New Test Method for Scale Removal and Development of Digester Scale Inhibitors, 2013 PEERS Conference
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Scale formation in digesters and on pulp bleaching equipment brings inefficiencies to the pulping process because of energy and downtime losses, higher utility costs, and corrosion. Continuous development of deposit management technology is based on a synergistic approach combining deposit monitoring, scale inhibitor application and operational best practices. It is now understood that the best performing deposit inhibitors for digesters combine scale control and removal properties. The test method utilized is based on microbalance technology for express laboratory assessment of scale removal properties of potential inhibitors. This is a complementary technique to the scale inhibition evaluation method based on the same principle. A product for digester scale control that combines calcium carbonate scale inhibiting and removal properties is presented.