Power Applications

Conveyor Drive and Transfer Points

 

In Power Stations, Goodwin pumps are used in areas of general clean‑up and solids removal. The use of these submersibles has enabled the Power Stations to generate electricity continuously, keeping down the solids that accumulate due to spillage at the conveyor transfer points and around the drive drums of those conveyors.

 

The efficient and prompt removal of these solids eliminates the chances of fire due to solids build‑up around the drive and tension drums.

 

Paddle Hopper Feeds and Stock Pile Drains

 

By using wash down hoses in the vicinity of the paddle hopper feeder and stock pile drains, all the -30mm coal spillage can be pumped to the surface where it can be handled by the coal plant mobile machinery.

 

There have been dramatic improvements in the working conditions for the plant operators and availability of conveyors since the submersibles have been installed. By providing a reliable pump, the plant will be kept clean with the minimum of effort. It is fact that one gets more work from manual labour  by asking them to "wash‑down" with a hose, than if they were given shovels and wheel barrows to remove spillage and debris.

 

 

Boiler and Ash Plants

 

On boiler plants Goodwin Submersibles have replaced vertical spindle pumps, high pressure water ejectors and pneumatic ejector systems in "Ash Crusher Sumps". Located at each end of the boilers. The Goodwin submersibles are installed by the side of the crushers where there is always ash and water from the quench circuit present. The agitator on the Goodwin submersible pump is very effective here to ensure that all solids are removed. This enables quick access to the ash crushers when maintenance is required. Previously, much production time was lost when the crushers blocked or failed when the sumps had to be dug out to remove ash residue before maintenance could be effected.

 

Precipitator Drains and Dust Sumps

 

The Goodwin pump is equally effective when handling very fine dusts, for example, in the precipitator drains tank. Very high concentrations of dust particles are discharged from the precipitators; up to 60% solids is not uncommon. Turbine hall drainage is also diverted to these tanks to help with dilution. The product in these tanks is pumped just a short distance to the main ash pits.

 

Light duty clean water submersible pumps in these tanks do not perform well. The complaint from the fuel and ash engineer was that when this product is de-watered it sets as hard as concrete. Pneumatic picks were used 2 or 3 times a year when the solids had to be removed. Typically, sumps where Goodwin Submersible Pumps have been installed over 4 years ago have never required any solids to be removed manually. The influence of the agitator ensures maximum solids removal.

 

Summary

 

With all of the applications that are described, the reason this is such a successful pump is because it will improve your plant running time, reducing your maintenance costs and making you more money.

 

This sites emergency ash lagoon was full. After 10 days pumping with two Goodwin 100 ANZE pumps the difference is clearly visible. The lagoon is now run and maintained at its original depth which it has never been at since the power station was commissioned.