Wipro Water’s vast experience in designing robust boiler feed water generation systems helps power plants in the reduction of silica scale in the turbine. Increased availability improves reliability and reduces operation expenditure.
Most water contains silica in its soluble or suspended form. Although coagulation and filtration (physico-chemical pre-treatment) can remove the suspended matter from water, these processes have little effect in reducing the content of soluble silica. At pressures as low as 400 pounds per square in gauge (psig), silica vaporizes. This causes scaling in turbines that is extremely difficult to remove. The thermal conductivity of silica is poor, and failures in the turbine may occur even with at very thin silica scale. Removal of silica plays an important role in boiler feed applications.
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