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2022年01月26日 星期三
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Wood Chip APMP System
  • Thisis an achievement of National Sci-tech Support Plan under Ministry of Scienceand Technology during “the 11th Five-year Plan”. It is especiallysuitable for poplar, Eucalyptus and other fast growing woods, to produce highbrightness APMP. The system consists of washingand cleaning of wood chips, chemical pre-treatment, high-consistency refining,heat recovery, chemical preparation, screening andcleaning, 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 refinepulp, or thefirst-stagepressure refiner plus further low-consistency double disc refiner, in order toreduce energy consumption.

    3. After the first-stage refining, the pulp enters high-consistencyreaction tower directly, where the pulp is bleached to required whitenesslevel. Further bleaching is unnecessary.

    4. Heatrecovery system and waste liquid recovery ensure full utilization of thermalenergy and reduce environmental pollution.

    5. Theproduction adopts DCS control system with easy and convenient operation;production interlock protection is strict and reliable.

    Wood Chip APMP System Flowchart