METHOD OF RELATED AUTOMATIC CONTROLLING FOR SUPPLYING OF ENERGY CARRIER INTO BLAST FURNACE Russian patent published in 2003 - IPC

FIELD: metallurgy, in particular, blast-furnace process. SUBSTANCE: method involves measuring and registering energy-carrier flow rates - controlling actions; measuring, evaluating and registering state parameters and disturbances to provide for evaluating coefficients of energy compensation balance equations for top part and bottom part of blast furnace with the use of thermal state index of blast furnace top and bottom parts; relating energy-carrier flow rates with one another in automatic mode through respective automatic ratio regulators; preliminarily setting basic values of energy-carrier flow rates in accordance with conditions providing for normal running of blast furnace; selecting control energy-carriers flow rate; determining on the basis of energy compensation balance equation solutions the ratios between current energy-carrier flow rates separately for static and dynamic control modes; registering deviation of energy-carrier control flow rate from basic value; determining respective settings by regulators of ratio from energy compensation balance equation solutions simultaneously for top and bottom parts of furnace; calculating said settings and carrying them out in static control mode and in dynamic control mode; making energy-carrier flow rates into correspondence with required ratios by means of respective ratio regulators. Method allows blast-furnace process to be controlled by regulating energy-carrier supplying-controlling actions in time with process in automatic mode without operator's participation. EFFECT: reduced costs of controlling and calculating facilities and improved control precision. 3 dwg