Oil palm tree is a multi-purpose plant and a productive biomass producer. Palm oil production is accompanied by 90% of oil palm biomass, such as palm kernel shell, oil palm wood, fronds and so on. Previously, these palm biomass materials are often treated as waste or burnt directly. Now, with the development of biomass fuels, oil palm waste can be processed into value-added pellets by palm waste pellet making machine which owns successful technology on oil palm biomass from waste to wealth.

Oil Palm Waste Pellet Machine

Oil palm waste pelletizer offered by us is a portable flat die pellet mill including flat die and rollers design. Flat die is featured with high hardness and wear resistance after heat treatment. Rollers can work with high speed during pelletizing process. Unique design of die holes and its diameters ensures high density pellet. Featured with compact structure and flexible design, this oil palm waste pellet machine is suitable for small scale pellet production. For large scale pellet making, ring die pellet mill is the perfect equipment.

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Advantages of Pellets Produced by Our Palm Waste Pellet Machine

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1. Higher energy density

2. Constant heating value

3. Easy to handle and store

4. Suitable for most boiler system

5. Environment friendly: generate low or   even no smoke during combustion

Types of Oil Palm Waste for Making Fuel Pellets

● Palm Kernel Shell
Palm kernel shells (PKS) are the shell fractions left after the nut has been removed after crushing in the palm oil mill. Palm kernel shells are a fibrous material and can be easily handled in bulk directly from the product line to the end use. PKS are the good quality biomass fuel with easy handling, easy crushing and limited biological activity due to low moisture content. With flat die pellet extruder, PKS can be compressed into pellets for heating.

Specifications for PKS

Calorific Value
around 4000 kcal/kg
Moisture Content
15-25%
Ash Content
3%
Volatile Matter
76%
Fixed Carbon
19%
Total Fiber
2% to 5% (max)

Specifications of PKS pellets

Calorific value
4200-4600 kcal/kg
Moisture content
10%
Ash content
less than 3%
Sulfur content
0.1%

● Oil Palm Wood
With carbon-free-emission feature, oil palm wood is considered as a good alternative renewable and sustainable energy source. Moreover, it is also low in cost, excellent year-round availability. So palm oil wood is favored by people to treat as raw materials for making pellets. Palm oil wood pellets are often used in biomass power generation, industrial boilers, furnace & foundries and brick kilns.

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Oil palm wood specifications

Moisture Content
60-70%
Calorific Value
around 1,800 kcal/kg
Ash content(wt%)
6-8%
Density
150-800kg/m3

Oil palm wood pellet property

Moisture Content
7-10%
Calorific Value
around 4,500 kcal/kg
Ash content(wt%)
< 1.5%
Bulk Density
680-730 kg/m3

● Oil Palm Frond 
Oil palm waste pellet machine is also suitable for oil palm frond which is usually regard as the feed for ruminants such as cattle, sheep, horse and goats. Oil palm frond contains high amount of fiber. The NDF (Neutral Detergent Fiber) content ranges from 63% to 80%, and ADF (Acid Detergent Fiber) content is in 45-57% range. Lignin content is also high with reported values ranging from 12% to 37%. To compress oil palm frond into pellets by palm waste machine can provide more nutritional and balanced diet for fattening ruminant animals.

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Whole Processes for Making Palm Waste Pellets 

Crushing—Drying—Pelletizing—Cooling—Packaging

♦ Crushing. Crushing palm wastes into small particles by wood hammer mill is important before pelletizing because this process enables better bonding and high density of finished palm waste pellets. You can choose different crushers to grind PKS, oil palm wood or palm frond.
♦ Drying. If pellet materials prepared for pelletizing contain around 8%- 12% moisture content, they are suitable for direct pelletzing. If their moisture content is higher than 12%, you need the drying machine to lower their moisture content.
♦ Pelletizing. For home pellet making or small scale factory production, you can choose small flat die pellet mill. If large productivity, you must need ring die wood pellet mill rather than small portable pellet mill.
♦ Cooling. Pellets just pressed out by the pellet mill are very hot, so they should be cooled naturally or by pellets cooling machine in order to be packed or for use.
♦ Packaging. Pellets can be packed either in small bags or large bags for difference selling purposes.