Energy Savings in the Benzene-Toluene-Xylene Separation Process Using an Extended Divided-Wall Column

2016 ◽  
Vol 39 (12) ◽  
pp. 2312-2322 ◽  
Author(s):  
Young H. Kim
Keyword(s):  
Energy Savings ◽  
Separation Process ◽  
Divided Wall Column ◽  
Benzene Toluene ◽  
Xylene Separation

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%.

scholarly journals Divided Wall Column Modeling and Simulation in an Open-Source Environment

2020 ◽  
Vol 34 (3) ◽  
pp. 149-167
Author(s):  
João Paulo Henrique ◽  
Ruy de Sousa Jr. ◽  
Argimiro Resende Secchi ◽  
Mauro Antonio da Silva Sá Ravagnani ◽  
Abdessamad Barbara ◽  
...  
Keyword(s):  
Modeling And Simulation ◽  
Open Source ◽  
Chemical Process ◽  
Energy Savings ◽  
Vapor Flow ◽  
Flow Rates ◽  
Distillation Columns ◽  
Simulation And Optimization ◽  
Modeling Simulation ◽  
Divided Wall Column

The divided wall column (DWC) can achieve sharp separations of three or more components in a single shell, substituting conventional sequences of two or more binary<br /> distillation columns, with lower expenses. Despite these advantages, DWC models are not available in commercial chemical process simulators. To simulate DWC, users must employ instances of conventional column model and couple them in different configurations. In this paper, a DWC model was developed in EMSO (Environment for Modeling, Simulation and Optimization). DWC model was then used for simulating the separation of an equimolar mixture of three hydrocarbons. Results show that, depending on the number of trays, DWC presented energy savings compared to two ordinary distillation columns. Better separation was obtained when the number of divided trays was close to half the number of total trays. However, the liquid and vapor flow rates split into the divided section play a key role in the separation.

Fundamental aspects of centrifugal membrane separation

2001 ◽  
Vol 215 (4) ◽  
pp. 355-365
Author(s):  
A Bergen ◽  
P M Wild ◽  
N Djilali ◽  
G W Vickers
Keyword(s):  
Experimental Investigation ◽  
Membrane Filtration ◽  
Concentration Polarization ◽  
Energy Savings ◽  
Membrane Separation ◽  
Dynamic Environment ◽  
Separation Process ◽  
Filtration Process ◽  
Membrane Performance ◽  
Centrifuge Rotor

A new membrane filtration process which uses the dynamic environment created on board a centrifuge rotor to enhance the performance of the separation process is described. Centrifugal membrane separation (CMS) combines the energy savings associated with centrifugal reverse osmosis (CRO) with the natural alleviation of concentration polarization and fouling due to the dynamic environment. A research centrifuge was constructed to compare the CMS process directly with a conventional process. An experimental investigation was conducted to determine the effects of centripetal and Coriolis acceleration on membrane performance. A description of the apparatus and the experimental results for various membrane orientations are presented. Significant reduction in the fouling rate and virtual elimination of concentration polarization have been shown.

Polyethersulfone (PES)/cellulose acetate butyrate (CAB) composite hollow fiber membranes for BTEX separation from produced water

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105692-105698 ◽  
Author(s):  
Shangwen Zha ◽  
Jianjia Yu ◽  
Guoyin Zhang ◽  
Ning Liu ◽  
Robert Lee
Keyword(s):  
Cellulose Acetate ◽  
Hollow Fiber ◽  
Produced Water ◽  
Cellulose Acetate Butyrate ◽  
Hollow Fiber Membranes ◽  
Fiber Membranes ◽  
Benzene Toluene ◽  
Oilfield Produced Water ◽  
Xylene Separation ◽  
Acetate Butyrate

Polyethersulfone (PES)/cellulose acetate butyrate (CAB) composite hollow fiber membranes were prepared by dry-jet wet-spinning for BTEX (benzene, toluene, ethylbenzene and xylene) separation from oilfield produced water.

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