True optimisation of a precalciner using Model Predlctive Control

摘要

The human-machine interface of Expert Optimizer makes it easy for the kiln operators at Lagerdorf to understand what is happening and to interact with the system. The web-based thin client running on Microsoft Internet Explorer requires minimal installation and maintenance. The operator is able to modify a number of parameters such as temperature set-points, master fuels and maximum and minimum fuel rates. Expert Optimizer informs the operator with an alarm if, due to the current conditions or the parameters set by the operator, control of the precalciner is not possible within the constraints set. In summary, we have looked at a real life example of using multiple alternative fuels in a precalciner. We have seen how, by using the advanced yet simple-to-use modelling tools in Expert Optimizer, we have been able to model the process using MPC and MLD. As the results from Lagerdorf show, the implementation has lead to significant improvements in calciner stability and overall kiln performance.