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Grinder control functions
After reading this article you will..
- learn different ways to realise the basic controls of the individual grinder.
Process control and automation
- Introduction to process control and automation
- Development of process automation
- Fibre process automation
- Chemical recovery as a control object
- Advances in paper machine automation
- Paper machine as a dynamical system
- Tasks in paper machine control and management
- Control of stock flow concentration and quality
- Machine direction control
- Cross-directional control – The static optimisation
- Cross-directional control – Dynamics
- Cross-directional control – further aspects
- Controlling functional paper properties
- Managing grade chances in the paper machine
- Managing disturbances caused by broke and recovered solids
- Millwide systems
- Modelling and control methods
Authors & references
Edited by:
Professor Emeritus Kauko Leiviskä, University of Oulu
Based on: Björkqvist, T. & Tuovinen, O., Grinding control (Chapter 7, Process control in mechanical pulping). In: Leiviskä, K. (ed), Process and Maintenance Management, (Book 14), Papermaking Science and Technology. 2nd edition. Jyväskylä, 2009, Paper Engineer’s Association/Paperi ja Puu Oy. pp. 177–188.
References:
- Zupan, R., Mitchell, G., Burkett, W. and Kevin, L. 1990. Pulp mill modernization/replacement at Blandin Company Grand Rapids, Minnesota, U.S.A. In: 44th Appita Annual General Conference. Rotorua, New Zeeland, April 2–6. pp.C26.1–C26.15.
- Roberts, C.B. and Chapman, R. 1995. Precise control of the sharpening burr. In: International Mechanical Pulping Conference. Ottawa, Canada, June 12–15. pp. 45–48.
- Manner, H., Reponen, P., Vahteri, R. and Karpanen, T.1995. Effect of water jet pulpstone conditioning on mechanical pulp and paper quality at Anjala paper mill. In:TAPPI 1995 International Mechanical Pulping Conference. TAPPI PRESS. p. 35.
- Puurunen, A., Blomqvist, S. and Ora, M. 1997. First mill scale experience of the Waterjet pulp stone conditioning system at UPM-Kymmene Voikkaa and Rauma mill. In: 1997 Pulping Conference. San Francisco, CA, October 19–23. pp. 317–322.
- Kärnä, A. and Liimatainen, H. 1998. Pat. FI 64666. Menetelmä hiomisprosessin säätämiseksi uunihiomakoneessa. Oy Tampella Ab, Finland. Appl. 813842.
- Haka-Risku, J. 1998. Batch control of pressure grinding (in Finnish). MSc. thesis. Tampere University of Technology. Automation and Control Institute. 97 p.
- Kärnä, A. and Liimatainen, H. 1985. Control of pressurised grinding. Initial experiences at Anjala. Pulp Paper Canada. Vol. 86, Issue 12, pp. T377–T383.
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Exercises
This page has been updated 14.11.2020