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Complete EFB Pellet Mill Production Line Solution

We set up the Complete EFB Pellet Mill Production Line Solution that will produce pellets with the world standard technologies!


Raw Material

  • Pre-treatment
    Section

  • Crushing
    Section

  • Conveying
    Section

  • Drying
    Section

  • Pellet Mill

  • Cooling
    Section

  • Screening
    Section

  • Packaging
    Section

  • Dust Control
    System

Finished Product

Pre-treatment : This section is more suitable for the larger raw materials in the early stage, and it is not easy to directly crush or granulate through the crusher. But sometimes this section can be omitted. For example, the sawdust pellet production line can directly pelletize, and this section is not needed.

Crushing Section : This section is usually used in biomass pellet production line, forage gress pellet production line and nutshell straw pellet production line. For example, the SFSP hammer mill is used for wood and fruit shells, and the straw/alfalfa/husk/grass crusher is used for grass and straw. Different raw materials are equipped with different types of crusher.

Conveying Section : Conveying equipment is mechanical equipment that transports bulk cargo and unit goods from a loading point to an unloading point along a certain route in a continuous manner. The conveying equipment of RICHI machinery includes screw conveyor, scraper conveyor, belt conveyor and Bucket elevator.

Drying Section : To dry materials and remove the moisture from 50% to 15-17%. Itincludes: --Burningstove,tosupplyhotair --Drumdryer --Dischargingcyclone.

Pellet Mill: Wood pellet machine, also known as biomass pellet machine, has a wide range of raw materials: straw shells include wood, straw, sawdust, cotton stalks, rice husks, peanut shells, sunflower shells, coconut shells, coffee shells, bamboo, etc. . The grasses are alfalfa, hops, hemp, hay, grass, etc. In addition, there are organic fertilizer granulator, cat litter granulator and so on.

Cooling & Section : Pellets come out from pellet machine, its temperature is around 70℃, by cooling system, It can cool down to room temperature immediately. By momentary cooling, the hardness of pellets will become more stronger.

Screening Section : The forming rate of pellet machine is around 98 % , so there are still have 2% powder in pellets,by screening, sort out all the powders from pellets.

Packaging Section : There are three kinds of automatic packaging machines produced by RICHI machinery: powder packaging machines, granule packaging machines and (universal) dual-purpose packaging machines.

Dust Control System : A dust collection system is an air quality improvement system used in industrial production to improve breathable air quality and safety by removing particulate matter from the air and environment. Dust collection systems work on the basic formula of capture, convey and collect.

Production Line Description

EFB pellet production line, It is also called palm fiber pellet production line and palm silk pellet production line. EFB refers to Empty fruit bunch. It is the by-products of palm oil mill. To extract 1kg of palm oil, there are 4kg palm biomass left, including EFBs, oil palm trunk and fronds.

EFB is abundant in Malaysia, Serbia, Indonesia, and other Southeast Asia areas, where palm trees are widely planted as a cash crop. EFBs are large in size. It contains cellulose and hemicelluloses lignin. The composition elements are carbon, hydrogen, nitrogen, sulphur, oxygen, etc. the moisture content is around 65%. High fiber and lignin content, high hardness and tenacity make EFB an excellent material for making pellets, but also make it difficult to pelletize.

EFB pellet production line

Since the EFB is large in size and high in moisture content, it will go through a series of processes such as crushing, drying, pelletizing, cooling and packing in order to get the final quality EFB pellet products.

EFB pellet mill production line flowchart
EFB pellet mill production line flowchart

Step 1 – EFB Shredder: EFB shredder is the equipment to process palm fruit bunch into palm fiber, which is easier to be dried and finely crushed in the following processes. Thus the final EFB pellets quality can be guaranteed.

Step 2 – Rotary Drum Dryer: The proper moisture content for pelletizing is 12-15%, while the moisture content in EFB is about 67%. Therefore, drying process is necessary for EFB pellets production. Special designed for drying the EFB fiber, our rotary drum dryer is high in efficiency but low in energy consumption.

Step 3 – EFB Fiber Crushing Machine: EFB fiber crushing machine is designed for crushing the EFB fiber into small pieces, and the machine is the necessary equipment for EFB fiber pelletizing. Usually the machine can be combined with the EFB shredder machine.

Step 4 – EFB palm fiber pellet Machine: Generally, the EFB pellets production is in large scale. Then our ring die EFB pellet machine is the most suitable machine for compressing the high density EFB fiber. Adopt high-precision gear driving, the output is improved by about 20% compared with the belt drive one. Imported high-quality bearings and oil seal are adopted to ensure efficient, stable and low-noise operation.

Step 5 – EFB Pellet Cooler: EFB pellets discharged from pellet mill are of high temperature about 65℃-90℃ as well as high moisture content of 17%-18%. Pellets will shock if the temperature or humidity is too high. Our counter current pellet cooler is used to remove pellet heat as well as the moisture content to ensure pellets quality and shelf-life.

Step 6 – EFB Pellet Packaging Machine: After cooling, the packing process is necessary to protect the EFB pellet from damp and dust. Automatic EFB pellet packing machine is advanced designed and manufactured with PLC controlling technology. Equip with accurate measure instrument, it has high weighing precision, bagging speed and stable performance.

Notes: Raw materials should be sufficient to ensure the continuity of pellet production. So the location of the EFB pellet plant should be convenient for the raw materials transportation.

All the above processes are equipped with dust collector, which makes the whole process no dust pollution.

EFB(Empty Fruit Bunches) is pressed into pellets by a pellet machine
EFB(Empty Fruit Bunches) is pressed into pellets by a pellet machine

Advantages of EFB pellets

1. High heating efficiency: the EFB pellets can burn sufficiently in the boiler with only 5% ash residues. The calorific value is 4,200 – 4,900 kcal/kg, equivalent to sub-bituminous coal.

2. Low moisture content: EFB pellets contains 8-12% or less moisture, much less than EFB fibers (50-60%). Low moisture content can improve the combustion ratio and reduce the transportation cost.

3. Wide application: EFB pellets can be applied both in home and factory. You can use them in heating stove, cooking range and BBQ, or industrial boiler and power plant to take the place of coal.

4. Environmental friendly: efb pellets emit little smoke, noxious or particles gas in burning.

5. Convenient to use: As efb pellets are much more compact and denser than EFB fibers, they need smaller space and loading capacity, therefore less transportation cost.

6. No need for binders: EFB contains about 13-25% of lignin and 43-65% of cellulose. The lignin can play the role of binder in pelletizing.

EFB pellet production suggestions

Various of EFB pellets can be made based on the different requirements of the consumers. On investing EFB biomass pellet production, the following suggestions from successful EFB pellet plant investors should be considered:

Overall understanding of EFB pellet production line is necessary.

EFB pellet production procedures should meet the requirement of target markets.

Raw materials should be sufficient and should ensure the continuity of pellet production.

Quality of the raw materials should guaranteed. Raw materials with moisture content of 15%, is ideal while when it goes upper than 15%, the raw materials should be dried.

Location of the EFB pellet plant should be convenient for raw materials transportation.

A feasible survey is necessary to be conducted beforehand.

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