiler suppling a steam turbine.
: Basically once you establish your upper range limits, you test your water chemistry and blowdown only when necessary. The main goal is to have non-corrosive and non-scale forming water in the boiler at a reasonable cost and minimized blowdown so as not to waste expensive treatment chemicals. If you can get your hands on one BETZ has a book titled, Betz Handbook of Industrial Water Conditioning. It goes into detail with these issues and isn't to hard of a read for the layman.
: Please feel free to E-Mail me if you wish.