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Technical Guide Equipment selection before set up wood pellet plant

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Equipment selection before set up wood pellet plant

    Equipment selection before set up wood pellet plant
Product Details:
Place of Origin: CHINA
Certification: SGS,CE and ISO certificates
Payment & Shipping Terms:
Mini Order Qty: 1 x 8 Pcs
Pack Details: Wood Carton Packing
Delivery Time: 15-30 days after received the deposit
Payment Terms: T/T,L/C,Western Union

Wood Pelleting Process

  • Dry wood (8-10%) to the hammermill
  • Feed stock size not to exceed 1-3/16”x1-3/16”x3/8”
  • Conditioner after hammermill for moisture addition
  • Retention bin with at least 20 minute capacity
  • Moisture meter after retention bin
  • VFD Feeder for PM Conditioner
  • Conditioner
  • Pellet Mill
  • Cooler
  • Screener

1

Horizontal Flow

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3

4

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Water addition after hammermill

  • Add water so it can soak
  • Create homogeneous moisture in each particle, especially after dryer
  • Controlled flow from hammermill
  • Conditioner model LL or LT for larger capacities

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Moisture measured at inlet of ripening bin with online moisture analyzer

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Stable moisture for stable process conditions

  • Optimizes pellet quality
  • Minimizes energy usage
  • Provides longer die and roller life

Ripening at retention vessel

Mixing bin or vertical bin:

•  Variations in moisture

•  Variations in product type

8

Vertical bin:

  • First in first out
  • Larger volume, longer retention time

Mixing bin:

  • Homogenizes the raw material
  • Limited retention time

9

Equipment Selection

    Hammermills

  • When selecting a hammermill for wood grinding it is important to use the correct constant based on the size of incoming material.

Grinding Constants

Hard & soft wood 8-12% moisture

0

Hammermill screens

PELLETS

¼”– 5/16”

SCREEN HOLE

16/64th – 20/64th

Ancillary equipment for hammermill

VFD Screw Feeder

10

Air Siphon Feeder

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Air Assist package Alt II style III filter

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Pelleting

pellet mills

  • with 400 Hp.
  • Capacity 4 – 5 t/h

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Heavy Duty Low Speed Gearing

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Gear Box

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Shear Pin Protection

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Standard features on wood pellet mills

  • Closed End Corrugated Roller Assemblies with Spherical Bearings.
  • Bear Claw Die Clamp
  • Doors set-up with ability to use four knife post

–  If pellet length is an issue, cutter bars can be added

  • Air Actuated Feed Chute
  • Forced Lubrication
  • Auto Lube system
  • 18INF6.5 Conditioner at 300 rpm

Technical details

18

Grease lubrication for rollers

19

Conditioner model 18INF6.5

  • Shaft speed 300 rpm optimum speed giving minimum pulsing
  • Spider fitted at conditioner outlet to reduce pulsing

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Infusion Conditioner

  • Right Hand Access Doors
  • Inlet Magnet & Housing for Conditioner
  • Short Retention Inlet Drive with stainless steel clad shaft
  • Shaft Mounted Gear Reducer, 7.5 Hp. 300 RPM, shaft speed
  • Base Frame for 7930 Pellet Mill

COOLING WOOD PELLETS

Remove heat and moisture to acquire:

  • Dry pellets with hardness and strength

this provides:

  • Transport ability
  • Storage ability

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hot & moist pellets 180-230°F

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Pelletmill Controls

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Automation is available to control all of the pelleting process.

Other about Equipment selection before set up wood pellet plant
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Mark
  • info@pmmer.com
  • TEL:+86 371 61958708

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