Fujian Light Industry Machinery & Equipment Co., Ltd.
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  • Batch Displacement Cooking System (BDC)

Batch Displacement Cooking System (BDC)

Batch Displacement Cooking System (BDC)

Batch Displacement Cooking System (BDC)

Featuring energy-saving and emission reduction, BDC batch displacement cooking is an extended delignification process used in chemical pulp mills. A displacement cooking system can be equipped with 1-5 digesters, 2 pressure liquid recovery accumulators and several ordinary pressure tanks. In addition to the batch replacement operation, there are other continuous operations, such as: heat transfer within tank zone, fiber separation, condensate water treatment and gas collection. This cooking system is suitable for non-woody fibers including wood chips, bamboos, straws and others.

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How it works?
  • Chip filling: The chips are put into the digester, at the same time, the air is evacuated from digester.
  • Black liquor impregnation: fill the digester with black liquor from black liquor tank and add appropriate white liquor.
  • Hot black liquor replacement: fill the digester with hot black liquor and white liquor to replace warm black liquor in the digester.
  • Heating and cooking: steam heats digester to the maximum cooking temperature and keep the temperature.
  • Cold black liquor replacement: fill digester with cold black liquor to replace the hot black liquor, cooling the pulp.
  • Discharge: send cooling pulp to blow tank.
Features
  • Saves steam and reduces energy consumption (0.75 - 1.3 tons of steam / pulp)
  • Good pulp strength, improved yield
  • Reduces the consumption of bleaching chemicals and the pollution of waste water
  • Decreases the viscosity of black liquor, which is conducive to evaporation
  • The replacement of black liquor is equivalent to one-stage pulp washing.
  • The cooking time is shortened, greatly improving the cooking efficiency.
  • Eliminates cooking odor, and reduces wastewater discharge, providing outstanding environmental benefits.
  • Comes with automatic control of the whole production process, and stable system operation.
Related Products
  • Bleached Chemi-thermo Mechanical Pulp System (BCTMP)
  • Batch Displacement Cooking System (BDC)
  • Vertical Continuous Displacement Cooking System (VCDC)
  • Horizontal Tube Continuous Cooking System
  • Oxygen Delignification System
  • High-consistency Bleaching Tower
  • Pulping Agitator
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Waste Paper Pulp Production
    1. Pulper of Paper Making Machine
    2. Paper Pulping Machine (Hydrapulper D-Type)
    3. Drum Pulper
    4. M.C. Hydrapulper (with S-Type Rotor)
    5. H.C. Pulper
    6. Vertical Hydrapulper
    7. Broke Pulper
    8. Impurity Separator
    9. Drum Screen Machine
    10. Waste paper sorter, Bale Breaker
    11. Ragger
    12. Cutting Machine
    13. Grab Bucket
    14. Chain Conveyor
    15. Pulp Cleaner of Paper Making Machine
    16. High Consistency Cleaner
    17. Low Consistency Cleaner
    18. Centrifugal Cleaner
    19. Pulp Screen of Paper Making Machine
    20. Coarse Screen (Medium Consistency), ZSN Series
    21. Pressure Screen (Outflow Type), ZSR Series
    22. Drum Type Coarse Screen, ZSR Series
    23. Pressure Screen (Inflow Type), ZSL Series
    24. Fiber Separator, ZSF Series
    25. Low-Pulse Screen, ZSM Series
    26. Combisorter, ZSM Series
    27. Rejects Sorter, ZTS Series
    28. Light Impurity Separator, ZSQ Series
    29. Vibrating Screen, ZSK Series
    30. Upflow Pressure Screen
    31. Horizontal Pressure Screen
    32. Rejects Screen
    33. Fiber Separator, ZDF Series
    34. Pulp Thickener of Paper Making Machine
    35. Twin-Wire Press Washer
    36. Multi-Disc Filter
    37. Screw Pulp Press Washer
    38. Inclined Screw Thickener
    39. Disc Thickener
    40. Cylinder Wire Thickener, ZNW Series
    41. High Speed Washer / Thickener
    42. Drum Thickener
    43. Two Stage Pulp Washer
    44. Disc Thickener, ZNZ Series
    45. Twin Screw Press
    46. Inclined Screw Conveyor (Sedimator), ZTZ Series
    47. Belt Filter Press / Thickener (for Sludge Handling System)
    48. Deinking Machine of Paper Making Machine
    49. ECO Deinking Flotation Cell
    50. Convection Deinking Flotation Machine
    51. Diffusion Deinking Flotation Machine
    52. Five-Stage Deinking Flotation Cell (Complete Closed)
    53. Disperser System of Paper Making Machine
    54. Roll Type Disperser
    55. Disc Disperser (with Double Hydraulic Cylinder Drive)
    56. Disc Disperse System
    57. Disc Disperser (with Single Hydraulic Cylinder Drive)
    58. Refiner of Paper Making Machine
    59. Double Disc Refiner
    60. Paper Approach System
    61. Approach System of Paper Making Machine
    62. Pulp Deaerator
    63. Auxiliary Pulping Equipment
    64. Propeller Agitator
    65. Medium Consistency Mixer
    66. Centrifugal Vacuum Pump
    67. Rosin Saponifying Pot
    68. Pulp Bleaching Tower
Chemical Pulp Production
    1. Evaporation Equipment for Pulp and Paper Mills
    2. Tube Type Falling Film Evaporator (TFFE)
    3. Plate Type Falling Film Evaporator (PFFE)
    4. Horizontal Spray Film Evaporator (HSE)
    5. Forced Circulation Evaporator (FCE)
    6. Mechanical Vapor Recompression Evaporator (MVR)
    7. Deactivation System (DAS)
    8. Chloride and Potassium Removal System (CPR)
    9. Pulping Machines
    10. Bleached Chemi-thermo Mechanical Pulp System (BCTMP)
    11. Batch Displacement Cooking System (BDC)
    12. Vertical Continuous Displacement Cooking System (VCDC)
    13. Horizontal Tube Continuous Cooking System
    14. Oxygen Delignification System
    15. High-consistency Bleaching Tower
    16. Pulping Agitator
Other Products
    1. Impurity Separator
    2. Impurity Separator
    1. Pulp Bleaching Tower
    2. Pulp Bleaching Tower
    1. Rejects Sorter, ZTS Series
    1. Double Disc Refiner
    2. Double Disc Refiner
Waste Paper Pulp Production
  • Pulper of Paper Making Machine
  • Pulp Cleaner of Paper Making Machine
  • Pulp Screen of Paper Making Machine
  • Pulp Thickener of Paper Making Machine
  • Deinking Machine of Paper Making Machine
  • Disperser System of Paper Making Machine
  • Refiner of Paper Making Machine
  • Paper Approach System
  • Auxiliary Pulping Equipment
  • Pulp Bleaching Tower
Chemical Pulp Production
  • Evaporation Equipment for Pulp and Paper Mills
  • Pulping Machines
Engineering
  • Wet Lap/Pulp Baling System
  • Pulp Drying System
  • Newly Designed High-Speed Tissue Making Line with Energy-Saving Deinking System
  • H.C. Pulping System
  • D-Type Pulping System
  • Disperser System
  • Pulp Molded Product Making System
  • Sludge Handling System
Contact Us
No. 3 North Tieling Road, Minhou, Fuzhou City, Fujian Province, China
info@fjqj.com
+86-18859150386
+86-591-22628228
+86-591-22079666
Supported by ETW International Inc. USA