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Temperature & char bed control
After reading this article you will..
- learn the importance and basic principles of temperature profile and char bed control and their connections to liquor feed and air control.
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
Authors:
Professor Emeritus Kauko Leiviskä, University of Oulu
References:
- Uronen, P., Jutila, E. and Pantsar, O. 1978. A practical approach to the control of recovery boilers. IFAC Proceedings Volumes 11(1):249-253. (Presented in the 7th Triennial World Congress of the IFAC on A Link Between Science and Applications of Automatic Control, Helsinki, Finland, 12-16 June).
- Sutinen, R., Aksela, R. and Huovinen, N. 1983. Computer control of sulphite recovery boiler and evaporation plant at Finnish mill. In: 5th International IFAC/IMEKO Conference on Instrumentation and Automation in the Paper, Rubber, Plastics and Polymerization Industries. Antwerp, Belgium, October 11–13. pp. 107–114.
- Tran, H., Pryke, D.C. and Reeve, D.W. 1986. Control of Fireside Deposits in Kraft Recovery Units. Pulp and Paper Canada 87(12):T435-T439.
- Rastogi, L. K., Spannbauer, J. P., Goto, K., et al. 1982. Advanced recovery boiler control – the evolution and state of the art. In: TAPPI 1982 Pulping Conference Proceedings. Toronto, Ontario, October 25–27. TAPPI Press, Atlanta, 492–512.
- Smith, D. B., Edwards, L. L. and Damon, R. A. 1991. Development and application of a real-time recovery boiler expert system. In: 1991 TAPPI Engineering Conference. Nashville, TN, September 30–October 3. TAPPI Press. pp. 259–265.
- MacCallum, C. 2014. Maximize then optimize the reduction efficiency in a kraft recovery boiler. Western Canada BLRBAC meeting, Vancouver, April 2014, 7 p.
- Pantsar, O. 1979. Computer control for recovery boiler is success at Finnish mill. Pulp and Paper, 53(8):142.
- Lampela, K., Mikkonen, J. and Leiviskä, K. 1996. Experiences of the Fuzzy Logics in Pulp Mill. In: Proceedings TOOLMET ’96 – Tool Environments and Development Methods for Intelligent Systems. University of Oulu, Oulu. pp. 120–131.
- Mikkonen, J., Koskinen, J. and Hanhinen, J. 1994. Fuzzy control in the recovery boiler. Paperi ja Puu 76(5):314–317.
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This page has been updated 15.11.2020