Year-end Sale % OFF 
Abstract
V2O5/TiO2 is an important catalyst used in many industrial reactions like selective oxidation of o-xylene to phthalic anhydride, selective catalytic reduction of NOx, selective oxidation of alkanes, etc. The partial oxidation of o-xylene to synthesize phthalic anhydride is an exothermic reaction and leaves hot spots on the catalyst’s surface. The yield of phthalic anhydride strongly depends on the activity and stability of the catalyst. In this work, a computational fluid dynamics (CFD) analysis has been conducted to compare the yield of lab prepared catalyst with the commercially used catalyst. This work is first attempt to simulate V2O5/TiO2 catalyst for cracking heavy hydrocarbons in the petrochemical industry using k- ε turbulence and species transport models in CFD. The results obtained are in the form of scaled residuals, area-weighted average, and contours of pressure and temperature. Simulation results of lab synthesized and commercially used catalysts, applying finite volume method (FVM) are compared, which emphasize the scope of CFD modeling in the catalytic cracking process of petrochemical industry.
Highlights
Catalytic cracking is one of the fundamental processes in petrochemical industries
This is the first attempt to model heavy hydrocarbon cracking in the presence of V2O5/TiO2 using computational fluid dynamics (CFD) with Finite Volume Method (FVM) by implemented suitable governing equations and boundary conditions
The objectives of this CFD modeling are 1) to compare the yield of phthalic anhydride obtained from commercially used catalyst and lab prepared catalyst, 2) to understand reaction chemistry and heat transport in the reactor, 3) to optimize operating conditions of the reactor to maximize the yield of phthalic anhydride [9]
Summary
Catalytic cracking is one of the fundamental processes in petrochemical industries. Heavy hydrocarbons are cracked catalytically to give valuable products. The temperature profile and hydrodynamics in the reactor are evaluated by applying industrial conditions To our knowledge, this is the first attempt to model heavy hydrocarbon cracking in the presence of V2O5/TiO2 using CFD with Finite Volume Method (FVM) by implemented suitable governing equations and boundary conditions. Simulation of ceramics monolith substrate reactor has been conducted to study the partial oxidation of o-xylene with air to produce phthalic anhydride. This research may be considered as a meager contribution to better understanding of the interaction between gas phase reactants in the presence of a catalyst The objectives of this CFD modeling are 1) to compare the yield of phthalic anhydride obtained from commercially used catalyst and lab prepared catalyst, 2) to understand reaction chemistry and heat transport in the reactor, 3) to optimize operating conditions of the reactor to maximize the yield of phthalic anhydride [9]. Assumptions 1) The ideal gas law is assumed to hold while calculating the pressure-velocity variations on account of convergence and molar expansion due to heavy hydrocarbon cracking and gas phase temperature [20]. 2) Catalyst particles are fixed as a cluster of a bed to account for the observed velocity of the gas [20]. 3) Mass and heat resistance are assumed as negligible Assuming plug flow conditions for both phases back mixing of multi-phases is neglected [20,21]
Sign-in/Register to view highlights & summary 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: Engineering, Technology & Applied Science Research
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.
