Liquid densities of acetone and n-heptane and excess volumes of the binary system in a wide temperature and pressure range

Berje, Jürgen; Schedemann, Andre; Gmehling, Jürgen

doi:10.1016/j.fluid.2010.10.028

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…Acetone (ACT) and n -heptane (HEP) are essential chemicals used in the pharmaceutical industries as safe solvents for organic synthesis. , These two compounds can also be present in various industrial wastewaters. − If wastewater is discharged directly, it would boost the total annual cost and pollute the environment. As a result, separating the mixture of these two substances is crucial and attractive.…”

Section: Introductionmentioning

confidence: 99%

The Design and Optimization of Extractive Distillation for Separating the Acetone/n-Heptane Binary Azeotrope Mixture

Kianinia

Abdoli

2021

ACS Omega

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Acetone and n -heptane are common solvents in the pharmaceutical industry and they have been found in wastewater. Under atmospheric conditions, the mixture of these compounds creates a minimum-boiling azeotrope. The extractive distillation process with a high boiling solvent is commonly utilized to separate the azeotropes in the industry to minimize waste, reuse resources, achieve clean production, and preserve the environment. In this work, extractive distillation was applied to separate the binary azeotropic system of acetone and n -heptane in wastewater using butyl propionate as a solvent. The characteristics of the process are designed and simulated via Aspen Plus. The simulation results showed that to get a distillate containing at least 99.5 mass% acetone, a solvent-to-feed ratio of 1.4, a reflux ratio of 1.5, a number of stages of 30, a feed stage of 26, a solvent stage of 10, and a solvent temperature of 298.15 K were required. The optimum operating parameters of the process were also obtained using the NLP optimization method, with the minimum total annual cost as the objective function. While the process was operating in optimal mode, CO 2 emissions were calculated to be 0.0780 kg CO 2 /kg feed.

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Section: Introductionmentioning

confidence: 99%

The Design and Optimization of Extractive Distillation for Separating the Acetone/n-Heptane Binary Azeotrope Mixture

Kianinia

Abdoli

2021

ACS Omega

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“…Acetone and n -heptane are widely used as excellent solvents and raw materials for organic synthesis in the chemical and pharmaceutical industries. − The acetone and n -heptane mixture are observed in many industrial waste waters. − The separation of organic mixtures is an important subject in the chemical industry. Because of the azeotropic phenomenon, there exists a certain kind of difficulty to recovery high purity product from n -heptane–acetone mixtures.…”

Section: Introductionmentioning

confidence: 99%

Liquid Liquid Equilibrium Data for the Separation of Acetone from n-Heptane Using Four Imidazolium-Based Ionic Liquids

Zhu

Bai

et al. 2019

J. Chem. Eng. Data

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Ionic liquids (ILs) can serve as green alternative extractants to traditional solvents for the sustainable development of liquid–liquid extraction. Liquid–liquid equilibrium data for four systems of n-heptane + acetone + 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM][OTF]), n-heptane + acetone + 1-hexyl-3-methylimidazolium trifluoromethanesulfonate ([HMIM][OTF]), n-heptane + acetone + 1-butyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide ([BMIM][NTf2]), and n-heptane + acetone + 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) were tested at T = 298.15 K and P = 101.325 kPa in this work. By comparing the values of the distribution coefficients and separation factors, the experimental results showed that the order of extraction capacity of ILs as extraction solvent was [BMIM][OTF] > [BMIM][PF6] > [BMIM][NTf2] and [BMIM][OTF] > [HMIM][OTF]. Finally, the experimental data were regressed with the NRTL and UNIQUAC models, and the binary interaction parameters were obtained.

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“…The densities of pure compounds − and binary ,,− and ternary mixtures have been investigated by many researchers who use piezometer devices, vibrating tube densitometers, , or a rapid-heating sealed-ampule technique. − For the multicomponent hydrocarbon mixture, a measurement based on the mass conservation equation was developed at sub- and supercritical conditions. Although the fore-mentioned densitometers are the popular methods for density measurement, the density data were studied at low temperature and different pressures.…”

Section: Introductionmentioning

confidence: 99%

Design of a Gamma Densitometer for Hydrocarbon Fuel at High Temperature and Supercritical Pressure

Yang

Guo

et al. 2014

J. Chem. Eng. Data

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The densities of endothermic hydrocarbon fuel at supercritical pressure condition are measured online using a radial measurement method. The densitometer is based on the attenuation theory of gamma ray using a count rate mode. One advantage of the method is that it is noninstrusive and practical for a small tube measurement. The densitometer was measurably optimized for the design and calibrated by the reference fluids with different density ranges. A kind of endothermic hydrocarbon fuel was measured covering the temperature from (283 to 950) K at the supercritical pressures of (3.0 and 4.0) MPa. The data were regressed with polynomial equations and the isobaric thermal expansion could be obtained by the fitted density curve.

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Liquid densities of acetone and n-heptane and excess volumes of the binary system in a wide temperature and pressure range

Cited by 9 publications

References 6 publications

The Design and Optimization of Extractive Distillation for Separating the Acetone/n-Heptane Binary Azeotrope Mixture

The Design and Optimization of Extractive Distillation for Separating the Acetone/n-Heptane Binary Azeotrope Mixture

Liquid Liquid Equilibrium Data for the Separation of Acetone from n-Heptane Using Four Imidazolium-Based Ionic Liquids

Design of a Gamma Densitometer for Hydrocarbon Fuel at High Temperature and Supercritical Pressure

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