Wood handling control The wood handling process is simple and there is not much need for basic controls to keep the process alive. Nowadays energy and raw material efficiency are more and more important. In wood handling, the largest potential lies in the raw material savings. The upper level control thus mainly focuses on keeping
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Wood handling control
After reading this article you will..
- learn the basic principles of debarking control.
Content
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:
Ari Isokangas, University of Oulu
References:
- Koskinen, K. 1999. Wood handling applications. In Gullichsen J & Fogelholm C-J (eds.) Papermaking Science and Technology, Book 6A. Chemical pulping. Helsinki, Fapet Oy:331–491.
- Isokangas, A., Ala-Kaila, K., Sorsa, A., Ohenoja, M. and Leiviskä, K. 2014a. Characterisation of log loading process. Nordic Pulp & Paper Research Journal, 29(2):195–200.
- Finlex. Viranomaisten määräyskokoelmat. 18.12.2013 498/62/2013. [Online] Available from: http://www.finlex.fi/fi/viranomaiset/normi/404001/41503. In Finnish. [Accessed 3rd March 2020].
- Isokangas A., Ala-Kaila K., Ohenoja M., Sorsa A. & Leiviskä K. (2014b). Effect of log loading on the performance of wood room. Nordic Pulp & Paper Research Journal, 29(2):201–210.
- Isokangas, A, 2010. Analysis and management of wood room. Doctoral Thesis. University of Oulu, Oulu, 106 p.
- Öman, M. and Söderstam, G. 2001. Comparison of stored and green wood raw materials. Paperi ja puu 83(1):50–57.
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This page has been updated 23.11.2020
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