Pilot Plant Facilities

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Pilot Plant Facilities


Sample Preparation and Chip Testing:

  • Disc chipper – Chipping of wood logs or bamboo
  • Thickness, Round hole, Tyler sieve chip classification
  • Wood chip bark, rot and contaminant content; basic wood or bulk density


Circulation Liquor Digester (20-liter)
  • simulates continuous or batch kraft or Soda process with or without additives/surfactants and pre-hydrolysis studies using steam, water, or acid.
  • 2 – 3 kg OD sample per cook
    • Benefits include:
    • Most reliable yield data comparable to pulp mill data,
    • Customizability; eg. additives may be applied during cook, or layer cooks,
    • Larger pulp sample than smaller reactors that typically allows for brown and bleached (downstream) pulp strength studies
Autoclave Bomb Reactors ( 6 – liter and 1 – liter )
  • simulate batch kraft or soda-AQ, and custom projects.
  • 700 – 900g OD sample per cook for 6-L reactor and 80 – 100 g OD sample per cook for 1-L reactor
    • Benefits include:
    • Multiple cooks completed simultaneously in oil bath (up to three 6-L reactors and six 1-L reactors)
    • Small sample size accommodated
    • Excellent method for optimizing conditions or establishing target conditions
    • Ability to withstand high pressure cooks


  • Simulate defibering and washing
  • Range of plate sizes: 0.004”, 0.006”, 0.008”, 0.010”, 0.012”, 0.014”, 0.018”, 0.042”
  • Pin shredding screened pulp for representative sample testing


Atmospheric Mechanical Refiner (12 – inch diameter)
  • Interchangeable plates and patterns
  • Refine with plate gap from 0.05” to 0.055”
  • Available for running basic mechanical pulping studies
  • Determine wood brightness from chips
  • Refine fiber bundles or shives from high kappa cooks to desired target freeness 


Typical sample size is 300g OD pulp for most bag or reactor bleaching . Some options allow concurrent runs for increased quantities . All bleaching reactions include report of residuals, stage yield, kappa or brightness
Standard bag bleaching
  • Any atmospheric bleaching stage, temperature controlled by water bath
  • 150 – 300 g OD pulp per bag
Chlorine dioxide bleaching
  • In-house generated ClO2
Teflon-lined bomb reactor
  • 300 – 600 g OD pulp per reaction, depending on furnish
  • Horizontal tumbling
  • High temperature and pressure can be accommodated
  • Can be pressurized with oxygen before bleaching process
Large scale glass-lined reactor
  • 10 kg OD pulp per bleaching reaction
  • Stirred agitation at lower consistencies
  • Useful for alkaline (E), Chelation (Q) and peroxide (Ep) stages
Oxygen delignification reactor
  • Maximum 300 g OD pulp per reaction
  • Up to 110 ℃
  • Horizontal tumbling
Ozone bleaching reactor
  • Maximum 300 g OD pulp per reaction
  • Medium (10%) to high (30%) consistency
  • Stirred agitation

Pilot Plant Facilities

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