Solid−Liquid Equilibria for Binary Mixtures Composed of Acenaphthene, Dibenzofuran, Fluorene, Phenanthrene, and Diphenylmethane

Lee, Ming‐Jer; Chen, Chang-Hsin; Lin, Ho-mu

doi:10.1021/je990021c

Cited by 12 publications

(17 citation statements)

References 12 publications

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“…The lowest melting temperature (at eutectic point) of each diphenyl ether binary is lower than the melting temperature of the corresponding pure model compound: acenaphthene, dibenzofuran, fluorene, and phenanthrene by 73.6, 65.1, 92.4, and 80.0 K, respectively. The effects of the addition of diphenyl ether on the SLE behavior are comparable with those of diphenylmethane (Lee et al 1 ).…”

Section: Results For Binary Systemsmentioning

confidence: 99%

“…However, its boiling point is too low to keep the additive in the liquid phase after the recovery of wash oil at temperatures as high as 443 K. As a consequence, a good modifier for improving the performance of aromatics removal should be that it is not only low melting but also high boiling. Lee et al 1 suggested that diphenylmethane is a potential modifier for this purpose. On the basis of molecular structure and physical properties, diphenyl ether (the normal boiling temperature is 516.32 K and the normal melting temperature is 300.0 K) is also expected to be a potent modifier.…”

Section: Introductionmentioning

confidence: 99%

“…The performance of wash oil is governed by its phase behavior. The solid-liquid equilibrium (SLE) data for some relevant binary systems are available in the literature, such as dibenzofuran + fluorene (Sediawan et al 2 ) and acenaphthene + dibenzofuran, acenaphthene + fluorene, and acenaphthene + phenanthrene (Lee et al 1 ). The binary data are needed for the determination of model parameters, with which the phase behavior of a multicomponent system can be estimated.…”

Section: Introductionmentioning

confidence: 99%

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Fundamental Study of the Phase Behavior of Wash Oil with Diphenyl Ether

Lee

Chen

Lin

2000

Ind. Eng. Chem. Res.

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Diphenyl ether is a potential modifier to decrease the melting temperatures of wash oils and thus to prevent solid formation from the recycled stream in an aromatics removal process. Fundamental study of the solid-liquid equilibria for the related mixtures was undertaken in the present work. Solid-liquid equilibrium data were measured for binary and multicomponent mixtures containing model compounds of wash oils (acenaphthene, dibenzofuran, fluorene, and phenanthrene) and diphenyl ether. The results showed that adding diphenyl ether substantially lowered the melting points of wash oils. A series of batch distillations with various initial feeds were also made to investigate further the property changes of the wash oils before and after recovery. It was found that diphenyl ether could still remain in the residues (the recovered wash oils) and changes in the melting temperature of oils were minor. These low-melting wash oils can be recycled directly to benzol scrubber for reuse. The binary solid-liquid equilibrium data were correlated with the NRTL model. The solution model with the determined parameters is capable of predicting the solid-liquid equilibrium temperatures of the pseudo-binary (multicomponent) system to an AAD of 0.3%.

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Section: Results For Binary Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fundamental Study of the Phase Behavior of Wash Oil with Diphenyl Ether

Lee

Chen

Lin

2000

Ind. Eng. Chem. Res.

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“…The SLE data were measured in the present study by a solid-disappearance method. This method has been widely used by a majority of research groups in the world, including Prof. McLaughlin, LSU, USA; Prof. Domanska, Warsaw Technical University, Poland; Prof. Chivate, University of Bombay, India; Prof. Makita, Kobe University, Japan; and our group. , Typically, this method measures the SLE data to an accuracy of ±0.2 K. Lee et al compared the melting temperatures of dibenzofuran and fluorine determined from the solid disappearance method with those from DSC (Sediawan et al). The differences are found to within 0.4 K.…”

Section: Experimental Methodsmentioning

confidence: 99%

Separation of Closely Boiling Compounds of 2-Methoxyphenol and 1,2-Dimethoxybenzene with Diphenylmethane as Entrainer

Lee

Chou

Lin

2003

Ind. Eng. Chem. Res.

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Solid-liquid equilibrium data were measured for binary and ternary mixtures composed of diphenylmethane with closely boiling compounds: 2-methoxyphenol (or guaiacol, CAS [90-05-1]) and 1,2-dimethoxybenzene (or veratrole, CAS [91-16-7]). Experimental results revealed that all the binaries behave as simple eutectic systems. The eutectic loci were also observed for the mixtures of diphenylmethane + 2-methoxyphenol + 1,2-dimethoxybenzene, from which a ternary solid-liquid equilibrium phase diagram was obtained. A feasible separation sequence, on the basis of the phase diagram, was then proposed to separate the mixture of 2-methoxyphenol and 1,2-dimethoxybenzene by means of extractive crystallization with diphenylmethane as an entrainer. The Wilson and the NRTL models were employed to correlate the equilibrium data of binary systems. These two models with the determined parameters predicted the soliddisappearance temperatures of the ternary system to grand average absolute deviations of better than 0.43%.

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“…The melting point needed was calculated by interpolation of the binary solid−liquid equilibrium data 8 …”

Section: ■ Thermodynamic Modelsmentioning

confidence: 99%

Solid–Liquid Phase Equilibria of Ternary Mixtures Containing 1,2-Dihydroacenaphthylene and Dibenzofuran

et al. 2014

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Ternary phase diagram data of 1,2-dihydroacenaphthylene-dibenzofuran mixtures in a series of alcohols, including methanol, ethanol, propan-2-ol, propan-1-ol, butan-1-ol, and pentan-1-ol were measured using a dynamic method at 308.15 and 313.15 K. The experimental data were correlated with the Wilson model (including pseudobinary systems), UNIQUAC model, and NRTL model. The results indicate that pseudobinary systems with the Wilson equation give a better description of the solubility of the ternary system. The eutectic point shifts toward dibenzofuran when the more polar methanol and ethanol are used. This shift may help achieve a more efficient separation of 1,2-dihydroacenaphthylene and dibenzofuran.

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Solid−Liquid Equilibria for Binary Mixtures Composed of Acenaphthene, Dibenzofuran, Fluorene, Phenanthrene, and Diphenylmethane

Cited by 12 publications

References 12 publications

Fundamental Study of the Phase Behavior of Wash Oil with Diphenyl Ether

Fundamental Study of the Phase Behavior of Wash Oil with Diphenyl Ether

Separation of Closely Boiling Compounds of 2-Methoxyphenol and 1,2-Dimethoxybenzene with Diphenylmethane as Entrainer

Solid–Liquid Phase Equilibria of Ternary Mixtures Containing 1,2-Dihydroacenaphthylene and Dibenzofuran

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