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WRK FGD Pump Conversion

WRK FGD Pump Conversion

The first FGD Pumps installed in the 1970’s and 1980’s experienced widespread rubber liner failure. Rubber has been a poor liner choice for contemporary FGD absorber pumps. While their newer designs have great out-put, but they have experienced several failures: Difficult to install and retain these large rubber shell liners One small tear can grow to liner failure and unacceptable leakage from shell Chunks of rubber will clog the downstream spray nozzles reducing absorber efficiency Cleaning nozzle is a major maintenance event For a time, bonded-in urethane liners replaced the rubber liners, but the industry discovered that alloy white iron impellers and pump casings are the best-suited materials for this application. Unfortunately over the past 10 years, the coal-fired power industry has been supplied a large number of rubber-lined absorber recycle pumps such as the Warman® GSL 600, 700, 800 & 1000. A high rate of premature impeller and suction liner wear as well as damage to volute liners is well documented. As a result, we have designed our WRK™ FGD Pump Conversion.

Our WRK™ FGD Pump Conversion Design Upgrades

Robust impeller and suction liner design to extend wear life Impeller and suction liner made of Townley alloy HC34, proven in absorber recycle pumps for more than 20 years Able to be relined, Bonded Towniprene® seal and suction cover inlet Adjustable suction liner eliminates the need to move impeller and risk damage to mechanical seal Direct bolt-up conversion requires no piping changes Peak pump efficiency maintained Unique serial number embossed on each casting for full traceability First installation of WRK™ 800 now in service 50 months as of June 2014, showing minimal signs of wear – O.E.M. lasted only 20 months before failure Extensive contact list of current satisfied users Easy installation and adjustment Solid bowl pump casings for 800 & 1000. First WRK™ 800 installed October 2013 All rubber wear parts eliminated, no chance of breakdown of rubber causing blockage of spray nozzles Short lead times, typically 8 weeks or less