Inhibiting Fouling Tendency in High Coal Ash-Containing Water Systems

摘要

Dispersions of coal ash in water can be inhibited or prevented from scaling and simultaneously be inhibited or prevented from fouling by introducing thereto an additive blend that includes an anionic water-soluble polymer and a second polymer different from the anionic water-soluble polymer, where the second polymer is selected from the group consisting of copolymers and terpolymers having a plurality of hydrophobic groups.

主权项

1. A method of simultaneously inhibiting or preventing calcium carbonate scale deposition and inhibiting or preventing fouling by a dispersion of coal ash in water, the method comprising adding to the coal ash dispersion an amount of an additive blend effective to simultaneously inhibit scale deposition and prevent fouling, where the additive blend comprises:
an anionic water-soluble polymer; and a second polymer different from the anionic water-soluble polymer, where the second polymer is selected from the group consisting of copolymers and terpolymers having a plurality of hydrophobic groups.