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Black liquor evaporation control
After reading this article you will..
- learn the requirements for evaporation plant control.
- know the basic control functions.
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:
- Sutinen, R., Koskela, O., 1981. Control of the chemical recovery cycle in the pulp mill. In: Automation Days 81. Finnish Society of Automatic Control, Helsinki, Part 4. pp. 33–50. (In Finnish).
- Sutinen, R., Aksela, R. and Huovinen, N. 1983. Computer control of sulphite recovery boiler and evaporation plant at Finnish mill. IFAC Instrumentation and Automation in the Paper, Rubber, Plastics and Polymerisation Industries, Antwerp, Belgium 1983, 123-130.
- Foran, C.D. 2006. Tall oil soap recovery. TAPPI Kraft recovery short course.
- Brooks, T. R., Edwards, L. L. 1992. A real-time, model-based expert system for multiple-effect evaporators. TAPPI J. 75(11):131–135.
- Jutila, E., Leiviskä, K., Visuri, M. and Uronen, P. 1982. Optimizing energy in chemical recovery, PMS/CR. Tappi Journal 65(1):43-46.
- Gil, P., Duarte-Ramos, H., Dourado Correia, A. 1996. Dynamic modelling and optimal hierarchical control of a multiple-effect evaporator — superconcentrator plant. In: Doležal J., Fidler J. (eds) System Modelling and Optimization. IFIP — The International Federation for Information Processing. Springer, Boston, MA, 227-234.
- Costa, A.O.S, Lima, E.L. 2003. Modelling and Control of an Industrial Multiple‐Effect Evaporator System. The Canadian Journal of Chemical Engineering 81(5):1032-1040.
- Perrier, M., Paris, J. and Meyer-Heye, P. 2006. Steam usage reduction in a black liquor evaporation train. 56th Canadian Chemical Engineering Conference, Sherbrooke, QC, October 15-18, 2006,
- Platon, R., Amazouz, M., Labonne, G. and Gilbert, Y. 2008. Use of Data Driven Techniques to Analyze and Improve Black Liquor Evaporation PAPTAC: 2008 Control Systems/Pan-Pacific Conference, Vancouver, Canada.
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Exercises
This page has been updated 25.11.2020