Intensification and analysis of extractive distillation processes with preconcentration for separating ethyl acetate, isopropanol and water azeotropic mixtures

2022 ◽  
pp. 120499
Author(s):  
Xue Jian ◽  
Jinlong Li ◽  
Qing Ye ◽  
Lingqiang Yan ◽  
Xinhao Li ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Extractive Distillation ◽  
Azeotropic Mixtures

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%.

Extractive distillation of binary azeotropic mixtures

2008 ◽  
Vol 42 (5) ◽  
pp. 507-516 ◽  
Author(s):  
L. A. Serafimov ◽  
A. K. Frolkova ◽  
D. I. Bushina
Keyword(s):  
Extractive Distillation ◽  
Azeotropic Mixtures

Synthesis of flowsheets for extractive distillation of azeotropic mixtures

2005 ◽  
Vol 39 (1) ◽  
pp. 16-23 ◽  
Author(s):  
L. V. Ivanova ◽  
A. V. Timoshenko ◽  
V. S. Timofeev
Keyword(s):  
Extractive Distillation ◽  
Azeotropic Mixtures

Separation of Azeotropic Mixture Using Multi-stage Ultrasound-Assisted Flash Distillation

2015 ◽  
Vol 10 (4) ◽  
pp. 237-242 ◽  
Author(s):  
Taha Mahdi ◽  
Arshad Ahmad ◽  
Adnan Ripin ◽  
Mohamed Mahmud Nasef
Keyword(s):  
Ethyl Acetate ◽  
Azeotropic Mixture ◽  
Separation Unit ◽  
Multi Stage ◽  
Azeotropic Mixtures ◽  
In Series ◽  
Flash Distillation ◽  
Ultrasound Assisted ◽  
Aspen Custom Modeler

Abstract A mathematical model for an ultrasound-assisted vapor liquid equilibrium (VLE) system developed in Aspen Custom Modeler is exported to Aspen Plus flowsheeting environment to form a block in the software library to represent a single stage flash separation unit. The block is then arranged in series to mimic an ultrasonically intensified distillation process. As a case study, an ethanol/ethyl acetate separation process is examined. The results show that a 99 mol% ethyl acetate recovery is established when a series of 27 flash VLE devices are used. The system is also evaluated for other minimum boiling azeotropic mixtures, and consistent results are obtained, thus revealing the potentials of ultrasound-assisted system as an alternative strategy for azeotropic mixture separations.

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