Collect. Czech. Chem. Commun. 1992, 57, 2113-2124

The Mathematical Model of Naphtha Steam Cracking

Zdeněk Bělohlav and Josef Horák

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


The mathematical model of naphtha steam cracking has been developed to predict products yields. The feedstock composition, feedstock rate, steam-oil ration, inlet temperature, outlet temperature and outlet pressure are introduced as inputs. The reaction model consists of two parts: the radical reactions of higher alkanes, higher alkenes, naphthenes and alkylaromatics and the formal molecular reactions of lower alkanes and lower alkenes. The model was identified using a series of large-scale experiments including four naphtha raw materials. Eight experiments were carried out for each naphtha kind at two levels of the temperature profile, feed rate and steam-oil ratio.