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Situation • Lack of knowledge about the temperature distribution inside the stock. Thus the feedback control due to stock temperature is limited • High energy consumption of the furnace due to wrong operation • Installation of furnace control systems at existing furnaces is expensive and time consuming
Solution • 2-dimensional online calculation of the temperature distribution inside the stock • Estimation of the expected drop out temperature of the stock, due to actual furnaces operation. Control of the furnace with respect to this temperature (model predictive control) • Integration of the experience of the furnace operator by a rules based system • Closed software-package for the furnace control system based on an ORACLE-database
Advantages • Higher temperature accuracy and enhanced quality of reheating • Minimisation of the energy consumption • Rapid installation and start of operation because of simple set-up mechanisms for the furnace geometry • Simple optimisation of the furnace operation by offline simulation using the same system as for online control
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