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
Brown stock washing – models and calculations Modelling of brown stock washing systems consisting of several washing units serves two purposes: modelling of individual washers and using the models in design or in solving the problems in the operation or efficiency of the washing equipment. modelling the whole washing line to study its efficiency and
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 16.11.2020