MODELING OF PHTHALIC ANHYDRIDE PRODUCTION PROCESS IN BOTH FIXED AND FLUIDIZED BEDS REACTORS

Main Article Content

ALI HABIBI MANESH

Abstract

The colorless solid, phthalic anhydride is an important industrial chemical, especially for the industrial scale production of plasticizers for plastics manufacturing. One of the most important approaches to obtain this widely used material in the production of dyes is via catalytic oxidation of ortho-xylene. The current study is aiming to simulate the phthalic anhydride production scale process employing computational fluid dynamics (CFD). Two types of reactor are considered: fixed and fluidized beds. Representative equations including kinetics, continuity, mass transfer, energy, momentum and pressure drop are solved simultaneously. Subsequently, the effects of inlet temperature on conversion percentage of phthalic anhydride production process is observed in detail. The ultimate goal of the investigation for the involved reactions which are pyrogenic, is controlling the peak temperature of the reactor. Our investigation shows that conversion percentage of phthalic anhydride in fluidized bed is much higher in compared to fixed bed. Furthermore, the results show that undesirable production conversion of fluidized bed is less proportional to fixed bed production scale.

Keywords:
Computational fluid dynamics, phthalic anhydride, fixed and fluidized beds, conversion ratio.

Article Details

How to Cite
MANESH, A. H. (2019). MODELING OF PHTHALIC ANHYDRIDE PRODUCTION PROCESS IN BOTH FIXED AND FLUIDIZED BEDS REACTORS. Journal of Basic and Applied Research International, 25(6), 283-289. Retrieved from http://www.ikprress.org/index.php/JOBARI/article/view/4796
Section
Original Research Article

References

Asen I. Anastasov. Deactivation of an industrial V2O5_/TiO2 catalyst for oxidation of oxylene into phthalic anhydride, Chemical Engineering and Processing. 2003;42:449-460.

Asen I. Anastasov. A study of the influence of the operating parameters on the temperature of the hot spot in a fixed bed reactor, Chemical Engineering Journal. 2002;86:287–297.

Alfredo E. Valera, Juan C. Garcia. Simulation of a pecked bed reactor, university of Carabobo; 2009. Valencia, Venezuela. Presented at the COMSOL conference Boston; 2001.

Yaidelin A. Manrique, Carlos V. Miguel, Diogo Mendes, Adelio Mendes, Luis M. Madeira modeling and simulation of a packed-bed reactor for carrying out the water-gas shift reaction. Int J Chemical Reactor Eng. 2012; 10(1):1542-6580.

Karanth NG, Hughes R. Simulation of an adiabatic packed bed reactor. Chemical Engineering Science. 1974;29(1):197–205.

Sullivan SP, Sani FM, Johns ML, Gladden LF. Simulation of packed bed reactors using lattice Boltzmann methods. Chemical Engineering Science. 2005;60(12):3405–3418.

Gimeno MP, Gascón J, Téllez C, Herguido J, Menéndez M. Selective oxidation of o-xylene to phthalic anhydride over V2O5/TiO2: Kinetic study in a fluidized bed reactor. Chemical Engineering and Processing: Process Intensification. 2008;47(10):1844–1852.

Dong Y, Keil FJ, Korup O, Rosowski F, Horn R. Effect of the catalyst pore structure on fixed-bed reactor performance of partial oxidation of n-butane: A simulation study. Chemical Engineering Science. 2016;142:299-309.

Poozesh S, Akafuah N, Saito K. NO formation analysis of turbulent non-premixed coaxial methane/air diffusion flame. International Journal of Environmental Science and Technology. 2016;13(2):513-518.

Froment GF, Bischoff KB. Chemical reactor analysis and design. John Wiley & Sons; 1990.

Saterfield CN. Heterogeneous catalysis in industrial practice, Mc Graw-Hill; 1991.

Sabri Ergun. Fluid flow through packed columns. Chem. Eng. Prog. 1952;48:89.

Grace JR. In handbook of multiphase systems. Hetsroni G. (ed.), Hemisphere Publishing, Washington, DC; 1982.

Godard K, Richadson JF. Correlation of data for minimum fluidising velocity and bed expansion in particulatly fluidised systems. Chem. Eng, Sci. 1969;24:363.