Azeotropic distillation ≈ Azeotropic distillation
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Design and control of pressure‐swing distillation for separating ternary systems with three binary minimum azeotropes Open
The separation of ternary nonideal systems with multi‐azeotrope is very important because they are often found in the waste of chemical and pharmaceutical industries, which is much more difficult due to the formation of multi‐azeotrope and…
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Systematic design of an extractive distillation for maximum‐boiling azeotropes with heavy entrainers Open
Extractive distillation is one of the most attractive approaches for separating azeotropic mixtures. Few contributions have been reported to design an extractive distillation for separating maximum‐boiling azeotropes and no systematic appr…
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Upgrading Fast Pyrolysis Bio-Oil Quality by Esterification and Azeotropic Water Removal Open
Fast pyrolysis bio-oil has unfavorable properties that restrict its use in many applications. Among the main issues are high acidity, instability, and water and oxygen content, which give rise to corrosiveness, polymerization during storag…
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Bioethanol dehydration and mixing by heterogeneous azeotropic distillation Open
Bioethanol is mixed with gasoline according to many countries' legislation pursuing environmental sustainability by reducing the use of fossil fuels. Bioethanol is produced by fermentation of many organic waste or biomass resources in dilu…
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Deep eutectic solvents as entrainers in extractive distillation – A review Open
One of the most common techniques for separating azeotropes and close-boiling mixtures is extractive distillation, where the relative volatility of the components to be separated is altered by adding an entrainer. In recent years, deep eut…
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Recent progress on hybrid reactive-extractive distillation for azeotropic separation: A short review Open
The reactive-extractive distillation (RED) has the advantages of combining the beneficial features of both reaction and separation processes. Relative to the conventional reactive or extractive distillation-based processes, the RED is also…
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Energy-efficient heterogeneous triple-column azeotropic distillation process for recovery of ethyl acetate and methanol from wastewater Open
• A novel heterogeneous triple-column distillation (NHTCD) without solvent injection. • Simplification of previously established extractive distillation (ED) process. • Enhanced with heat integration (HI) and heat pump-vapor recompression …
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Separation of the Mixture 2-Propanol + Water by Heterogeneous Azeotropic Distillation with Isooctane as an Entrainer Open
Advanced processes, which are alternatives to ordinary distillation, are essential to dehydrate azeotropic alcoholic mixtures for biofuel production. In that regard, this work focuses on the analysis of heterogeneous azeotropic distillatio…
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Pressure swing distillation of azeotropic mixture – A simulation study Open
The aim of this work is to simulate a pressure-swing distillation column for the separation and purification of ethanol from the ethanol–water binary system. The choice for this system is due to the importance of the ethanol–water separati…
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Glycerol transesterification with ethyl acetate to synthesize acetins using ethyl acetate as reactant and entrainer Open
Transesterification of glycerol with ethyl acetate was performed over acidic catalysts in the batch and semi-batch systems. Ethyl acetate was used as reactant and entrainer to remove the produced ethanol during the reaction, through azeotr…
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Design and Control Applied to an Extractive Distillation Column with Salt for the Production of Bioethanol Open
Extractive distillation with salts, unlike other dehydration technologies, is better due to the null toxicity that exists in the distillate, since salt cannot be evaporated. With this distillation technology, it is possible to obtain a hig…
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Separation of azeotropic mixtures using air microbubbles generated by fluidic oscillation Open
The feasibility of separating the azeotropic mixture of ethanol‐water using microbubble‐mediated batch distillation is presented. The effects of the depth of the liquid mixture in the bubble tank and of the inlet air microbubble temperatur…
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Separation of Alcohol-Water Mixtures by a Combination of Distillation, Hydrophilic and Organophilic Pervaporation Processes Open
It can be stated that in the fine chemical industries, especially in the pharmaceutical industry, large amounts of liquid waste and industrial waste solvents are generated during the production technology. Addressing these is a key issue b…
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The Design and Optimization of Extractive Distillation for Separating the Acetone/<i>n</i>-Heptane Binary Azeotrope Mixture Open
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 …
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A review of ternary azeotropic mixtures advanced separation strategies Open
In most multi-component systems, the predominant non-ideality occurs which lead to the occurrence of an azeotrope. The ternary systems classification and study are summarized in first part of this review. The next part covers thermodynamic…
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Impact of distillation temperature on the solvent residue and viscoelastic properties of asphalt binders Open
