NEW PROCESS-CONTROL COMPUTER-SYSTEM FOR T HE BLAST-FURNACE PLANT OF AN INTEGRATED IRON AND STEEL WORKS

Introduction to the project to be realized. Tasks of the integrated pr ocess control computer system. Brief description of the plant units, i .e. the two blast furnaces, the hot-blast stoves and the central contr ol station for the entire blast-furnace plant. Description of the auto mation concept with the basic automation, the individual hot-blast sto ve plant computers, the burden computer and the main control computer for the blast-furnace plant. Application functions, e.g. process data acquisition, storage and display as well as model-aided hot-blast stov e process control. Description of the software structure and operator interface. Operational experiences: After certain adjustments of the c ontrol parameters in the hot-blast stove model it was possible to achi eve within a short time a steady operation both of blast furnace II an d of blast furnace III. The aimed natural gas consumption saving of ab out 5% has been exceeded. A more uniform blast-furnace gas consumption was also achieved.