Modeling and Simulation of Ethyl Acetate Reactive Distillation Column Using Aspen Plus (original) (raw)

Simulation Of Reactive Distillation Column

Reactive distillation processes couple chemical reactions and physical separations into a single unit operation. The ethyl acetate production by esterification reaction is equilibrium limited and is suitable to be carried out in a distillation column. In the present work, a reactive distillation column for the production of ethyl acetate is simulated using Aspen Plus. The component compositions and temperature at each stage of the column are predicted. The effect of feed stream(s) arrangement on the simulation results is presented.

Mathematical Modeling and Simulation of Reactive Distillation Column using MATLAB and Aspen Plus®

2014

Reactive Distillation (RD) is a combination of reaction and distillation in a single vessel owing to which it enjoys a number of specific advantages over conventional sequential approach of reaction followed by distillation. Improved selectivity, increased conversion, better heat control, effective utilization of reaction heat, scope for difficult separations and the avoidance of azeotropes are the few of the advantages offered by RD. Compared with the conventional process of carrying out reaction and separation sequentially, RD column can favourably influence conversion and selectivity, especially of equilibrium reactions. However, there are feasibility constraints resulting both from thermodynamics and chemistry. The process intensification leads to higher complexity and this is especially true for heterogeneously catalyzed RD with its complex interaction between vapors, liquid and immobilized solid catalyst phase. This work mainly deals with synthesis of iso-amyl acetate in RD column. This paper comprehensively reports on both simulation work using Aspen Plus ® and MATLAB (TM) . The simulations were based on the equilibrium-stage approach and, for comparison; a rate-based model is also used. In this paper, the equilibrium model for synthesis of iso-amyl acetate was developed. The simulation studies were performed in Aspen Plus ® and MATLAB (TM) . The Published experimental data on phase equilibrium and reaction studies was used to verify the model predictions. The experimental results from literature were compared with model predictions and were found to be close to those available in the literature.

Modeling and Simulation of Ethyl Acetate Reactive Distillation Column

2006

Reactive distillation (RD) is an attractive way of improving process economics by combining distillation and reaction, especially for equilibrium limited reactions such as esterification. Two of the most studied esterification reactions via RD in the literature are methyl acetate synthesis and ethyl acetate synthesis. The ideal performance of the RD column would be to achieve almost complete conversion of both reactants while at the same time producing pure esters as distillate. From I also would like to thank members of postgraduate committee for their many useful suggestions and comments that enhanced the quality of this work. Finally, I would like to express my deepest gratitude to my parents, siblings for all their supports and to my beloved wife for her love; continuous encouragement and caring that brightened my life.

Review Modelling of Reactive Distillation Column

Reactive distillation, i.e. the combination of chemical reaction and distillated product separation in a single unit owing to which itenjoys a number of specific advantages overconventional process or other techniques.Inthis work review on modelling of reactivedistillation for the production of methyl acetatethrough esterification. Methyl acetate and wateris produced by the liquid phase reaction of aceticacid and methanol in the presence of an acid catalyst(e.g. sulfuric acid or a sulfonic acid and ionexchange resin) at 298 K temperature and pressure of 1 atm.In the production of methyl acetate the formation of the low boiling azeotropic mixtures methyl acetate/methanol and methyl acetate/water results in separation ofthese azeotropes is very difficult.This work has been carried out to simulate the conventional and the reactive distillation process methods used for the production of methyl acetate through esterification reaction between acetic acid and methanolusing Aspen Plus. The ...

Comparison of computer simulation of reactive distillation using ASPEN PLUS and HYSYS software

Chemical Engineering and Processing: Process …, 2002

A comparison of computer simulation results of reactive distillation obtained by ASPEN PLUS and HYSYS software was done. Esterification of acetic acid and 1-butanol was chosen as the model reaction proceeding in a reactor and reactive distillation column (RD) system. A nearly equimolar reaction mixture was fed into the equilibrium fixed bed reactor and the liquid product was continuously fed into reaction zone of the reactive distillation column. The same mass balance in the reactor and reactive distillation column was used to compare the adequacy of chosen simulation systems. The results of computer simulation have been consequently compared with pilot plant experimental data. A good agreement was reached.

