Abstract
Catalytic naphtha reforming is extensively applied in petroleum refineries and petrochemical industries to convert low-octane naphtha into high-octane gasoline. Besides, this process is an important source of hydrogen and aromatics obtained as side products. The bifunctional Pt-catalysts for reforming are deactivated by coke formation during an industrial operation. This results to a reduction in the yield and octane number. In this paper modeling and optimization of a semi-egenerative catalytic reforming of naphtha is carried out considering catalyst deactivation and a complex multicomponent composition of a hydrocarbon mixture. The mathematical model of semi-egenerative catalytic reforming considering coke formation process was proposed. The operating parameters (yield, octane number, activity) for different catalysts were predicted and optimized. It was found that a decrease in the pressure range from 1.5 to 1.2 MPa at the temperature 478–481 °C and feedstock space velocity equal to 1.4–1 h induces an increase in the yield for 1–2 wt.% due to an increase in the aromatization reactions rate and a decrease in the hydrocracking reactions rate depending on the feedstock composition and catalyst type. It is shown that the decrease in pressure is limited by the requirements for the catalyst stability due to the increase in the coke formation rate. The criterion of optimality is the yield, expressed in octanes per tons.
Highlights
Catalytic reforming of naphtha is one of the most significant petrochemical processes in the world based on obtaining a high-octane component for motor fuel
There are several types of reactions, which occur during catalytic reforming process. They include the reactions of dehydrogenation, isomerization, cyclization, aromatization, hydrocracking, hydrogenolysis, and coke formation
To verify the model developed, a comparison between experimental and calculated results have been made for each Semi-Regenerative catalytic Reformers (SRR) unit
Summary
Catalytic reforming of naphtha is one of the most significant petrochemical processes in the world based on obtaining a high-octane component for motor fuel. There are several types of reactions, which occur during catalytic reforming process. They include the reactions of dehydrogenation, isomerization, cyclization, aromatization, hydrocracking, hydrogenolysis, and coke formation. Some of these reactions increase octane number (isomerization, cyclization, aromatization), while the others can cause catalyst deactivation process (coke formation). The catalytic reforming reactions take place in the reactors on the layer of a catalyst consisting of Al2O3 support of c-modification and metals (Pt, Re, Ir, Ge, Sn, Cd) and
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