Asphalt used as a paving material is a mix of aggregates and bituminous binder. Due to reasons of acceptance tests after paving or for fault analysis, it is necessary to separate asphalt mixes into their components. Therefore, different or…
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Separation of the Azeotropic Mixture Methanol and Toluene Using Extractive Distillation: Entrainer Determination, Vapor–Liquid Equilibrium Measurement, and Modeling Open
For separating the azeotropic mixture methanol and toluene, an extractive distillation is applied with butyl propanoate, triethylamine, and butyl butanoate as the extractive solvents, which were screened by relative volatility, selectivity…
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Comparison of Conventional Extractive Distillation and Heat Integrated Extractive Distillation for Separating Tetrahydrofuran/Ethanol/Water Open
The distillation is one of the most energy-intensive unit operations in the chemical and pharmaceutical processes. As to the separation of azeotropic mixtures, energy consumption is even more critical. Extractive distillation is an importa…
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Dehydration of IPA-H2O mixture: Review of fundamentals and proposal of novel energy-efficient separation schemes Open
According to the ongoing regulations, the need to identify green and economical production roots for fuels is of paramount importance. Unfortunately, biofuels production is often accompanied with the for-mation of water, that needs to be r…
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Bioethanol separation by a new pass-through distillation process Open
Distillation is the most used separation technology at industrial-scale, but using distillation in bio-based processes (e.g. fermentation processes to produce bioethanol) is quite challenging when mild temperatures are needed to keep the m…
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Separation of Process Wastewater with Extractive Heterogeneous-Azeotropic Distillation Open
The application of vapour-liquid equilibria-based separation alternatives can be extraordinarily complicated for the treatment of process wastewaters containing heterogeneous-azeotropic. Despite dissimilar successfully tested methods for s…
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Design and Control of Extractive Dividing Wall Column for Separating Dipropyl Ether/1-Propyl Alcohol Mixture Open
The focus of this work is the study of the extractive dividing wall column (EDWC) for separating the azeotropic mixture of dipropyl ether and 1-propyl alcohol with N, N-dimethylacetamide (DMAC) as the entrainer. Three separation sequences …
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Recovery Of Acetonitrile From Aqueous Solutions By Extractive Distillation–Effect Of Entrainer Open
The aim of this work was to apply extractive distillation for acetonitrile removal from water solutions, to validate thermodynamic criterion based on excess Gibbs energy to entrainer selection process for acetonitrile – water mixture separ…
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Isopropyl Alcohol Purification through Extractive Distillation using Glycerol as an Entrainer: Technical Performances Simulation and Design Open
Isopropyl alcohol is widely used as industrial chemical intermediates and common solvents in households, pharmaceuticals, food, cosmetics, and medical purposes. The high purity of isopropyl alcohol requires special separation from its impu…
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Comparison of extractive distillation flowsheets for methanol–tetrahydrofuran–water mixtures Open
Objectives . Synthesis and comparative analysis of the extractive distillation flowsheets for aqueous mixtures of solvents utilized in pharmaceutical industries using the example of a methanol−tetrahydrofuran−water system with various comp…
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Separation and Purification of Methyl Isobutyl Ketone from Acetone + Isopropanol + Water + Methyl Isobutyl Ketone + Methyl Isobutyl Carbinol + Diisobutyl Ketone Mixture Open
The paper presents the results of the study of phase equilibrium in the system containing acetone, isopropanol, water, methyl isobutyl ketone, methyl isobutyl carbinol, and diisobutyl ketone. Mathematical modeling in AspenPlus V.10.0 was c…
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Thermodynamic Assessment of the Suitability of the Limiting Selectivity to Screen Ionic Liquid Entrainers for Homogeneous Extractive Distillation Processes Open
As a result of their high tuneability and low volatility, room temperature ionic liquids have been proposed as replacement solvents in a wide range of industrial applications. They are particularly well-suited for use as an entrainer (or s…
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Alcohol Dehydration by Extractive Distillation with Use of Aminoethers of Boric Acid Open
Aminoethers of boric acid (AEBA) were studied as potential extractants for the separation of aqueous–alcoholic azeotropic mixtures by extractive distillation. The conditions of vapor–liquid equilibrium in aqueous solutions of ethanol and i…
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Azeotrope formation in gasoline–ethanol blends. Part 1 – Impact of nonionic on E10 distillation curve Open
Blending 10 vol% of ethanol into hydrocarbon base gasoline (HBG) increases significantly the vapour pressure of the blend (E10), and exhibits near-azeotrope behaviour that severely affects the shape of E10 distillation curve. The distillat…
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Single- and multi-objective optimisation of hybrid distillation-pervaporation and dividing wall column structures Open
The separation of azeotropic mixtures is often energy intensive, thus process intensification (PI) becomes an attractive route to enhance energy efficiency. Two of the most commonly used separation intensifications are dividing wall column…