Dew-Point Corrosion in Stacks, Ducts and FGD Equipment

Technical Articles

Dew-Point Corrosion in Stacks, Ducts and FGD Equipment

When local surfaces fall below the acid dew point, moisture and corrosive gas components form an aggressive condensate.

Overview

Dew-Point Corrosion in Stacks, Ducts and FGD Equipment

When local surfaces fall below the acid dew point, moisture and corrosive gas components form an aggressive condensate.

Technical review

Practical guidance

Cold spots, liquid traps, bends, transitions and shutdown periods require special attention. Selection must consider chemistry, temperature, particle erosion, expansion, ventilation and continuity at welds.

Project takeaway

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