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

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.

A review of sodium chloride-based electrolytes and materials for electrochemical energy technology

“…241 The development of high-efficiency and low energy-consumption desalination technology has been recognized as an effective strategy for solving the freshwater crisis. 241 At present, the large-scale desalination technologies 242 include multi-effect distillation, [243][244][245] multi-stage ash distillation, [246][247][248] mechanical vapor compression, [249][250][251] reverse osmosis desalination, [252][253][254] forward osmosis desalination, [255][256][257] membrane distillation [258][259][260] and ion-exchange membrane desalination. [261][262][263] These methods mainly rely on physical techniques to achieve desalination but all of them require either high energy consumption operation conditions or expensive permeable membranes.…”

A Review of Battery Materials as CDI Electrodes for Desalination

“…Obtaining a safe and simple method of desalination of saline water with low cost, high efficiency and high recovery has always been the focus of scientists. Several desalination techniques have already been scaled up: multi-effect distillation [16][17][18], multi-stage flash distillation [19][20][21], mechanical vapor compression [22][23][24], reverse osmosis desalination [25][26][27], forward osmosis desalination [28][29][30], membrane distillation [31][32][33] and ion-exchange membrane desalination [34][35][36]. These methods require either strict high energy-consuming operation conditions or expensive membrane cost.…”

Modelling ultrasound waves bubble formation in ethanol/ethyl acetate azeotrope mixture

“…The formation of bubbles in liquid when subjected to ultrasound wave is an important application in the field of sonochemistry. The practical application of sonochemistry process includes and not limited to chemical reaction [1], ultrasonic cleaning [2], and process intensification [3,4], such as separation of an azeotropic mixture [5,6]. Mahdi et al [7] worked on the intensification of distillation process for the separation of ethanol/ethyl acetate azeotropic mixture using ultrasound wave.…”