The client, a major Japanese chemicals company contracted Corrocoat Japan Ltd to refurbish a stainless steel water cooling pumpat oneof its manufacturing plants,which hadhad to be taken out of service due to inefficiency.
Carryingout thework inits ownworkshops, thepumpwas first flash grit blasted, then salt decontaminated before being grit blasted again, this time to standard Sa 2½. The internal surfaces, were coated with Corroglass 232 to produce a flat surface suitable for a further coatingofCorroglass200.Finally, acoat Of Fluiglide was applied. The pump was re-assembled and balance adjusted.
The combined use of Corroglass 200 and Fluiglide offers dual benefits.Thesystem not only reduces fuel consumption by achieving not able increases inoverall efficiency levels,but also provides an effective corrosion barrier,preventing earlyfall-offin performance due to nodular growth and corrosion.
resources by maximizing the performance of pumping systems used in the chemicals, marine, power generation, processing and water and waste industries. Corrocoat was a pioneer in the introduction of new technology in coating materials which have now been applied to thousands of pumps worldwide,achieving in every case significant improvements in efficiency
Results & Benefits
On a recent similar contract, a chemicals company requested a performance test on a pump that had been in continuous operationfor14years.Thisgraphshowstheresultsofthetest carriedout byCorrocoat Japan beforeand after applying a coating of Fluiglide using the thermodynamic method for pump testing compared to the pump manufacturer’s test.
The pump performance test before coating shows the
following results in comparison with the pump manufacturer’s test at design duty point (2100
m3 h): PumpHead: Deterioration 6.53%, PowerkW:
Increment 12.52%, Pump Efficiency: Decrease 17.03%
After applying Fluiglide, the pump performance test (green curves) at same duty point shows the following results: Pump head: Recovery 9.78%, Power kW: Reduced by 9.53%, pump efficiency: Improved by 21.79%
The total energy savings after one year showed a massive saving and a payback period of 16 months was achieved.
Left: The pump casing before blast cleaning