TAPPI TIP 0416-15 (2015) provides practical technical guidance for controlling chloride and potassium in kraft pulp mill pulping and chemical recovery cycles. The document explains how these non-process elements affect recovery boiler availability, ash deposits, sticky temperature ranges, heat-transfer surfaces, and superheater corrosion.
It covers chloride and potassium sources, sampling procedures, liquor and precipitator ash measurements, enrichment factor calculations, ash composition analysis, mill mass-balance development, and criteria for evaluating removal and control processes. The guidance is intended to help pulp mill personnel establish operating limits, assess process alternatives, and support recovery boiler reliability and continuous operation.
Application Scope: For kraft pulp mills, recovery boiler operators, process engineers, chemical recovery specialists, and technical professionals evaluating chloride and potassium control, ash treatment, and boiler availability.
