熱帯広葉樹のスーパーバッチ蒸解

抄録

Recent developments in kraft batch cooking have resulted in new generations of highly energy efficient displacement batch processes. Further studies have shown that the full-displacement batch concept gives the best results in terms of cooking uniformity and pulp quality. The SuperBatch^TM process combines these advantages with optimized cooking chemistry enabling revolutionary low kappa numbers with sustained pulp quality. So far eight SuperBatch^TM system have been sold of which half are in operation with excellent results with softwood and hardwood species. The present paper summarizes and discusses the results from tropical hardwood species, four Eucalyptus and one Acacia, obtained by a new SuperBatch pilot plant. It is shown that high quality hardwood pulps can be produced over a wide range of kappa numbers from 10 to conventional levels with excellent bleachability.