Eco-efficient heat-integrated extractive distillation process using ionic liquid as entrainer for ethyl acetate-isopropyl alcohol-water mixture

2022 ◽  
pp. 120491
Author(s):  
Zhishan Zhang ◽  
Xiaoxiao Zhao ◽  
Yun Wang ◽  
Yixin Ma ◽  
Guijie Li
Keyword(s):  
Ionic Liquid ◽  
Ethyl Acetate ◽  
Isopropyl Alcohol ◽  
Extractive Distillation ◽  
Water Mixture ◽  
Distillation Process ◽  
Alcohol Water

Vapor-Liquid Equilibria for the Ternary System Ethyl Acetate-Acetonitrile-1-Octyl-3-Methylimidazolium Tetrafluoroborate

2013 ◽  
Vol 791-793 ◽  
pp. 141-144
Author(s):  
Xiu Min Shi ◽  
Min Wang
Keyword(s):  
Ionic Liquid ◽  
Ternary System ◽  
Ethyl Acetate ◽  
Mole Fraction ◽  
Salt Effect ◽  
Extractive Distillation ◽  
Relative Volatility ◽  
Azeotropic Point ◽  
Vapor Liquid Equilibria ◽  
Vapor Liquid

In order to research the possibility of separating the azeotrope of ethyl acetate + acetonitrile with ionic liquid as the extractant. Isobaric vapor-liquid equilibria for the ternary system ethyl acetate + acetonitrile + 1-octyl-3-methylimidazolium tetrafluoroborate ([OMIBF4) were measured at 101.32 kPa using a recirculation still. The results showed that the VLE of the ternary system was different from that of the binary system. The ionic liquid (IL) studied showed a slight crossover salt effect, which changed the relative volatility of ethyl acetate to acetonitrile and eliminated the azeotropic point when the mole fraction of IL in the liquid phase was greater than 0.05. Therefore, [OMIBF4 can be used as the extractant of extractive distillation for ethyl acetate + acetonitrile system, the suitable mole fraction of [OMIBF4 is about 10%.

scholarly journals Synthesis of tetraalkyl thiuram disulfides using different oxidants in recycling solvent mixture

2012 ◽  
Vol 18 (1) ◽  
pp. 73-81 ◽  
Author(s):  
Milutin Milosavljevic ◽  
Aleksandar Marinkovic ◽  
Jelena Markovic ◽  
Danijela Brkovic ◽  
Milan Milosavljevic
Keyword(s):  
Isopropyl Alcohol ◽  
Level Structure ◽  
Reaction Medium ◽  
Solvent Mixture ◽  
Azeotropic Mixture ◽  
Water Mixture ◽  
Alcohol Water ◽  
High Yields ◽  
Industrial Level ◽  
Laboratory Synthesis

A new optimized laboratory synthesis of tetraalkyl thiuram disulfides, starting from dialkyl amines and carbon disulfide in presence of three oxidants (hydrogen peroxide, potassium peroxodisulfate and sodium hypochlorite) and appropriate reaction medium: two mixtures of isopropyl alcohol - water used in two consecutive syntheses, was presented in this work. First synthesis was performed in a recycled azeotropic mixture of isopropyl alcohol - water 87.7% - 12.3%, and second in a filtrate obtained after first synthesis, which was a mixture of isopropyl alcohol - water 70.4% - 29.6%. After the second synthesis and filtration, recycled azeotropic mixture isopropyl alcohol - water 87.7% - 12.3% was regenerated from the filtrate by rectification. Considering this, the technology for beneficial use of recycling isopropyl alcohol - water mixture as reaction medium for tetraalkyl thiuram disulfides synthesis was developed. Such concept contributes to extraordinary economical benefit of implemented optimal laboratory synthesis at semi-industrial level. High yields of tetraalkyl thiuram disulfides syntheses were obtained at both laboratory and semiindustrial level. Structure and purity of synthesized compounds were confirmed by elemental analysis, as well as FTIR, 1H and 13C NMR, and MS spectral data.

scholarly journals Simulasi CHEMCAD: Studi Kasus Distilasi Ekstraktif pada Campuran Terner n-Propil Asetat/n-Propanol/Air

