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

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.

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.

Esterification of fatty acids in a thermally coupled reactive distillation column by the two-step supercritical methanol method

2011 ◽  
Vol 89 (4) ◽  
pp. 480-490 ◽  
Author(s):  
Fernando Israel Gómez-Castro ◽  
Vicente Rico-Ramírez ◽  
Juan Gabriel Segovia-Hernández ◽  
Salvador Hernández-Castro
Keyword(s):  
Fatty Acids ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Supercritical Methanol

Combined Gain-Scheduling and Multimodel Control of a Reactive Distillation Column

2004 ◽  
Vol 37 (1) ◽  
pp. 791-796
Author(s):  
Budi H. Bisowarno ◽  
Yu-Chu Tian ◽  
Moses O. Tadé
Keyword(s):  
Distillation Column ◽  
Reactive Distillation ◽  
Gain Scheduling
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