Investigation of an energy-saving double-thermally coupled extractive distillation for separating ternary system benzene/toluene/cyclohexane

Energy ◽  
2019 ◽  
Vol 186 ◽  
pp. 115756 ◽  
Author(s):  
Ao Yang ◽  
Yang Su ◽  
I-Lung Chien ◽  
Saimeng Jin ◽  
Chenglei Yan ◽  
...  
Keyword(s):  
Ternary System ◽  
Energy Saving ◽  
Extractive Distillation ◽  
Benzene Toluene

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%.

Energy-Saving Characteristics of Benzene-Toluene Mixtures in Heat Pump Distillation Column

2012 ◽  
Vol 455-456 ◽  
pp. 630-634
Author(s):  
Zheng Ming Tong ◽  
Chao Li ◽  
Jia Lei Lu ◽  
Kai Zhu
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Distillation Column ◽  
Energy Savings ◽  
Operating Conditions ◽  
Material System ◽  
Industrial Energy ◽  
Energy Consuming ◽  
Benzene Toluene ◽  
Consuming Country

China is a big industrial energy consuming country. The largest proportion of energy consuming is the operations of separation in chemical industry, and the energy consumption of the distillation is the highest in separation. Therefore, it is very important to research energy-saving issues of the process of distillation in today's circumstances of the energy shortage. This article describes the model of heat pump distillation column,and its characteristics, uses static simulation programs to simulate operating conditions in the atmospheric pressure for the benzene-toluene material system, and studys effects of the different feed states on the energy-saving of heat pump distillation column. The results will be compared with the conventional distillation column, and it was showed that for benzene-toluene system, the heat pump distillation column is more remarkable than the conventional distillation column in energy savings, and its energy saving rate can reach 46%.

Dynamic controllability investigation of an energy-saving double side-stream ternary extractive distillation process

2019 ◽  
Vol 225 ◽  
pp. 41-53 ◽  
Author(s):  
Ao Yang ◽  
Tao Shi ◽  
Shirui Sun ◽  
Shun'an Wei ◽  
Weifeng Shen ◽  
...  
Keyword(s):  
Energy Saving ◽  
Extractive Distillation ◽  
Distillation Process ◽  
Side Stream

scholarly journals Bio-based solvents as entrainers for extractive distillation in aromatic/aliphatic and olefin/paraffin separation

2020 ◽  
Vol 22 (16) ◽  
pp. 5369-5375 ◽  
Author(s):  
Thomas Brouwer ◽  
Boelo Schuur
Keyword(s):  
Energy Saving ◽  
Extractive Distillation

A series of bio-based solvents were studied for application as entrainers in extractive distillation with Cyrene™, and compared to sulfolane, 30% energy saving was found for methylcyclohexene distillation from toluene.

Economic evaluation of energy saving alternatives in extractive distillation process

2016 ◽  
Vol 93 ◽  
pp. 185-196 ◽  
Author(s):  
K.D. Brito ◽  
G.M. Cordeiro ◽  
M.F. Figueirêdo ◽  
L.G.S. Vasconcelos ◽  
R.P. Brito
Keyword(s):  
Economic Evaluation ◽  
Energy Saving ◽  
Extractive Distillation ◽  
Distillation Process
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