35277656-Modeling-and-Simulation-of-Ethyl-Acetate-Reactive-Distillation-Column-Using-ASPEN-PLUS

This is to certify that the thesis entitled Modeling and Simulation of Ethyl Acetate Reactive Distillation Column Using ASPEN PLUS, submitted by Shyam Kumar to National Institute of Technology, Rourkela is a record of bonafide project work under my supervision and is worthy for the partial fulfillment of the degree of Bachelor of Technology (Chemical Engineering) of the Institute. The candidate has fulfilled all prescribed requirements and the thesis, which is based on candidate's own work, has not been submitted elsewhere.

Process design and simulation strategies for reactive distillation column

2014

The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately. Reactive Separation Processes (RSP's) combine the unit operations of reaction and separation into a single, simultaneous operation. It provides an important synergistic effect and brings about several advantages. This fusion of reaction and separation into one combined operation brings simplicity and novelty to the process flow sheet. This technology has been proved to have conclusive advantages over conventional technologies in terms of their energy; capital cost reductions and increased reaction efficiency.[1,2] RSP's are popular for the cost savings in investment and operation garnered on successful scale-up to commercial operations. These technologies are gaining importance due to economic opportunities which have caused the emergence of new industries using new separation and process technologies, to give better efficiencies of operation and quantification of product demanded by food, pharmaceuticals, polymer, and electronic industries. Due to changes in the availability and pricing of the key resources, and growing concern for protecting our environment, these technologies are also being seen as front-runner in the field of industrial separations. Reactive distillation (RD) is an attractive and promising process, which has been established in a variety of successful commercial applications. Compared with the conventional process of carrying out reaction and separation sequentially, the in-situ removal of products formed in the reaction zone of a RD column can favorably influence conversion and selectivity, especially of equilibrium limited reactions. Together with a significantly reduced effort in the separation train, this can result in major energy as well as capital cost savings. However, there are feasibility constraints resulting both from thermodynamics and chemistry. [5 In addition to this, the process intensification leads to higher complexity. This holds especially true for the case of heterogeneously catalyzed RD with its complex interaction between vapor, liquid and immobilized solid catalyst. [5, 6]

Simulation of Ethyl Acetate Synthesis via Reactive Distillation Bachelor Final Year Project

2015

Ethyl acetate (EtAc) is mainly used as solvent in paints, adhesives and coatings, eliminating the use of aromatic compounds. Reactive distillation is a type of process intensification in which the separation and reaction is combined in one vessel. In this work, reactive distillation (RD) process for EtAc was implemented using process simulator Aspen HYSYS by applying the data obtained from the bibliography. A sensitive analysis was performed to determine the effects of key design and operating variables on column performance and, subsequently, an optimal column configuration was obtained

Modeling of Reactive Distillation Column for the production of Ethyl Acetate

The production of ethyl acetate is gaining lot of attention because of the growing needs of the greener fuel in the world. Reactive distillation (RD) is a column in which reactor and separator work simultaneously. Ethyl acetate is an ester produced through the reversible reactions such as esterification and etherification in reactive distillation column. In the proposed work modeling of the reactive distillation column for the production of ethyl acetate is given. The model incorporates reaction kinetics and vapor liquid non idealities balanced through MESH (Material Balance, Equilibrium Relationships, Summation equation and energy balance). Present study discussed the current modeling techniques and its importance.

Modelling, Simulation and Control of Ethyl Acetate Reactive Distillation Column using ChemCAD

2012

The modelling, simulation and control of a reactive distillation column for the production of ethyl acetate from acetic acid and ethanol has been studied using commercially available process simulation software, CHEMCAD ®. The effects of key operating variables such as reflux ratio, distillate rate, feed tray location and activity model on the composition of ethyl acetate in the distillate at steady state were studied. Steady state simulation results show that if a double feeding strategy is adopted, acetic acid must be fed to the tray 2 while ethanol must be fed to tray 12 in order to obtain optimum composition of ethyl acetate in the liquid phase. Also, a reflux ratio of 12 resulted in optimum composition of ethyl acetate in the liquid phase. Increasing the distillate rate resulted in an increase in the composition of ethyl acetate in the liquid phase. Using the steady state results as an initial state, dynamic simulations were run for the purpose controlling the reboiler pressure and ethyl acetate purity. For pressure control, the Ziegler-Nichols (ZN) tuning method was used to tune the controller parameters resulting in an optimal value of integral square error (ISE)of 587.85 and corresponding values of 0.13 and 7.05 for proportional gain and integral time constant (c K and I τ) respectively. A simulation exercise such as presented in this work is very important and is increasingly becoming popular. This is because simulation of mathematical models of chemical processes is safe, cheap and less time demanding. This has also been helped by the development of computers with high computational capabilities.