MODIFIED KRAFT PULPING OF BIRCH

摘要

The influence of different black liquor pretreatment conditions on the birch kraft pulping was studied in this paper. The results indicate that using the rational technology and conditions of black liquor pretreatment, the modified pulping has higher pulping selectivity than conventional kraft pulping. It can improve the delignification selectivity of pulping and obtain pulp with lower Kappa number but less viscosity loss.