WastewaterTreatment
ExhaustGasScrubbing
Desulfurization
CorrosionResistantAlloys
ContinuousDuty
Wastewater-&-Exhaust-Gas-Treatment
Wastewater-&-Exhaust-Gas-Treatment
Wet FGD slurry with 60,000–80,000 ppm Cl⁻ at 50°C–65°C causes severe pitting and crevice corrosion, with 316L failing within 48 hoursHigh-solids gypsum slurry (3.5%–5.0%) and cavitation at off-design operation cause impeller mass loss up to 2.5 g/100 hour
Key Challenges
Wet FGD slurry with 60,000–80,000 ppm Cl⁻ at 50°C–65°C causes severe pitting and crevice corrosion, with 316L failing within 48 hours
High-solids gypsum slurry (3.5%–5.0%) and cavitation at off-design operation cause impeller mass loss up to 2.5 g/100 hours
Mechanical seal leakage releases H₂S, NH₃, and VOCs (0.5–2.0 L/day per pump), exposing plants to fines of USD 70,000–280,000 per incident
Trace particulates and abrasive media destroy bearings and seals, requiring zero-leakage magnetic drive or wear-resistant wetted parts
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