Automatic combustion control of the ArcelorMittal Tubarao coke oven batteries

The objective of the automatic combustion control is to guarantee the operational stability of the coke batteries based on the control of the coking time. This control is guided by a mathematical model whose inputs are process variables and raw materials parameters; outputs are combustion parameters. Coking time out of specification can cause lack of thermal input or extreme thermal input to the battery, with reduction of useful life of the ovens. This paper presents the evolution of the performance of the burning process, providing a stability of the coking time.