Collect. Czech. Chem. Commun. 1993, 58, 1042-1054

Modelling of Steam Cracking. I. Simplified Mathematical Model of Steam Cracking Furnace and Its Identification

Josef Horák and Zdeněk Bělohlav

Department of Organic Technology, Prague Institute of Chemical Technology, 166 28 Prague 6, Czech Republic


A simplified mathematical model of a steam cracking furnace was constructed. The model involves adjustable parameters, values of which are to be evaluated on the basis of measurements available in industrial reactors. The following adjustable parameters are considered: the effective radiative heat transfer coefficient, the convective heat transfer coefficient, the mean relative reactivity of the reaction mixture. The sources of information which can be utilized in the model identification are discussed. A numerical procedure was developed for finding the best set of the adjustable parameters. The procedure is based on the analogy with single-input single-output control loops.