New concept for refining control

Authors & references

Authors:

Anders Karlström, Chalmers University of Technology

References:

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3. Isaksson, A.J., Horch, A., Karlström, A., Allison, B.J. and Nilsson, L. 1997. Modelling of mechanical thrust in TMP refiners, Int. Mech. Pulping Conf. Stockholm, 9–13 Juni:87–93.
4. Sabourin, M., Wiseman, N. and Vaughn, J. 2001. Refining theory considerations for assessing pulp properties in the commercial manufacture of TMP. 55th Appita Annual Conference, Hobart, Australia 30 April-2:195–204.
5. Karlström, A., Berg, D. and Eriksson, K. (2005). Developments in soft sensors for measurement of refining parameters, Scientific and technical advances in refining and mechanical pulping, Barcelona, Spain, 28 Feb.–4 Mar. 2005. Pira International, Leatherhead, UK, Paper 5.
6. Berg, D. 2005. A Comprehensive Approach to Modeling and Control of Thermomechanical Pulping Processes, Lic. thesis. Dept. of Signals and Systems, Chalmers.
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8. Eriksson, K. 2009. Towards improved control of TMP refining processes, PhD thesis, Chalmers University of Technology, Göteborg, Sweden.
9. Karlström, A. 2013. Multi-scale modeling in TMP-processes, 8th Int. Fundamental Mech. Pulp Res. Seminar, Åre, Sweden.
10. Karlström, A. and Eriksson, K. 2014a. Fiber energy efficiency Part I: Extended entropy model. Nord. Pulp Paper Res. J. 29(2):322–329.
11. Karlström, A. and Eriksson, K. 2014b. Fiber energy efficiency Part II: Forces acting on the refiner bars. Nord. Pulp Paper Res. J. 29(2):332–343.
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13. Karlström, A. and Eriksson, K. 2014d. Refining energy efficiency Part IV: Multi-scale modeling of refining processes. Nord. Pulp Paper Res. J. 29(3):409–417.
14. Karlström, A. and Hill, J. 2014a. Refiner Optimization and Control Part I: Fiber residence time and major dynamic fluctuations in TMP refining processes. Nord. Pulp Paper Res. J. 29(4):635–652.
15. Karlström, A. and Hill, J. 2014b. Refiner Optimization and Control Part II: Test procedures for describing dynamics in TMP refining processes. Nord. Pulp Paper Res. J. 29(4):653–662.
16. Karlström, A. and Hill, J. 2015a. Refiner Optimization and Control Part III: Natural decoupling in TMP refining processes. Nord. Pulp Paper Res. J. 30(3):417–425.
17. Karlström, A., Eriksson, K. and Hill, J. 2015b. Refiner Optimization and Control Part IV: Long term follow up of control performance in TMP processes. Nord. Pulp Paper Res. J. 30(3):426–435.
18. Karlström, A. and Hill, J. 2017a. CTMP process optimization Part I: Internal and external variables impact on refiner conditions. Nordic Pulp & Paper Research Journal 32(1):6–45.
19. Karlström, A. and Hill, J. 2017b. CTMP Process Optimization Part II: Reliability in Pulp and Handsheet Measurements. Nordic Pulp & Paper Research Journal 32(2):253–265.
20. Karlström, A. and Hill, J. 2017c. CTMP Process Optimization Part III: On the Predicition of Scott-Bond, Z-strength and Tensile index. Nordic Pulp & Paper Research Journal 32(2):266–279.
21. Karlström, A. and Isaksson, A. 2009. Multi-rate optimal control of TMP refining processes, Int. Mech. Pulping Conf., Sundsvall, Sweden.
22. Karlström, A., Hill J., Ferritsius, R. and Ferritsius, O. 2015. Pulp Property Development Part I: Interlacing Undersampled Pulp Properties and TMP Process Data using Piece-wise Linear Functions. Nord. Pulp Paper Res. J. 30(4):599–608.
23. Karlström, A., Hill, J., Ferritsius, R. and Ferritsius, O. 2016a. Pulp Property Development Part II: Process Nonlinearities and its Influence on Pulp Property Development. Nord. Pulp Paper Res. J 31(2):287–299.
24. Karlström, A., Hill, J., Ferritsius, R. and Ferritsius, O. 2016b. Pulp Property Development Part III: Fiber Residence Time and Consistency Profile Impact on Specific Energy and Pulp Properties. Nord. Pulp Paper Res. J. 31(2):300–307.
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28. Karlström, A., Hill, J. and Johansson, L. 2018. An Overview of Some Efforts to Understand CD-refiners, Int. Mech. Pulping Conf., Trondheim, Norway.
29. Bengtsson, F., Karlström, A., Hill, J. and Johansson, L. 2019. Refining models for optimization and control – How to use such models for pulp and handsheet properties estimation. 11th Fundamental Mechanical Pulp Research Seminar, Norrköping.