Effect of Solvents for the Production of Cyclopentane by Extractive Distillation

Lavanya, M.; Suresh, M.; Sairam, B.; Balu, K.

doi:10.1080/10916460600695462

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…By 2023, the global market of cyclopentane is expected to reach US$ 335.7 million, with an annual growth rate of 6.7% . Cyclopentane resource has been detected in light petroleum fractions like naphtha , and natural gas liquid; however, it is hardly separated as a commercial grade product through traditional fractionation operations owing to the formation of close-boiling/azeotropic mixtures with hydrocarbons possessing similar numbers of carbon atoms. Neohexane or 2,2-dimethylbutane (22DMB) is a major contaminant in cyclopentane.…”

Section: Introductionmentioning

confidence: 99%

“…It is also a high-quality blending component for clean gasoline with high octane number. , The composition of cyclopentane-neohexane from naphtha varies widely in volume from 92/8 to 29/71 . The discrimination of these two compounds is a great challenge because they not only exhibit extremely close boiling points of only 0.4 K difference but also form azeotropic components. , Considering the impossibility of splitting neohexane from cyclopentane by simple distillation operations, azeotropic and extractive distillations ,− have been designed to produce cyclopentane of higher purities. However, these heat-driven distillation-based hydrocarbon separations represent the most energy-intensive and operationally complex processes .…”

Section: Introductionmentioning

confidence: 99%

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Kinetic Molecular Sieving of Cyclopentane/Neohexane Mixtures by the MFI Zeolite with Intersecting 10-Ring Channels

Zhou

et al. 2021

Ind. Eng. Chem. Res.

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The separation of close boiling and azeotropic mixtures of cyclopentane and neohexane is highly challenging in petrochemical industries. Current solutions including azeotropic and extractive distillations require high energy costs and complicated operations. The alternative separation method based on physical adsorption is energy-efficient; however, it has not yet been utilized for the splitting of these two compounds. Herein, we present the kinetic sieving of the abovementioned mixtures by a commercially available zeolite, silicalite-1, which offers intersecting 10-ring channels to promote the adsorption of cyclopentane but possesses steric constraints on the intracrystalline transport of neohexane. In both vapor and liquid phases, the material allows for highly selective separations of cyclopentane/neohexane mixtures under dynamic conditions, which is highly promising for industrial applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kinetic Molecular Sieving of Cyclopentane/Neohexane Mixtures by the MFI Zeolite with Intersecting 10-Ring Channels

Zhou

et al. 2021

Ind. Eng. Chem. Res.

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“…Lee and Ronald 9 purified cyclohexane from a mixture of 85 wt % cyclohexane and 15 wt % 2,3-dimethylpentane using various mixed entrainers. Other works using mixed entrainer included Brown and Lee 10 and Song et al 11 Recently, Lavanya et al 12 reported the production of cyclopentane by extractive distillation. However, the previous works mentioned above are focused on hydrocarbon mixture of C 5 -C 7 .…”

Section: Introductionmentioning

confidence: 99%

Entrainer Screening for Separation of Isoparaffins and Naphthenes by Extractive Distillation

Liu

2009

Ind. Eng. Chem. Res.

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In the entrainer screening for separation of isoparaffins and naphthenes (C-9-C-14) by extractive distillation of D60 oil, various single entrainers and mixed entrainers were used and studied. Sulfolane was the most selective entrainer as a single entrainer was applied and the relative volatility of isoparaffins to naphthenes reached 1.648 as the sulfolane to oil ratio was 5:1. Both mixed entrainers of sulfolane + triethylene glycol and sulfolane + dimethyl phthalate show good synergistic effect, whereas a mixed entrainer of triethylene glycol and dimethyl phthalate shows little synergistic effect. The most selective mixed entrainer was a mixture of 50 vol % of sulfolane and 50 vol % of dimethyl phthalate, the relative volatility of isoparaffins to naphthenes reached 1.835. Results from the experiment in an extractive distillation column show that isoparaffins concentration of more than 95 wt % in the isoparaffins product and naphthenes concentration of more than 94 wt % in the naphthenes product are achieved.Sinopec Jinling Petrochemical Compan

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“…N-(β-mercaptoehtyl)-2-pyrrolidone (NMEP), cyclohexanol (CHOL), N-methyl-pyrrolidone (NMP), or a mixture of NMEP and either CHOL or NMP, phenol and NMP+5% water [6], [7]. Among these solvents, mixed solvent tends to be more effective than single solvent, since single solvent cannot have high selectivity and solubility simultaneously.…”

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confidence: 99%

Solvent Screening for Cyclopentane Purification Based on COSMO

Wu¹,

Pu²,

Liu³

2017

IJCEA

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Abstract-Separation of cyclopentane has an important significance in environmental protection and resource utilization. This work is intended to serve as a rapid way to screen mixed solvent for extractive distillation of cyclopentane using the COSMO-RS method. IDACs and VLE data of different binary systems were compared with computational results. Then the performance of mixed solvent was studied by the COSMO-RS method, including the influences of the solvent-to-feed ratio and the basic solvent and cosolvent ratio on the relative volatility. Finally, the mixed solvent was validated to be effective by the experiments.

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Effect of Solvents for the Production of Cyclopentane by Extractive Distillation

Cited by 5 publications

References 3 publications

Kinetic Molecular Sieving of Cyclopentane/Neohexane Mixtures by the MFI Zeolite with Intersecting 10-Ring Channels

Kinetic Molecular Sieving of Cyclopentane/Neohexane Mixtures by the MFI Zeolite with Intersecting 10-Ring Channels

Entrainer Screening for Separation of Isoparaffins and Naphthenes by Extractive Distillation

Solvent Screening for Cyclopentane Purification Based on COSMO

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