EXPERT CONTROL SYSTEM FOR COAL BLENDING PROCESS IN AN IRON AND STEEL CORPORATION

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Based on the statistical data and experience knowledge of the coalblending and coking process, a mathematical model and rule model which forecast the quality of coke and compute blending ratio of coal (BRC) were presented. An algorithm to compute BRC was provided by combining the two models mentioned above. A twolevel expert control system (ECS) composed of industrial computers and a Honeywell S9000e controller was designed to calculate BRC and control the coalblending process, which can not only guarantee the precision of calculating BRC but also make the actual BRC follow the target BRC. The accuracy of coal blending and the prediction precision of coke quality have been come up to 97% and 95% respectively.