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

Lijing Zang; Kejin Huang; Ting Guo; Yang Yuan; Haisheng Chen; Liang Zhang; Xing Qian; Shaofeng Wang

doi:10.1016/j.cjche.2018.11.023

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

Process Systems Engineering and Process Safety | Updated：2026-01-06

- Temperature inferential control of a reactive distillation column with double reactive sections
- Chinese Journal of Chemical Engineering Vol. 27, Issue 4, Pages: 896-904(2019)
- Affiliations：
  
  College of Information Science and Technology, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.11.023
  CLC：
- Published：2019
- Accepted：
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Lijing Zang, Kejin Huang, Ting Guo, Yang Yuan, Haisheng Chen, Liang Zhang, Xing Qian, Shaofeng Wang. Temperature inferential control of a reactive distillation column with double reactive sections[J]. Chinese Journal of Chemical Engineering, 2019, 27(4): 896-904.
DOI：

Lijing Zang, Kejin Huang, Ting Guo, Yang Yuan, Haisheng Chen, Liang Zhang, Xing Qian, Shaofeng Wang. Temperature inferential control of a reactive distillation column with double reactive sections[J]. Chinese Journal of Chemical Engineering, 2019, 27(4): 896-904. DOI： 10.1016/j.cjche.2018.11.023.

摘要

Abstract

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 ⇌ C + D

C + B ⇌ E + D with α

). 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.

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