image description image description image description

DualC™ Cooking for Paper Grade

The DUALC™ cooking process is based on a combination of advantages from SuperBatch® and RDH™ displacement cooking technologies.

The displacement batch cooking technique gives the best opportunities for optimal conditions and flexibility in cooking. In paper grades, 95-100% pulp strength delivery can be achieved. One key difference compared to other technologies is the two-stage black liquor pre-treatment before the cooking phase.

The cooking can be adapted to chip quality. No compromise needs to be made in chip preparation and the material flow can be more efficiently utilized for pulp production. Production increases can be achieved without compromise in pulp properties. Preventive maintenance can be performed without shutting down the entire cooking plant.

Displacement batch cooking plant comprises continuous operations as well. These include tank farm heat transfer processes, condensate and gas collection system and black liquor transfer to evaporation.

  • One key to success is the two-stage black liquor pre-treatment before the cooking phase
  • GL&V's DUALC™ cooking system can be equipped with an internal calcium deactivation of the liquor to evaporation, which prevents scaling occurring in many other cooking methods
    • Black liquor impregnation and hot liquor treatment
    • Correct alkali and temperature profiles controlled feed-forward
    • No mechanical treatment during cooking
    • Easy operation – simple unit operations
  • Can adapt to any raw material or chip quality
  • Stationary chip bed
  • Adjustable cooking chemistry
  • Preventive maintenance without shut-down
  • Design production range 300 – 3300 ADt/d
  • Efficient odor gas collection system
  • Production increase without compromise in pulp properties
  • Simultaneous production with different pulp grades, including paper grade and dissolving pulp production
  • Low consumption figures
  • Reduced investments
  • Less maintenance shut-downs
  • Fast start-up
  • Stronger pulp
  • Higher yield
  • Better uniformity compared to other cooking processes
  • Multiple species cooking
  • Tailor made pulp
general requests

DualC™ Cooking for Paper Grade

The DUALC™ cooking process is based on a combination of advantages from SuperBatch® and RDH™ displacement cooking technologies.

The displacement batch cooking technique gives the best opportunities for optimal conditions and flexibility in cooking. In paper grades, 95-100% pulp strength delivery can be achieved. One key difference compared to other technologies is the two-stage black liquor pre-treatment before the cooking phase.

  • Further Details

    The cooking can be adapted to chip quality. No compromise needs to be made in chip preparation and the material flow can be more efficiently utilized for pulp production. Production increases can be achieved without compromise in pulp properties. Preventive maintenance can be performed without shutting down the entire cooking plant.

    Displacement batch cooking plant comprises continuous operations as well. These include tank farm heat transfer processes, condensate and gas collection system and black liquor transfer to evaporation.

  • Technical Information

    • One key to success is the two-stage black liquor pre-treatment before the cooking phase
    • GL&V's DUALC™ cooking system can be equipped with an internal calcium deactivation of the liquor to evaporation, which prevents scaling occurring in many other cooking methods
      • Black liquor impregnation and hot liquor treatment
      • Correct alkali and temperature profiles controlled feed-forward
      • No mechanical treatment during cooking
      • Easy operation – simple unit operations
    • Can adapt to any raw material or chip quality
    • Stationary chip bed
    • Adjustable cooking chemistry
    • Preventive maintenance without shut-down
    • Design production range 300 – 3300 ADt/d
    • Efficient odor gas collection system

  • Benefits

    • Production increase without compromise in pulp properties
    • Simultaneous production with different pulp grades, including paper grade and dissolving pulp production
    • Low consumption figures
    • Reduced investments
    • Less maintenance shut-downs
    • Fast start-up
    • Stronger pulp
    • Higher yield
    • Better uniformity compared to other cooking processes
    • Multiple species cooking
    • Tailor made pulp

Feedback

Thank you, Your Comments / Suggestions submitted successfully.