METHOD AND APPARATUS FOR BATCH PRODUCTION OF PULP INCLUDING IMPROVED ENERGY RECLAMATION

摘要

Cooked pulp at an elevated temperature and pressure is discharged from a batch digester into a first blow tank. The first blow tank is maintained at a substantially constant pressure which is less than the pressure in the digester and greater than atmospheric. Pressurized steam is released from the first blow tank into a dirty steam system as pulp is discharged into a second blow tank at a substantially constant rate. The pressure in the second blow tank is maintained at about atmospheric pressure.