Nonisothermal photochlorination of methyl chloride in the liquid phase

Cabrera, Maria Ines; Alfano, Orlando Mario; Cassano, Alberto E.

doi:10.1002/aic.690371005

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…About a decade ago, De Bernardez and Cassano, , Clariá et al, , Alfano et al, − , Alfano and Cassano, , Esplugas et al, Vicente et al, Cabrera et al., − and Tymoschuck et al, , successfully used source models with both voluminal and superficial emission (the latter being either isotropic or diffuse) in a variety of reactor configurations. Computer times were reasonable, and results agreed quite satisfactorily with bench-scale experimental data, with no experimentally adjustable parameters required.…”

Section: Introductionmentioning

confidence: 99%

Simplified Extense Source Model for Photoreactor Analysis and Design

Irazoqui

Isla

Cassano

2000

Ind. Eng. Chem. Res.

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Most of the research work on photoreactor analysis, modeling, and design published so far relies on two approaches to represent the emission of tubular radiation sources: the line (linear) source models (LSMs) and the extense (three-dimensional) source models (ESMs). It is widely recognized that the ESMs give the more realistic representation of the emission phenomenon so far; however, they are rather difficult to use in some applications, especially when indirect radiation plays a dominant role. On the other hand, LSMs are simpler, and in some cases, mostly when reflected radiation has not been involved, they have been used with success. In this work, the simplified extense model (SEM), systematically derived from the extense source model with voluminal emission (ESVE), is proposed. The SEM retains all of the simplicity of the LSM for the prediction of the direct radiation contribution, while rendering closed mathematical expressions that give a more realistic and often very accurate representation of the reflected radiation inside reflecting cylindrical cavities with elliptical cross sections. The average incident radiation on the reactor surface at the midreactor length as predicted with the SEM never differs by more than 12% of the average value computed with the ESVE. Moreover, for different sets of frequently used parameter values characterizing the shape of the elliptical mirror and the reactor, the compared average values agreed within 5% of the reference value given by the ESVE. Within the same parameter range and for eccentricities of about e = 0.4, nonaveraged values of the incident radiation computed at different points on the external surface of the reactor wall at the midreactor height position using the SEM and the ESVE models agreed remarkably well, to the point that, under certain circumstances, the profiles obtained are not easily distinguishable from one another. The SEM brings together simplicity of implementation with desirable accuracy for a wide set of values of the apparatus parameters used to illustrate the proposal.

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Section: Introductionmentioning

confidence: 99%

Simplified Extense Source Model for Photoreactor Analysis and Design

Irazoqui

Isla

Cassano

2000

Ind. Eng. Chem. Res.

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“…In some cases, for example in the photochlorination of methyl chloride, several patents describe processes conducted under moderate pressures (Massini, 1984; Holbrook and Morris, 1986). Also, Cabrera et al (1991) have published bench-scale results in a flow reactor, in the liquid phase, and under pressure. There is also one paper that reports a sulfochlorination performed under pressure in a 61-m spiral coil reactor, with an external pressure counteracting the internal pressure of the reaction tube (Boynton et al, 1959).…”

Section: Introductionmentioning

confidence: 99%