Pulp digester for paper making

Apart from all these, the displacement digester cooking system includes four basic units, such as heat exchange, exhaust gas separation, cooking, black liquor filter.

The advantages which are offered by the displacement digester system are :

  • Washing function
  • High pulp quality
  • Reliable and stable system
  • High production efficiency
  • Less steam consumption
  • Flexible pulp processing
  • Less environmental pollution

D) CONTINUOUS TUBULAR DIGESTER

This is the main equipment of non-wood fiber pulp  making.

The paper pulp, can then be sent to washing bleaching system and applied to paper making processing. Check privacy policy here.

These raw materials react with a chemical liquid and get the paper pulp, which is mostly composed of cellulose. The most advanced batch-cooking technology -displacement cooking process is usually adopted, as it requires low cost and high-quality pulp is obtained.

Our super batch cooking technology can reduce to 0.6-0.8ton of steam consumption from 2-2.5ton for producing 1ton pulp.

  • Oxygen delignification. Low Kappa value. High strength paper.
  • Pulp produced by CNBM super batch cooking system has excellent bleaching properties because of the low Kappa value, high strength, oxygen delignification and other good production conditions.

    Low Kappa value. High strength paper.

    The goal of total fiber management is to also reduce the amount of time needed to cook the wood chips in the digester, as well as to lower the cooking temperature. At times, it can also be applied to the chemi thermo mechanical pulping and bio-mechanical pulp. First, the harvested trees are cut into logs.

    Generally, non-wood fiber, wood shaving and some materials with low density are suitable for wet-method material preparation.

    The advantages of using this continuous tubular digester are -

    • Stable electricity and steam consumption and no peak load
    • Even pulp quality and high coarse and stable pulp yield
    • Flexible liquid ratio adjustment, less pollution
    • High degree of automation, easy to adjust the process, high production efficiency, saves cost
    • Continuous production
    • Decrease the energy and chemical consumption, reduce cost of waste liquor recovery and pollution.

    Market Insights :

    As per a recently compiled report by Transparency Market Research (TMR), an average expansion has been projected over the forecast period, 2017 to 2026, for the global pulp market.

    This is accomplished by reducing the surface tension between the wood and the liquor, which helps the chips become more thoroughly wetted by the chemicals. Our pulp cooking digester can be used with GLV and other well-known chemical pulp production line equipment. As we all know, the raw materials of paper pulp like grasses, bamboo, wood and other sources are cooked in the digester.

    The sulphate process, also known as the Kraft process, uses an alkaline system instead. So, in general, many related chemical pulp machines, such as pulp digester, blow tank, disc filter, twin roll press, vacuum drum washer, and other pulp machines and related parts, are required for the whole set of chemical pulping production line.

    The vertical digester is used mostly for the super batch cooking.


    High quality papers can be produced with the chemical pulping method, as most of the lignin and hemicelluloses remained in the wood, are dissolved in the Kraft cooking. What's more, super batch cooking production line achieves zero emission waste water and reduces the emission of bleaching waste water.

    Super batch cooking production line we offer

    CNBM offers all the paper pulping equipment of the super batch cooking production line as well as the line itself.