PELLETS
Logs as raw material source –
flexibility in pellet production
Processing logs to diversify raw material sourcing
In the past years, pellet plants have primarily relied on wood chips from sawmills as the raw material for producing high-quality wood pellets. This forms the ideal basis for premium pellets, commonly used in private households for stoves and boilers.
However, the global supply of wood chips is steadily declining, which is why logs are becoming increasingly important as an alternative raw material source for pellet production. In addition, producing wood chips in-house provides greater flexibility and independence in raw material sourcing.
Holtec is responding to this development with customised wood yard concepts that enable the efficient processing of logs, depending on wood quality and the required production capacity. Our solutions ensure the production of high-grade wood chips – a key prerequisite for manufacturing first-class pellets.
As the supply of wood chips, a by-product from sawmills, continues to decline, more and more pellet plants are turning to logs as a raw material to secure production.
Debarking with Rotary Debarker
For the production of high-quality, standard-compliant pellets, log debarking is essential. Industrial logs with curvatures, as well as short logs with small diameters, can be debarked most efficiently using a Rotary Debarker.
In this machine concept, the bark is broken open by cam-equipped shafts during longitudinal transport and separated from the log through rotation.
The Vario-Barker, developed by Holtec, has already been successfully implemented more than 15 times and is the only machine on the market with a hydraulically adjustable inclination. This allows the debarking performance to be precisely adapted to the specific wood characteristics.
The use of industrial wood extends the procurement criteria for logs – resulting in lower costs and greater flexibility in raw material supply. Thanks to the modular design of the Rotary Debarker, performance is virtually unlimited in terms of scalability. For smaller capacities and stand-alone-operation, our Batch-Debarkeris ideal and can, if required, be gradually integrated into a stationary plant concept.
No matter what your requirements are – HOLTEC offers suitable plant concepts for all performance classes.
Chipping line for pellet production:
Wood yard with Rotary Debarker and drum chipper for the production of wood chips for pellet production. Capacity approx. 30–40 t bd/h.
- Debarkers with a robust and solid design.
- Electric drive with fluid coupling and heavy-duty gearbox.
- Improved debarking performance through optimised tool geometry and tool arrangement on the rotor.
- Vario-swing function: adjustment of the machine inclination to current operating conditions (required performance, log condition in terms of temperature, moisture, etc.), enabling active machine control and direct influence on the debarking result.
- Modular design for different performance range.
- Various tool configurations available.
- High degree of pre-assembly – reduced on-site installation effort and minimised foundation work.
- Professional hydraulic piping, cleaned, tested and largely pre-installed at the factory.
- Debarkers for small and medium performance ranges.
- Discontinuous batch operation.
- Degree of debarking can be individually adjusted via dwell time.
- Robust design – based on the proven concept of the Variobarker.
- Modular design for log lengths from 2.5 to 6.5 m.
Here you can find our current brochures and information material:
