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Nielsen, Simon Klinge

Nielsen, Simon Klinge

Project title: Pelleting of Biomass

Industrial PhD Andritz Feed & Biofuel 

PhD period: 2017.09.01 – 2020.08.31.
Section: Esbjerg Energy Section
Research Programme: Biomass
Supervisor: Matthias Mandø, Company supervisor: Andreas Brinch Rosenørn
Contact information

Collaborator: Andritz Feed & Biofuel.
Funding: Andritz Feed & Biofuel, Innovation Fund Denmark. 


The global production of wood and biomass pellets is increasing. During the pelleting process, large compressional forces act on the pelleting die, which causes high degree of wear and high energy consumption. The current design of pelleting dies is developed on basis of experiences from trial-and-error processes.  The purpose of the project is to obtain a fundamental understanding of the physical processes that occurs in the pelleting die, when the biomass fibers are pressed to pellets. This shall be done by setting up a simulation tool, which can simulate the pelleting process. The simulations will be supported and validated by small- and large scale tests conducted during the project period. The simulations shall help to understand the pelleting process and optimize the die design with respect to energy consumption and durability.

Key points of the project:

  • Analyse the processes occurring in the pelleting die.
  • Find material properties via small scale experiments.
  • Set up constitutive models for the pelleting material.
  • Develop simulation code.
  • Perform full scale tests for validating simulation results.


Publications in journals and conference papers may be found at VBN.