TEMPERATURE VS TIME SEQUENCES TO PALLIATE DEACTIVATION IN PARALLEL AND IN SERIES-PARALLEL WITH THE MAIN REACTION - PARAMETRIC STUDY

The calculation of temperature vs. time sequences to palliate catalyst deactivation in an integral reactor has been studied either by mainta ining constant the conversion at the reactor outlet in a simple reacti on or by maintaining constant the concentration of a given component a t the outlet in a complex reaction system. The experimental systems st udied, which are a simple one (dehydration of 2-ethylhexanol) and a co mplex one (isomerization of cis-butene), have kinetic models of the La ngmuir-Hinshelwood-Hougen-Watson type for the main reaction and deacti vation, with deactivation by coke dependent on the concentration of th e reaction components. In the reaction of dehydration of 2-ethylhexano l deactivation occurs in parallel with the main reaction and in the is omerization of cis-butene deactivation occurs in series-parallel with the main reaction. A parametric study has been carried out for both re action systems. The sequences calculated have been experimentally prov en in an automated reaction apparatus.