Abstract

ARANI, H. M.; SHIRVANI, M.; SAFDARIAN, K.  and  DOROSTKAR, E.. Lumping procedure for a kinetic model of catalytic naphtha reforming. Braz. J. Chem. Eng. [online]. 2009, vol.26, n.4, pp. 723-732. ISSN 0104-6632.  http://dx.doi.org/10.1590/S0104-66322009000400011.

A lumping procedure is developed for obtaining kinetic and thermodynamic parameters of catalytic naphtha reforming. All kinetic and deactivation parameters are estimated from industrial data and thermodynamic parameters are calculated from derived mathematical expressions. The proposed model contains 17 lumps that include the C₆ to C₈₊ hydrocarbon range and 15 reaction pathways. Hougen-Watson Langmuir-Hinshelwood type reaction rate expressions are used for kinetic simulation of catalytic reactions. The kinetic parameters are benchmarked with several sets of plant data and estimated by the SQP optimization method. After calculation of deactivation and kinetic parameters, plant data are compared with model predictions and only minor deviations between experimental and calculated data are generally observed.

Keywords : Lumping; Reaction thermodynamics; Reforming; Naphtha.