The aim of the project is to provide knowledge on how double disk refining can be more energy efficient. The research will be developed through optimization and modeling of the refiner, and by finding new technical solutions and process strategies both in test laboratory and factory scale together with the company Valmet.

Part 1 Modelling of DD refining

We will use these different methods to work with modelling of DD refining: SPH (smoothed particle hydrodynamics), DEM (discrete element method), DPFD (dissipative particle fluid dynamics) and MD  (molecular dynamics). The research project is developed through literature studies, modeling of a chips fragmentation, modeling of the system with several wood chips, development of model for refining in DD refiner and validation of validation models. The research will be developed by a PhD student for four years.

Part 2 New solutions for increased production flow 

Development and full scale testing will be carried out as a collaboration between FSCN and Valmet.