scholarly journals Study of Novel Separation Technique 'Pervaporation' for Separation of Acetronitrile and Tetrahydrofuran from waste Stream

2021 ◽  
pp. 698-703
Author(s):  
Isha Meshram
Keyword(s):  
Boiling Point ◽  
Energy Efficient ◽  
Liquid Mixtures ◽  
Separation Technique ◽  
Waste Stream ◽  
Operating Parameters ◽  
Membrane Process ◽  
Distillation Columns ◽  
Solvent Water ◽  
Water Waste

Pervaporation is a very effective membrane process for the separation of liquid mixtures. Due to its economics, efficiency and simplicity, it can easily be integrated into the distillation and rectification processes and, depending on the specific operating parameters, even partially replace them. Pervaporation technology can effectively recovery acetonitrile from the waste stream and separate a tetrahydrofuran (THF) solvent-water waste stream. Pervaporation technique was used for the mixture of close boiling point and to break the azeotrope in the most economical way. The combination of Distillation columns and pervaporation unit were used for recovery of acetoniritle which was not TDS process and was economically feasible for larger stream. This technique used is economical and energy efficient for the separation.

scholarly journals To the issue of energy efficiency of using frequency-controlled centrifugal pump units

2018 ◽  
Vol 170 ◽  
pp. 03017 ◽  
Author(s):  
Alexey Dmitriev ◽  
Vyacheslav Gerasimov
Keyword(s):  
Control Systems ◽  
Centrifugal Pump ◽  
Energy Efficient ◽  
Point Of View ◽  
Operating Parameters ◽  
Variable Frequency Drive ◽  
Automatic Control Systems ◽  
Efficient Management ◽  
Pumping Stations ◽  
Pumping Units

The expediency of using a variable frequency drive for pumping units was repeatedly proved both from the point of view of the economic component and the technological one. However, the construction of automatic control systems for the operating parameters of pumping stations is mainly based on maintaining the pressure setpoint and does not include monitoring the efficiency of the aggregates working in the group and, the more so, its regulation. In this paper, an algorithm is developed for the energy efficient management of centrifugal pump units, which allows not only maintaining the pressure setpoint, but also optimizing their efficiency.

scholarly journals LIQUID MIXTURES OF MINIMUM BOILING-POINT.

1905 ◽  
Vol 27 (9) ◽  
pp. 1049-1057 ◽  
Author(s):  
C. D. Holley ◽  
J. T. Weaver
Keyword(s):  
Boiling Point ◽  
Liquid Mixtures

scholarly journals The influence of selected parameters on the efficiency and economic charactersistics of the oxy-type coal unit with a membrane-cryogenic oxygen separator

2016 ◽  
Vol 37 (1) ◽  
pp. 73-85
Author(s):  
Janusz Kotowicz ◽  
Sylwia Berdowska
Keyword(s):  
Economic Analysis ◽  
Carbon Capture ◽  
Main Parameter ◽  
Selectivity Coefficient ◽  
Separation Method ◽  
Membrane Process ◽  
Physical Separation ◽  
Distillation Columns ◽  
Break Even Point ◽  
Cryogenic Distillation

AbstractIn this paper a 600 MW oxy-type coal unit with a pulverized bed boiler and a membrane-cryogenic oxygen separator and carbon capture installation was analyzed. A membrane-cryogenic oxygen separation installation consists of a membrane module and two cryogenic distillation columns. In this system oxygen is produced with the purity equal to 95%. Installation of carbon capture was based on the physical separation method and allows to reduce the CO2emission by 90%. In this work the influence of the main parameter of the membrane process – the selectivity coefficient, on the efficiency of the coal unit was presented. The economic analysis with the use of the break-even point method was carried out. The economic calculations were realized in view of the break-even price of electricity depending on a coal unit availability.

ENERGY EFFICIENT DISTILLATION COLUMNS ANALYSIS FOR AN AROMATIC SEPARATION PROCESS

2016 ◽  
Vol 78 (3-2) ◽  
Author(s):  
Muhammad Zakwan Zaine ◽  
Mohd. Faris Mustafa ◽  
Onn Hassan ◽  
Kamarul Asri Ibrahim ◽  
Norazana Ibrahim ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Driving Force ◽  
Energy Savings ◽  
Energy Analysis ◽  
Optimal Sequence ◽  
Separation Unit ◽  
Distillation Columns ◽  
Improve Energy Efficiency ◽  
Force Method

Energy savings is a major challenge in distillation operations. However, there is still one problem, which is how do we improve the energy efficiency of the existing distillation column systems without major modifications. Recently, a new energy efficient distillation columns methodology that will be able to improve energy efficiency of the existing separation systems without having major modifications has been developed. Therefore, the objective of this paper is to present a new improvement of the existing methodology by designing an optimal sequence of energy efficient distillation columns using a driving force method. Accordingly, the methodology is divided into four hierarchical sequential stages: i) existing sequence energy analysis, ii) optimal sequence determination, iii) optimal sequence energy analysis, and iv) energy comparison and economic analysis. The capability of this methodology is tested in designing an optimal synthesis of energy efficient distillation columns sequence of an aromatics separation unit. The existing aromatics separation unit consists of six compounds (Methylcyclopentane (MCP), Benzene, Methylcyclohexane (MCH), Toluene, m-Xylene and o-Xylene) with five direct sequence distillation columns being simulated using a simple and reliable short-cut method and rigorously tested within an Aspen HYSYS® simulation environment. The energy and economic analyses show that the optimal sequence determined by the driving force method has a better energy reduction with a total of 6.78% energy savings and a return of investment of 3.10 with a payback period of 4 months. It can be concluded that, the sequence determined by the driving force method is not only capable in reducing energy consumption, but also has a better economic cost for an aromatic separation unit

A photodriven energy efficient membrane process for trace VOC removal from air: First step to a smart approach

2021 ◽  
pp. 129566
Author(s):  
Fabien Gérardin ◽  
Anaëlle Cloteaux ◽  
Julien Simard ◽  
Éric Favre
Keyword(s):  
Energy Efficient ◽  
Membrane Process ◽  
Voc Removal

scholarly journals Photopolymerized superhydrophobic hybrid coating enabled by dual-purpose tetrapodal ZnO for liquid/liquid separation

2022 ◽  
Author(s):  
Chenxuan Li ◽  
Brian Lee ◽  
Chenxu Wang ◽  
Aayushi Bajpayee ◽  
Lacey Douglas ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Low Cost ◽  
Liquid Mixtures ◽  
Immiscible Liquid ◽  
Hybrid Coating ◽  
Superhydrophobic Coating ◽  
Stainless Steel Mesh ◽  
Dual Purpose ◽  
Efficient Separation ◽  
Coating Methods

The development of low-cost and scalable superhydrophobic coating methods demands viable approaches for energy-efficient separation of immiscible liquid/liquid mixtures. A scalable photoinitiated method is developed to functionalize stainless-steel mesh with...

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