Welcome- Themes
- Introduction to forest-based bioeconomy
- Wood products
- Natural fibre products
- Man-made bio-based fibre products
- Bio-based nanomaterials
- Recycled fibre
- Pulping and biorefining
- Energy and biofuels
- Biomass chemistry and physiology
- Material testing and product properties
- Forests and other biomass resources
- Supply chain
- Process control and automation
- Asset management
- Business and investment planning
- Environmental control and management
- Learning paths
- Other resources
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- Profile
Models and calculations
After reading this article you will..
- learn to calculate the main operational parameters of the conventional pulp washing plant.
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:
- Jutila, E., Leiviskä, K., Visuri, M. and Uronen, P.: 1982. Optimizing energy in chemical recovery, PMS/CR. -Tappi 65(1):43-46.
- Santos, R.B. and Hart, P.W. 2014. Brownstock washing – A review of the literature. TAPPI J. 13(1):9-19.
- Kukreja, V. K. and Kumar J. 2012. Rotary Brown Stock Pulp Washers through Mathematical Models – A Review. Mathematical Theory and Modeling 2(3):43-51.
- Arora, S., Dhaliwal, S.S. and Kukreja, V.K. 2008. Mathematical modelling of the washing zone of an industrial rotary vacuum washer. Indian Journal of Chemical Technology 15:332-340.
- Kukreja, V.K. and Ray, A.K. 2009. Mathematical modeling of a rotary vacuum washer used for pulp washing: a case study of a lab scale washer. Cellulose Chem. Technol., 43 (1-3):25-36.
- Kumar, D., Kumar, V. and Singh, V.P. 2010. Mathematical modeling of brown stock washing problems and their numerical solution using MATLAB. Computers and Chemical Engineering 34:9–16.
- Dahl, O. 2011. Brown Stock Washing Efficiency — Past, Today and Future. Experts Seminar: Advanced Brown Stock Washing Optimization Solutions 16.5.2011, Radisson Blu Royal Park Hotel, Stockholm.
- Pacheco, C.R.F., de Paiva, J.L. and Raynol, A.S. Jr. 2006. Operational evaluation of rotary drum vacuum filters for brownstock washing using basic filtration parameters. Tappi J. 5(3):15-20.
Videos
Exercises
This page has been updated 22.03.2022