Optimal design and performance analyses of the glycerol ether production process using a reactive distillation column

2016 ◽  
Vol 43 ◽  
pp. 93-105 ◽  
Author(s):  
Lida Simasatitkul ◽  
Punjawat Kaewwisetkul ◽  
Wisitsree Wiyaratn ◽  
Suttichai Assabumrungrat ◽  
Amornchai Arpornwichanop
Keyword(s):  
Optimal Design ◽  
Production Process ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Glycerol Ether ◽  
Performance Analyses ◽  
And Performance

Comparing Usage of Temperature Control and Composition Control for Reactive Distillation Column in Methyl Ester Production

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Kulchanat Prasertsit ◽  
Chakrit Tongurai ◽  
Chokchai Mueanmas
Keyword(s):  
Methyl Ester ◽  
Temperature Control ◽  
Distillation Column ◽  
Reactive Distillation ◽  
The Other ◽  
Base Case ◽  
Control Performance ◽  
Control Loop ◽  
Composition Control ◽  
And Performance

The temperature control and the composition control for the production process was used to evaluated a method to control the quality of methyl ester production in a reactive distillation column. The optimum condition at steady state was selected as the base case condition for the control study by using Aspen Dynamic Simulation. In this work, two controller settings for PID controller of each control loop were based on the Zeigler-Nichol and the Tyreus-Luyben tuning formulae. The controllability and performance of both control structures were compared. The result shows that the control loop using the Ziegler-Nichols setting gave better control performance than the other using the Tyreus-Luyben setting. It also found that the control structure based on temperature control gives the same control performance as the other based on composition control, but less expensive and less complicated to implement.

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 Novel Hybrid Reactive Distillation with Extraction and Distillation Processes for Furfural Production from an Actual Xylose Solution

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1152
Author(s):  
Le Cao Nhien ◽  
Nguyen Van Duc Long ◽  
Moonyong Lee
Keyword(s):  
Production Process ◽  
Energy Use ◽  
Reactive Distillation ◽  
Process Efficiency ◽  
Continuous Stirred Tank Reactor ◽  
Butyl Chloride ◽  
Distillation Columns ◽  
Reactive Liquid ◽  
Pharmaceutical Industries ◽  
Furfural Production

Furfural is only derived from lignocellulosic biomass and is an important chemical used in the plastics, agrochemical, and pharmaceutical industries. The existing industrial furfural production process, involving reaction and purification steps, suffers from a low yield and intensive energy use. Hence, major improvements are needed to sustainably upgrade the furfural production process. In this study, the conventional furfural process based on a continuous stirred tank reactor and distillation columns was designed and optimized from an actual aqueous xylose solution via a biomass pretreatment step. Subsequently, a reactive distillation (RD) and extraction/distillation (ED) configuration was proposed for the reaction and purification steps, respectively, to improve the process efficiency. RD can remove furfural instantly from the reactive liquid phase and can separate heavy components from the raw furfural stream, while the ED configuration with toluene and butyl chloride used as extracting solvents can effectively separate furfural from a dilute aqueous stream. The results showed that the hybrid RD-ED process using a butyl chloride solvent saves up to 51.8% and 57.4% of the total investment costs and total annual costs, respectively, compared to the conventional process. Furthermore, environmental impacts were evaluated and compared for all structural alternatives.

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