Modeling and simulation results for heat recovery steam generators at steelmaking

Target of this work is the modeling and simulation of a waste heat boiler used for o-gas heat recovery in steelmaking. The paper describes the challengenes for the waste heat boiler operation due to the batch production process. A detailed model of the waste heat boiler and the main control circuits has been built. The controllers have been designed according to emperical methods. Simulation result are presented for the controlled waste heat boiler.