scholarly journals Control of a reactive distillation column for methyl acetate system using Aspen Plus

2016 ◽  
Vol 4 (26) ◽  
pp. 12-16 ◽  
Author(s):  
Satirtha Kumar Sarma ◽  
Kailash Singh ◽  
Rajeev Kumar Dohare
Keyword(s):  
Methyl Acetate ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Aspen Plus

scholarly journals Multiplicity Analysis in Reactive Distillation Column Using ASPEN PLUS

2006 ◽  
Vol 14 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Bolun YANG ◽  
Jiang WU ◽  
Guosheng ZHAO ◽  
Huajun WANG ◽  
Shiqing LU
Keyword(s):  
Distillation Column ◽  
Reactive Distillation ◽  
Aspen Plus

Reactive Divided Wall Distillation Column: Simulation and Experiment of Methyl Acetate Hydrolysis

2012 ◽  
Vol 468-471 ◽  
pp. 2785-2789 ◽  
Author(s):  
Yan Wang ◽  
He Xu Ma ◽  
Huai Gong Zhu ◽  
Wei Tang
Keyword(s):  
Methyl Acetate ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Molar Ratio ◽  
Reflux Ratio ◽  
Liquid Distribution ◽  
Divided Wall Column ◽  
New Process ◽  
Simulation And Experiment ◽  
Complex Technology

As a combination of divided wall column (DWC) and reactive-distillation column, the reactive divided wall distillation column is a highly complex technology that reaction and separation can occur simultaneously, which can reduce the energy consumption and decrease the costs of captial and operation. This new process was simulated with PROⅡ software and mini plant experiments were implemented. In addition, we investigated the influences of reflux ratio, liquid distribution ratio and molar ratio of ester in water on the conversion rate of methyl acetate and the purity of the product respectively. It could be seen that the trend from experiments was suitable with simulation results.

scholarly journals Design and simulation of high purity biodiesel reactive distillation process

2019 ◽  
Vol 21 (3) ◽  
pp. 1-7 ◽  
Author(s):  
Syed Sadiq Ali ◽  
Mohammad Asif ◽  
Avijit Basu
Keyword(s):  
High Purity ◽  
Fossil Fuels ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Aspen Plus ◽  
Esterification Reaction ◽  
Distillation Process ◽  
Water Composition ◽  
Product Stream ◽  
Process Simulator

Abstract Biodiesel is a promising energy substitute of fossil fuels since it is produced from renewable and biodegradable sources. In the present work, reactive distillation (RD) process is designed and simulated using Aspen Plus process simulator to produce biodiesel of high purity through esterification reaction. The simultaneous reaction and separation in same unit enhances the biodiesel yield and composition in RD process. Two flowsheets are proposed in present work. In the first flowsheet, the unreacted methanol is recycled back to reactive distillation column. Biodiesel with 99.5 mol% purity is obtained in product stream while the byproduct stream comprises 95.2 mol% water, which has to be treated further. In the second flowsheet, a part of methanol recycle is split and purged. In this case, the biodiesel composition in product stream is 99.7 mol% whereas water composition is 99.9 mol% in byproduct stream, which can be reused for other process without treatment.

Distilasi reaktif metanol-asam asetat-metil asetat-air

2018 ◽  
Vol 7 (2) ◽  
pp. 804
Author(s):  
Cheryl Raditya ◽  
Widya Wahyuni ◽  
Danu Ariono
Keyword(s):  
Acetic Acid ◽  
Methyl Acetate ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Water System ◽  
Batch Distillation ◽  
Bottom Temperature ◽  
Separation Processes ◽  
Feed Composition ◽  
Separation Degree

