Problem 5.7: A boilers feedwater Malkalinity is 15 ppm as
From Chapter 5 Problem Set. Level 2: Applied Thinking.
Question
A boiler’s feedwater M-alkalinity is 15 ppm as CaCO₃. Estimate the CO₂ concentration in the steam/condensate and the neutralizing amine demand at 2.5 ppm amine (active) per 1 ppm CO₂.
Answer
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CO₂ ≈ 15 × 0.79 = 11.85 ppm. Amine demand ≈ 2.5 × 11.85 = 29.6 ppm active amine.