Nonuniform grid generation for boundary-layer problems

Agrawal, Ajay K.; Peckover, R S

doi:10.1016/0010-4655(80)90047-8

Cited by 20 publications

(17 citation statements)

References 6 publications

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“…The crucial variables for the process are: the length and diameter of the FFR, the flow of liquid reactant, the molar ratio between SO 3 and organic liquid, and the mole fraction of SO 3 in the gas phase and the temperature of the reactor jacket. To ensure convergence of the system the transformation of the equations proposed by Agrawal and Peckoever (1980) was chosen following the same development by Talens (1999). …”

Section: Numerical Schemementioning

confidence: 99%

Mathematical Model of a Falling Film Reactor for Methyl Ester Sulfonation

Ortega¹,

Medina²,

Palacios³

et al. 2009

Chemical Product and Process Modeling

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Methyl ester sulfonation with sulfur trioxide derived from oleum is possible under special conditions on a pilot plant scale. Quantum chemical calculations were used to study the relative stability between intermediates in the proposed mechanism. In this report an analysis of a mathematical model for a falling film sulfonation reactor is presented. It aims to estimate the temperature and conversion profiles of the thin film. The model treats the heat released and the trioxide sulfur dissolution assuming that the film theory is applicable. The temperature and concentration gradients can exist across the film during the chemical reaction. The equations were solved using finite differences. The most important data obtained by the mathematical model for a subsequent correlation with the properties of the reagents and product are the conversion, the density and viscosity of the sulfonic product. The results indicate an increase in the axial temperature of the liquid film and the conversion from the top reactor in accordance with the experimental results. It considers that at the upper section of the reactor the reaction is controlled by means of mass transfer due to gas phase turbulence. A mild conversion on the reactor bottom means that the liquid phase controls the mass transfer due to the amounts of sulfur trioxide transferred into the film which produces changes in the film composition.

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Section: Numerical Schemementioning

confidence: 99%

Mathematical Model of a Falling Film Reactor for Methyl Ester Sulfonation

Ortega¹,

Medina²,

Palacios³

et al. 2009

Chemical Product and Process Modeling

View full text Add to dashboard Cite

show abstract

“…The proposed model may be suitable for use in design and operation of industrial film reactors. To ensure convergence of the system of equations then transformation of the equations proposed by Agrawal & Peckover (1980) was chosen following the same development by Talens (1999). The set of equations resulting from the mass, momentum and heat transfer is solved numerically.…”

Section: Validation Of Modelmentioning

confidence: 99%