Energy-efficient separation process and control scheme for extractive distillation of ethanol-water using deep eutectic solvent
Energy-efficient separation process and control scheme for extractive distillation of ethanol-water using deep eutectic solvent
复制标题
低共熔溶剂乙醇-水萃取精馏节能分离工艺及控制方案
DOI：
10.1016/j.seppur.2019.03.022
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发表时间：
2019-07
影响因子：
8.6
通讯作者：
Sun Lanyi
中科院分区：
文献类型：
--
作者：
Pan Qi;Shang Xianyong;Li Jie;Ma Shoutao;Li Lumin;Sun Lanyi
随着溶剂（或称萃取剂）的发展和改进，萃取精馏过程得到了显著的强化，分离过程的能耗也得到了有效的降低。本文设计了一种低共熔溶剂氯化物/尿素（1：2）萃取精馏节能分离工艺。选择乙醇脱水过程作为案例研究，以评估这种新型溶剂在大规模生产中的实际效用。采用多目标遗传算法对萃取精馏过程进行优化设计，通过强化传热策略回收废热，实现优化设计。五个控制方案，其中包括比例积分（PI）和模型预测控制策略（MPC），开发的建议分离过程。根据被控变量与被控变量之间的非线性关系，设计了改进的控制结构，以提高系统的动态性能。以积分绝对误差（IAE）和损失火用作为评价标准，对系统的可控性和能量效率进行了检验。结果表明，CS4和MPC控制方案都具有良好的可控性，MPC控制方案比CS4控制方案具有更好的能量效率。
With the development and improvement of solvents (or entrainers), the extractive distillation process has been significantly enhanced, and the energy consumption of the separation process has been effectively reduced. In this work, the energy-efficient separation process for extractive distillation with deep eutectic solvent ChCl/Urea (1:2) is designed. The ethanol dehydration process is selected as a case study to evaluate the practical utility of this novel solvent in large-scale production. The multi-objective genetic algorithm is used to optimize the extractive distillation process, and the waste heat is recovered through the heat intensification strategy to achieve the optimal design. Five control schemes, which include proportional-integral (PI) and model predictive control strategies (MPC), are developed for the proposed separation process. According to the nonlinear relationship between manipulated variables and controlled variables, the improved control structures are designed to enhance the dynamic performance. Integral absolute error (IAE) and destroyed exergy are applied as evaluation criteria to test the controllability and energy efficiency of the system. The results show that both CS4 and MPC control schemes have good controllability, and the MPC control scheme displays better energy efficiency than the CS4 control scheme.
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DOI：
10.1590/0104-6632.20160332s20140212
发表时间：
2016-06
影响因子：
1.2
作者：
A. S. Yamashita;A. Zanin;D. Odloak
通讯作者：
A. S. Yamashita;A. Zanin;D. Odloak
苯/环己烷混合物萃取分隔壁塔的设计与控制
影响因子：
4.2
作者：
Wang, Qiuyuan;Li, Lumin;Zhai, Jian;Liu, Yuliang
通讯作者：
Liu, Yuliang
影响因子：
4.2
作者：
W. Luyben
通讯作者：
W. Luyben
影响因子：
6.7
作者：
W. Seider;J. D. Seader;D. Lewin;S. Widagdo
通讯作者：
W. Seider;J. D. Seader;D. Lewin;S. Widagdo
动态控制共沸现象萃取精馏的综述
影响因子：
3.8
作者：
Ma Yixin;Cui Peizhe;Wang Yongkun;Zhu Zhaoyou;Wang Yinglong;Gao Jun
通讯作者：
Gao Jun