Simulation and Optimization of production of Cyclohexane from benzene using ASPEN Plus (original) (raw)
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The Dynamic Simulation of The Benzene and Toluene Distillation Process
Fluida
Benzene and toluene are products of petroleum catalytic fractionation and dehydrogenation, which are massively used for industrial purposes. The mixture of these two compounds forms an azeotropic condition that requires high energy and expensive investment. The separation process simulation is the appropriate way to address this problem. The technique of separating benzene and its derivatives from toluene is crucial if the product is to be reused for the following process. We propose a simulation of the separation of benzene and toluene using Aspen HYSYS with several assumptions (Peng-Robinson Fluid Package and Transfer Function Block) and operating conditions settings (pressure, flow rate, and vapor fraction). The simulation results were analyzed by comparing treatments without and with dynamic system settings (sudden and gradual changes in operational parameters for 30 minutes). The simulation results revealed that the stepwise dynamic system configuration might increase 10% extra...
International Journal of Research and Scientific Innovation, 2019
In this work, Aspen HYSYS simulation software was used to develop a process for Benzene-toluene-xylene BTX synthesis; a leading feedstock in the petrochemical industries for the synthesis of several chemicals, from liquefied petroleum gas LPG. The pinch and retrofit analysis as applicable to the developed model was carried out using Energy Analyser V10 in order to develop a network of heat exchanger, possible energy savings and payback period of the process. The result of the simulation showed that benzene, toluene and xylene have compositions of 89.3%, 95.5%, and 100% respectively suggesting that the process is highly favoured by low pressure and high reflux ratio. The energy analysis revealed that fifteen (15) heat exchanger network (HEN) were developed comprising of seven (7) heaters and eight (8) coolers for the base case simulation and about 0.6MWof wasted heat was recovered by incorporating three (3) additional heat exchangers to the base HEN leading to 9.6% total energy savings of the entire system. The retrofit design suggested three case scenarios yielding payback periods of 2.062 years, 1.802 years and 6.579 years respectively among which the one the second case scenario with 1.802 years was selected to be the preferred case scenario.
International Journal of Engineering Research in Africa, 2016
Reactive distillation, being an intensified process of combining reaction and distillation in a single vessel, is an ongoing research. This work considered the use of this novel process to investigate how the purity of a fatty acid methyl ester (oleic acid methyl ester – methyl oleate), which is an alternative fuel that has a potential economic bedrock, vary with variations in reflux ratio and reboiler duty with the aid of Aspen Plus model of the process. The column employed in developing the model of the process was a RadFrac type having 29 stages, which was divided into five sections, namely condenser (top), rectifying, reaction, stripping and reboiler (bottom) sections. After the development, the model was simulated using UNIversal QUAsiChemical model (UNIQUAC) base method. In order to investigate the sensitivity of the system, reflux ratio and reboiler duty were varied from 2.0-5.5 and 1350-1800 W, respectively. The results obtained from the steady-state simulation of the proces...
Simulation of the ethylene oxide production process in ChemCAD® simulator
Revista de Ciencia y Tecnología
Ethylene oxide is an important industrial chemical compound used as an intermediate in the production of glycols and other plastics. In the present work, the process of ethylene oxide (EO) production from the catalytic oxidation of ethylene was simulated using the ChemCAD® simulator. Heat curves were obtained for each of the shell and tube heat exchangers used, while the flow rate and composition of the most important streams involved in the production process were determined. A sensitivity study was also carried out to establish the influence of a decrease in the feed temperature of the wash water to the absorbers on the amount of EO to be obtained in the distillation column. 22,163.5 kg/h of EO is obtained from the top of the distillation column with a purity of 98.29 %. The wash water should be fed to the absorbers at a temperature of 5 ºC to maximise the amount of EO to be obtained in the distillation column.