FGD Washdown Sumps

Flue Gas Desulfurization (FGD) systems scrub sulfur dioxide from exhaust gases in coal-fired plants. Washdown sumps collect slurry containing lime, gypsum, and residual solids from these systems. Efficient sump pumping is essential to maintain clean, safe, and compliant operations.

Challenges:
FGD slurries are chemically aggressive and highly abrasive, causing corrosion and erosion in conventional pump materials. pH fluctuations and dense solids often lead to clogging and seal damage. Downtime for cleaning or repair directly impacts environmental compliance and plant uptime.

Solution:
Hevvy/Toyo pumps designed for FGD service use corrosion- and abrasion-resistant alloys and elastomers. Their recessed impellers minimize contact with solids, and agitators keep materials in suspension for complete sump cleaning. The result is reliable, chemical-resistant performance that maintains sump integrity and minimizes manual intervention.