Dynamic simulation of a thermomechanical pulp refiner
Journal article, 1997

The aim of this paper is to describe a model for dynamic simulation of a TMP refiner. The temperature profile along the radius of the refiner, outlet consistency and motor load are considered as outputs of the simulation, whereas the chip screw speed and dilution water flow setpoints are the inputs. The dynamic model of the refiner, as such, has been derived from first principles. The motor load and input dynamics, however, are based on black-box identifications. The model has been implemented in MATLAB/SIMULINK. Simulations are compared to corresponding data from experiments with the refiner.

Mathematical models

Thermomechanical pulping

Disc refiners


Parameter estimation


Alexander Horch

Alf J. lsaksson

Bruce J. Allison

Anders Karlström

Department of Control Engineering

Lennart Nilsson

Nordic Pulp and Paper Research Journal

0283-2631 (ISSN) 2000-0669 (eISSN)

Vol. 12 4 270-275

Subject Categories

Control Engineering



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