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