scholarly journals Thermodynamic Insights on the Feasibility of Homogeneous Batch Extractive Distillation. 4. Azeotropic Mixtures with Intermediate Boiling Entrainer

2012 ◽  
Vol 51 (18) ◽  
pp. 6489-6501 ◽  
Author(s):  
Ivonne Rodriguez-Donis ◽  
Vincent Gerbaud ◽  
Xavier Joulia
Keyword(s):  
Extractive Distillation ◽  
Azeotropic Mixtures

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

scholarly journals Effect of ionic liquids as entrainers on the dynamic behavior of ethanol-water extractive columns

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Nelly Ramírez-Corona ◽  
Andrés Schramm-Flores ◽  
Sofía Reyes-Lombardo ◽  
Arturo Jiménez-Gutiérrez
Keyword(s):  
Ionic Liquids ◽  
Extractive Distillation ◽  
Dynamic Responses ◽  
Dehydration Process ◽  
Ethanol Dehydration ◽  
Feed Mixture ◽  
Industrial Implementation ◽  
Lack Of Information ◽  
Azeotropic Mixtures ◽  
Product Stream

AbstractIonic liquids (ILs) have been recently considered as potential entrainers for extractive distillation. The use of ILs may affect the vapor-liquid properties to aid the separation of azeotropic mixtures. In particular, their effectiveness has been observed for ethanol dehydration, showing promising perspectives for their industrial implementation. However, there is still a lack of information about the effect of ILs on the system controllability. The objective of this work is to explore the dynamic implications of the use of two types of ionic liquids on the ethanol dehydration process. An equimolar feed mixture of ethanol and water was considered, and different IL concentrations were tested. The results show that changing the IL concentration affect the degree of stabilization of the product stream, even when smooth dynamic responses were in many cases observed.

scholarly journals Alcohol Dehydration by Extractive Distillation with Use of Aminoethers of Boric Acid

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1466
Author(s):  
Alexander V. Klinov ◽  
Alexander V. Malygin ◽  
Alina R. Khairullina ◽  
Sergey E. Dulmaev ◽  
Ilsiya M. Davletbaeva
Keyword(s):  
Boric Acid ◽  
Extractive Distillation ◽  
Residual Water ◽  
Water Mixture ◽  
Alcohol Dehydration ◽  
Alcohol Group ◽  
Unifac Model ◽  
Azeotropic Mixtures ◽  
The Cost ◽  
Rectification Process

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 isopropanol in the presence of AEBA were studied. The division of AEBA molecules into group components was proposed, and previously unknown geometric parameters of the boron group and the energetic pair parameters of the boron group with the alkane group, ether group, amine-3d group, and alcohol group were determined within the framework of the Universal Functional Group Activity Coefficient (UNIFAC) model. The modeling of the extractive rectification process of an ethanol–water mixture with AEBA as extractant has been carried out. The dependences of the cost function on the extractant flow rate, the residual water content in it and the number of theoretical trays were obtained. A technological scheme for ethanol dehydration has been proposed, and its technological characteristics have been calculated.

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