Wood Chip APMP System
This is an achievement of National Sci-tech Support Plan under Ministry of Science and Technology during “the 11th Five-year Plan”. It is especially suitable for poplar, Eucalyptus and other fast growing woods, to produce high brightness APMP. The system consists of washing and cleaning of wood chips, chemical pre-treatment, high-consistency refining,heat recovery, chemical preparation, screening and cleaning, reject refining and so on.
Features:
1.Chemical pre-treatment adopts two-stage squeezing and two-stage pre-impregnation,so wood chips are fully softened.
2.Regarding mechanical treatment, two-stage pressure refiner is used to refine pulp, or the first-stage pressure refiner plus further low-consistency double disc refiner, in order toreduce energy consumption.
3. After the first-stage refining, the pulp enters high-consistency reaction tower directly, where the pulp is bleached to required whiteness level. Further bleaching is unnecessary.
4. Heat recovery system and waste liquid recovery ensure full utilization of thermal energy and reduce environmental pollution.
5. The production adopts DCS control system with easy and convenient operation;production interlock protection is strict and reliable.
Wood Chip APMP System Flowchart