Optimal Synthesis of a High Purity Bioethanol Distillation Column Using Ionic Liquids

2011 ◽  
Vol 50 (9) ◽  
pp. 5175-5190 ◽  
Author(s):  
Luz Maria Chávez-Islas ◽  
Ruben Vásquez-Medrano ◽  
Antonio Flores-Tlacuahuac
Keyword(s):  
Ionic Liquids ◽  
High Purity ◽  
Distillation Column ◽  
Optimal Synthesis

Model Predictive Control of High‐purity Internal Thermal Coupled Distillation Column

2021 ◽  
Author(s):  
Ja'afar Sulaiman Zangina ◽  
Wenhai Wang ◽  
Weizhong Qin ◽  
Weihua Gui ◽  
Zeyin Zhang ◽  
...  
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
High Purity ◽  
Distillation Column

Decoupling control of high-purity heat integrated distillation column process via active disturbance rejection control and nonlinear wave theory

2020 ◽  
Vol 42 (12) ◽  
pp. 2221-2233 ◽  
Author(s):  
Yun Cheng ◽  
Zengqiang Chen ◽  
Mingwei Sun ◽  
Qinglin Sun
Keyword(s):  
Nonlinear Wave ◽  
Control Strategy ◽  
High Purity ◽  
Disturbance Rejection ◽  
Distillation Column ◽  
Decoupling Control ◽  
Active Disturbance Rejection Control ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Control Scheme

Although the heat integrated distillation is an energy-efficient and environment-friendly separation technology, it has not been commercialized. One of the reasons is that the nonlinear dynamics and the interactions between various control loops have limited the performance of the traditional control strategy. To achieve a high-purity product concentration, a dynamic decoupling control strategy based on active disturbance rejection control (ADRC) is proposed. The effects of interactions, uncertainties and external disturbances can be estimated and rejected by using extended state observer. Considering the constraints on manipulated variables, an optimized ADRC is designed for the first-order system. Moreover, a concentration observer based on a nonlinear wave model is formulated to reduce the number of sensors. In the simulation research, the related internal model control (IMC), multi-loop ADRC and model predictive control (MPC) are compared with the proposed control scheme. The simulation results demonstrate the advantages of the proposed control scheme on tight control, decoupling performance and disturbance rejection for the high-purity heat integrated distillation column.

Systematic Study on the General Preparation of Ionic Liquids with High Purity via Hydroxide Intermediates

2014 ◽  
Vol 53 (17) ◽  
pp. 6871-6880 ◽  
Author(s):  
Da-Niu Cai ◽  
Kuan Huang ◽  
Yong-Le Chen ◽  
Xing-Bang Hu ◽  
You-Ting Wu
Keyword(s):  
Ionic Liquids ◽  
Systematic Study ◽  
High Purity
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