BOILER DRUM CBD pH PROBLEM
BOILER DRUM CBD pH PROBLEM
(OP)
We have two HRSGs of 80 TPH @ 105 Kg/cm2 & 500 Deg.C, running at 75 TPH. We are facing some problem regarding maintaining of Steam drum pH, Although BFW pH is >8.8 by adding Morpholine. Steam drum pH is not increasing beyond 8.8 ( some times come downs to 8.6) even after dosing TSP in steam drum, and our lab analysis is giving Phosphate > 10 ppm. Also IBD are given frequently and CBD has also increased to maintain Phosphate and conductivity.
But months back in same condition pH were nearly 9.0.
Can anyone suggest for remedy, Please as chemical consumption and heat loss ( through CBD & IBD) has increased?
But months back in same condition pH were nearly 9.0.
Can anyone suggest for remedy, Please as chemical consumption and heat loss ( through CBD & IBD) has increased?





RE: BOILER DRUM CBD pH PROBLEM
RE: BOILER DRUM CBD pH PROBLEM
But we don't have Glycol system. Also we had CPU (condensate polishing unit) as well as DM plant. Also any contamination is not seems to be there as conductivity is normal.