All-Polymer Dispersants Control Deposits in Boilers
Solus AP products are based on GE’s boiler terpolymer (BTP) chemistry and have been designed for use in boilers operating at pressures up to 900 psig. Given the widespread and growing use of membrane-based reverse osmosis water pre-treatment systems, iron corrosion products are quickly becoming the dominant contaminant entering boilers.
Until recently, water hardness resulting from sodium zeolite-softened make-up water was the major issue. Solus AP technology provides control of iron and hardness-based deposits and transport of troublesome iron, magnesium and silica contaminants through the boiler.
The technology helps maintain cleaner, scale-free heat transfer surfaces within boilers, especially under stressed conditions, which can result in high-contaminant loads from feedwater, such as upsets. The BTP polymer helps maintain optimum levels of heat transfer and fuel-to-steam efficiency by preventing the formation of insulating deposits on boiler heat-transfer and steam-generating surfaces.
The technology helps prevent boiler tube failures by reducing potential for overheating, under-deposit corrosion and flow restrictions. In addition, with older precipitating and polymer treatment technology, iron and hardness deposits can accumulate in the lower circuits of the boiler. Solus AP technology effectively transports both of these contaminants through the boiler, rejecting them to the blowdown, which reduces the potential for flow circuit restriction.