KINETIC-MODEL FOR KRAFT PULPING OF HARDWOOD

A comprehensive model for the kraft pulping kinetics of Eucalyptus sal igna hardwood is presented. Kinetic parameters were estimated by fitti ng the model to available experimental data taken from the literature over a range of process variables. The model takes into account the ef fect of hydroxide and sulfide concentration in the liquor as well as t he temperature-time history of the cooking. Model predictions were suc cessfully compared with an independent set of bench-scale plant data f or lignin and carbohydrate dissolution. The model is able to predict q uite well the trends of the process variables.