Pelleting

The pelletising system is designed for processing dry stalk materials of all kinds, such as cereal straw, rapeseed straw, hay, miscanthus or similar products. The system works completely independently.
All necessary production steps from bale breaking to grinding, conditioning, pelletising and packaging are integrated.
All installations are carried out from a single source. This means that the system is immediately ready for operation after an intensive briefing.

Stationary pelletising
Thanks to the modular design of the pelletising system, our specialists can develop the optimum solution for your needs. With a strong and constant hourly output, stationary pelletising is the best choice for customers who value continuous operation with low maintenance costs.

 Mobile pelletising (On request)
The mobile pelletising plant can process largely unused agricultural by-products into pellets. The entire system is integrated into a lorry trailer and pelletises directly on site. This saves you high transport costs for the bales.

Stationary pelleting

  • For short transport distances between the field and plant 
  • High flexibility in design and installation 
  • Extensibility of the system 

Basic module consisting of:

  • buffer tank 
  • conditioning 
  • mixer 
  • press 
  • cooling trough 
  • filter unit 
  • cabinet 

Possible options 

  • Straw pelleting, with Straw and grinding system 
  • Bulk-pelleting with bulk adoption and grinding system 
  • Wood pelleting plants, with wood chippers for thin and thick wood 

More options 

  • pellet cooler 
  • Steam generating unit

Round or square bales can be used as starting material. The bales are picked up and broken up by the bale breaker. A frequency-controlled screw conveyor feeds the pelletiser, pellet press with flat dies. The pellets produced are screened, cooled and conveyed further. The easy-to-operate machine controls are located on the control cabinet;

 Hourly output
The hourly output was calculated at up to 1.2 tonnes/h for the entire system. The output depends on the material type and quality, the die and the degree of grinding. The calculation is based on the processing of dry, homogeneous wheat straw (residual moisture < 14%). Fluctuating qualities of the raw material to be processed can significantly influence the hourly output. A die configuration suitable for the material is necessary for processing with optimum performance.
Energy consumption
The installed power is 180kW. Of this, approx. 130kWh is consumed during operation. Depending on the type of material and settings.
The aforementioned systems are designed for single-shift operation up to 250 days a year, in compliance with maintenance regulations. Continuous system operation by at least one operator is required. 

Dimensions
The space requirement is 120m², with a height of 5.50m. The system can also be installed in a more compact form. Each system is assembled on site according to your requirements.

 

From straw to pellets

Bale shredder

Power connection: 22 kW
Hourly output: up to 1.5 t/h
(depending on material, residual moisture up to 12 %)
Material moisture: max. 14 %

Bale shredder for round and square bales with 2 scraper floors, a cutting roller and sieve.
Feed table for new bales with a length of 2.9 or 5.8 metres.
The discharge system with 2 augers feeds a constant quantity of material to the grinder.
The bonnet over the bale shredder minimises dust formation.
The gravity separator with 5 strong magnets provides additional protection for the grinder. All necessary brackets and pipe parts included.

Grinding

Power connection: approx. 50 kW
Hourly output: up to 2 t/h (depending on material, residual moisture up to 12 %)
Sieve: 20 mm / 8 mm
Material moisture: max. 14 %

One or two HIMEL STMi industrial straw mills with increased capacity and special sieve.
Powerful motor with 22kW or 30kW. Pipework for material separation.
Large-volume cyclone, ascending screw and rotary valve to the buffer tank.

Storage container

Power connection: approx. 3 kW
Volume: 8 m³
Tank for straw flour with a density of max. 50 kg/m³, with a volume of approx. 8 m³, with agitator to prevent bridging.
Fill level monitoring via rotary paddle indicator. Filter bonnet on the lid to compensate for the residual air pressure from the grinding process. 
Connection to filter unit, manhole and nozzle.

Conditioning

Power connection: approx. 5 kW
Diameter: 250 mm
Frequency-controlled dosing screw, as conveying screw with inlet and outlet.
Rotary valve between the dosing and conditioning screw, for unpressurised dosing.
Conditioning screw with special winding. Including all connections for conditioning.
Manual water dosing unit for a water line set up by the operator included.

Pellet press

Weight: approx. 4.5 tonnes
Power connection: 90 kW
Possible pellet Ø: 6, 8, 14 mm
Pellet press with flat die and 3 rollers for stalks.
1 die for hay, lucerne or straw for the production of pellets up to Ø14mm.
Substructure construction and all adaptations included.

Screening and discharge

Power connection: 4.25kW
A special design vibrating screen conveyor with screen bottom, suction connections (or hopper) for dust return to the storage container.
Turbine V25, cyclone on the storage container, rotary valve under the cyclone, pipework.
Conveyor belt with a length of 4.5 m at a 45° angle after the vibrating chute.
All nozzles, supports and brackets included.

Pellet cooling

Volume: approx. 2 m3
Power connection: approx. 3 kW
Conveyor belt from the vibrating chute to the silo.
Aeration silo with approx. 2 m³ capacity and aeration spout, manual slide and aeration fan.
The pellets cool down in the aeration silo for storage in BigBags.

BigBag packaging

Power connection: 0.35 kW
Conveyor belt from the cooling silo to the BigBag holder.
The big bag holder is suitable for bags up to 1000 kg and is adjustable in height and width.

Exhaust air filtration

Capacity: up to 8000 m³/h
Filter area: approx. 150 m²
Filter unit with cartridge filter and pneumatic cleaning. A dust container must be installed on site. All supports, spigots and brackets are included.

Compressor 270 litres

Power connection: 5.5 kW
Air volume: 270 l/min
Slow-running, powerful high-performance unit with 3 cylinders and machine-cast unit body.
Thick-walled air receiver for a long service life and V-belt drive with extra-large fan wheel.

HIMEL switch cabinet PLC

Power connection: approx. 185 - 190 kW
Switch cabinet with group switching, PLC control and touch panel.
Power display for pellet press, frequency converter. All large consumers with soft start control.
Overload protection for the pellet press and grinder via limit value regulation.
Most functions can be visualised and individually set using the touch panel.
 

Mobile pelletizing

Through the detailed planning our systems can be created with minimal space requirements.

All installations are carried out under one roof. Thus, the system is ready for operation after an intensive training immediately. We supply equipment ready to use.

Mobile pelletizing

  • Complete mobile system in the truck trailer
  • Integrates all production steps
  • Ideal for service providers
  • Pellet raw materials locally
  • Investment in overseas container

consisting of

  • Base module and options correspond to the stationary pellet plant
  • Current generator and external power supply available
  • Mounting platform
  • Enclosure
  • Trailer can be supplied