2018 ◽  
Vol 2 (2) ◽  
pp. 75 ◽  
Author(s):  
Agung Ari Wibowo ◽  
Cucuk Evi Lusiani ◽  
Rizqy Romadhona Ginting ◽  
Dhoni Hartanto
Keyword(s):  
Extractive Distillation ◽  
Water Mixture ◽  
Distillation Process ◽  
Propyl Acetate ◽  
Extractive Agent ◽  
Simple Distillation ◽  
Simulation Process ◽  
Ternary Azeotrope ◽  
Vaporization Process ◽  
Separating Agent

Pemisahan n-propil asetat dari campuran terner n-propil asetat/n-propanol/air merupakan salah satu proses yang tidak dapat dilakukan dengan distilasi sederhana. Adanya azeotrop terner minimum dari campuran tersebut menyebabkan n-propil asetat hanya dapat dipisahkan dari campuran n-propanol dan air salah satunya dengan metode distilasi ekstraktif. Distilasi ekstraktif merupakan proses vaporisasi parsial dengan menambahkan suatu agen pemisah non-volatil yang disebut sebagai sovent atau agen ekstraktif. Solvent yang digunakan dalam simulasi proses ini adalah campuran DMSO (Dimetil Sulfoksida) dan Gliserol dengan komposisi 50 % massa dengan perbandingan 1:2 untuk massa umpan kolom : solvent. Feed yang digunakan adalah n-propanol (10 kmol/jam) dan asam asetat (13 kmol/jam) masing-masing pada suhu 25°C dan tekanan 101,3 kPa. Hasil n-propil asetat terbaik diperoleh saat solvent diumpankan pada stage 5 dengan fraksi mol n-propil asetat pada distilat 0,9975 disertai dengan minimumnya energi reboiler yang digunakan pada konfigurasi kolom ini.n-Propyl acetate separation of the n-propyl acetate /n-propanol/water mixture composition can't be done by simple distillation. The existence of minimum ternary azeotrope on the mixture causes n-propyl acetate can be separated only by extractive distillation method. Extractive distillation is a partial vaporization process in the presence of a non-volatile separating agent called as solvent or extractive agent. Solvent used in the simulation process is DMSO (Dimethyl Sulfoxide)-Glycerol mixture (50% mass) with a ratio of 1: 2 for column feed : solvent. n-Propanol (10 kmol/hour) and acetic acid (13 kmol/hour) are fed into reactor (before extractive distillation process) at 25°C and 101.3 kPa, respectively. The best results of n-propyl acetate were obtained when the solvent was fed to stage 5 in which mole fraction of n-propyl acetate in distillate 0.9975 accompanied by the minimum reboiler energy used in this column configuration.

scholarly journals Computer-aided ionic liquid design for alkane/cycloalkane extractive distillation process

2019 ◽  
Vol 4 (2) ◽  
pp. 154-165 ◽  
Author(s):  
Zhen Song ◽  
Xinxin Li ◽  
He Chao ◽  
Fan Mo ◽  
Teng Zhou ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Extractive Distillation ◽  
Distillation Process ◽  
Computer Aided

Organic Solvents for Separating Ethyl Acetate-Ethanol by Extractive Distillation

2012 ◽  
Vol 550-553 ◽  
pp. 699-703
Author(s):  
Zhi Gang Zhang ◽  
Ming Lv ◽  
Li Feng Chen ◽  
Wen Xiu Li
Keyword(s):  
Ethyl Acetate ◽  
Organic Solvents ◽  
Mixed Solvent ◽  
Extractive Distillation ◽  
Measured Data ◽  
Azeotropic Mixture ◽  
Distillation Process ◽  
Influence Of Temperature ◽  
Unifac Model ◽  
Influence Of Temperature On

The azeotropic mixture ethyl acetate-ethanol (EA-EtOH) enables effective separation by extractive distillation. The effectiveness of an extractive distillation process depends on the solvent selection, so the single and mixed solvent for separating ethyl acetate-ethanol by extractive distillation were examined. The results showed that the volatility of the ethyl acetate relative to ethanol increased with an increase of the ratio of any given solvent. The selectivity of the mixed solvent is superior to the single solvent. The measured data were correlated well using modified UNIFAC model. Simultaneously, the influence of temperature on solvent selectivity was proposed by using the Clausius-Mosotti equation.

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