In chemical industry, efficiency of the production unit becomes an important factor. Reaction and separation can be done simultaneously in reactive distillation column. This method is used in esterification of acetic acid with methanol to produce methyl acetate and water. The purpose of this research is to study the separation processes through distillation for reactive components by identifying feed   composition effects on degree of separation. This research is done by varying methanol and acetic acid in feed composition in batch distillation with total reflux condition.  The feed  compositions  used during this research  is 50%/50%,   75%/25%,  33%/67%  and  67%/33%-volume  methanol/acetic  acid.  Through this research, feed composition with 67%-volume methanol/33%-volume acetic acid is the best composition for  acetic acid-methanol-methyl acetate-water   system   in   reactive distillation. Feed composition affects top and bottom temperature of the column and distillate composition.  Top and bottom temperature of the column gets lower if there is lighter component in feed composition. But too many light components in feed composition will decrease separation degree in reactive distillation column because light component will be drawn to distillate. Key words: reactive distillation, esterification, methyl acetate AbstrakPenggunaan unit produksi yang efektif telah menjadi faktor yang sangat diperhatikan dalam dunia industri. Dalam industri berbasis teknik kimia, reaksi dan pemisahan dapat dilakukan bersamaan dalam satu alat, dengan distilasi reaktif. Metode ini digunakan dalam proses esterifikasi asam asetat dan metanal menghasilkan metil asetat dan air. Penelitian ini bertujuan untuk mempelajari proses pemisahan dengan cara distilasi untuk komponen­komponen yang bereaksi dengan mengidentifikasi pengaruh komposisi umpan dalam kolom distilasi. Percobaan dilakukan dengan memvariasikan komposisi umpan metanal dan asam asetat dalam sistem   distilasi batch dengan kondisi refluks total. Pada percobaan menggunakan empat variasi komposisi umpan, yaitu campuran 50% /50%, 75%/25%, 33%/67% dan 67%/33%-volume   metanol/asam asetat. Dari percobaan, diperoleh komposisi umpan yang paling tepat untuk sistem asam asetatmetanol-metil asetat-air dalam kolom distilasi reaktif adalah 67%/33%-volume metanol/asam asetat.  Komposisi umpan mempengaruhi temperatur bagian alas dan bagian bawah kolom serta komposisi distilat. Makin banyak komponen ringan dalam umpan, makin rendah temperatur bagian atas dan bagian bawah kolom. Akan tetapi, komposisi reaktan ringan yang terlalu banyak di dalam umpan akan menurunkan derajat pemisahan produk dalam kolom distilasi reaktif karena komponen ringan akan terbawa dalam produk distilat.Kata Kunci: distilasi reaktif, esterifikasi, metil asetat

scholarly journals Non-square open-loop dynamic model of methyl acetate production process by using reactive distillation column

2018 ◽  
Vol 154 ◽  
pp. 01008 ◽  
Author(s):  
Ahmad Misfa Kurniawan ◽  
Renanto Handogo ◽  
Hao-Yeh Lee ◽  
Juwari Purwo Sutikno
Keyword(s):  
Production Process ◽  
Dynamic Model ◽  
Methyl Acetate ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Open Loop ◽  
Feed Ratio ◽  
Reflux Ratio ◽  
Acetate Production ◽  
Real Process

The development of mathematics model especially non-square open-loop dynamic model has grown rapidly since four decades. Because of the need of simplicity and accuracy, industrial world is demanding a dynamic mathematical model as simple as possible but it still can represent the whole real process. Therefore, to meet those needs, an open-loop dynamic model of methyl acetate production process by using reactive distillation column has been built. Feed ratio, reflux ratio and reboiler duty were chosen to be the manipulated variables to make a better performance rather than only reflux flowrate and reboiler duty. Methyl acetate fraction in distillate and water fraction in bottom were still be selected as controlled variables, so a non-square open-loop dynamic model was formed.

scholarly journals Economic Analysis for Energy Efficient Reactive Distillation

2019 ◽  
Vol 8 (9) ◽  
pp. 1001-1006
Keyword(s):  
Distillation Column ◽  
Reactive Distillation ◽  
Operating Cost ◽  
Cooling Water ◽  
Aspen Plus ◽  
Downstream Processing ◽  
Operating Conditions ◽  
Analysis Tool ◽  
Reflux Ratio ◽  
Simulation And Optimization

Complex chemical reactions and downstream processing can be performed in reactive distillation column to overcome with equilibrium limitations and to make it an economical process. An existing reactive distillation unit is costly to modify due its complex configuration and existing limitations of structure, space area, etc. Modifying an existing plant is a tedious task and more complex than a new process. Thus, to modify the existing operating conditions and input design variables it is necessary to verify by applying the same in real plant condition. This is done using revamping based on rigorous simulation and optimization in Aspen Plus process simulator. The main form of energy generator used in a distillation column is reboiler which directly affects the utilities such as cooling water, electricity and steam. Therefore, optimizing this reboiler duty to reduce energy losses is done using optimization model analysis tool of Aspen Plus. This reduction of energy demands diminishes the operating cost as per the reduction in utility cost. Now this reduction in operating cost is evaluated corresponding to the optimized reflux ratio and number of plates as obtained using sensitivity analysis tool of Aspen Plus.

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