MODELING OF KAPPA NUMBER IN DOWNFLOW LO-SOLIDS COOKING USING GUSTAFSON'S MODEL

摘要

Gustafson's kappa number model has been applied to the modeling of an industrial Downflow Lo-Solids cooking process. The model is originally published for softwood. In this study the model parameters have been optimized to be suitable in normal production and over grade transitions in both softwood and hardwood cooking. The real time kappa number profile of an impregnation vessel and digester has been calculated. The blow-line kappa number has been successfully predicted based on real time model and process measurements before cooking zone. The modeling results will be utilized in control purposes.