Temperature inferential control of a reactive distillation column with double reactive sections

被引：3
|
作者：
Zang, Lijing [1 ]
Huang, Kejin [1 ]
Guo, Ting [1 ]
Yuan, Yang [1 ]
Chen, Haisheng [1 ]
Zhang, Liang [1 ]
Qian, Xing [1 ]
Wang, Shaofeng [1 ]
机构：
[1] Beijing Univ Chem Technol, Coll Informat Sci & Technol, Beijing 100029, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2019年 / 27卷 / 04期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Reactive distillation column; Temperature inferential control; Sensitivity analysis; Transient deviation; Steady-state deviation; CONTROLLABILITY; SELECTION;
D O I：
10.1016/j.cjche.2018.11.023
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Temperature inferential control (TIC) is studied for a reactive distillation column with double reactive sections (RDC-DRSs) processing a hypothetical two-stage consecutive reversible reaction (A + B reversible arrow C + D, C + B reversible arrow E + D with alpha(D) > alpha(C) > alpha(A) >alpha(E)). Because of the complicated dynamic behaviors, the controlled stages by sensitivity analysis lead to great steady-state deviations (SSDs) in top and bottom product purities. Since TIC involves considerably reduced settling times in comparison with direct composition control, small SSDs in product qualities correspond generally to small transient deviations (TDs) in product qualities. An objective function that measures SSDs in product qualities is formulated to represent the performance of a TIC system and an iterative procedure is devised to search for the best control configuration. The application of the procedure to the RDC-DRS gives considerably suppressed TDs and SSDs in top and bottom product qualities as compared with the one by sensitivity analysis. The method is simpler in principle and less computationally intensive than the current practice. These striking outcomes show the effectiveness of the proposed principle for the development of TIC systems for complicated reactive distillation columns. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
引用
收藏
页码：896 / 904
页数：9
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