Investigation of the operability for four-product dividing wall column with two partition walls

Xiaolong Ge; Botong Liu; Botan Liu; Hongxing Wang; Xigang Yuan

doi:10.1016/j.cjche.2017.10.029

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Investigation of the operability for four-product dividing wall column with two partition walls

Selected Papers from the Chinese Process Systems Engineering Annual Meeting 2017 | Updated：2026-01-06

- Investigation of the operability for four-product dividing wall column with two partition walls
- Investigation of the operability for four-product dividing wall column with two partition walls
- 中国化学工程学报（英文版） 2018年26卷第8期页码：1670-1676
- Affiliations：
  
  2 State Key Laboratory of Chemical Engineering, Tianjin University,Tianjin,China,300354
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.10.029
  中图分类号：
- 纸质出版：2018
- Accepted：
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Xiaolong Ge, Botong Liu, Botan Liu, 等. Investigation of the operability for four-product dividing wall column with two partition walls[J]. 中国化学工程学报（英文版）, 2018,26(8):1670-1676.

Xiaolong Ge, Botong Liu, Botan Liu, Hongxing Wang, Xigang Yuan. Investigation of the operability for four-product dividing wall column with two partition walls[J]. Chin.J.Chem.Eng., 2018, 26(8): 1670-1676.
Xiaolong Ge, Botong Liu, Botan Liu, 等. Investigation of the operability for four-product dividing wall column with two partition walls[J]. 中国化学工程学报（英文版）, 2018,26(8):1670-1676. DOI： 10.1016/j.cjche.2017.10.029.

Xiaolong Ge, Botong Liu, Botan Liu, Hongxing Wang, Xigang Yuan. Investigation of the operability for four-product dividing wall column with two partition walls[J]. Chin.J.Chem.Eng., 2018, 26(8): 1670-1676. DOI： 10.1016/j.cjche.2017.10.029.

摘要

Abstract

For separating some specific four component mixtures into four products

the four-product dividing wall column (FPDWC) with two partition walls can provide the same utility consumption with the extended Petlyuk configuration

although with structure simplicity. However

the reluctance to implement this kind of four product dividing wall column industrially also consists in the two uncontrollable vapor splits associated with it. The vapor split ratios are set at the design stage and might not be the optimal value for changed feed composition

thus minimum energy consumption could not be ensured. In the present work

a sequential iterative optimization approach was initially employed to determine the parameters of cost-effective FPDWC. Then the effect of maintaining the vapor split ratios at their nominal value on the energy penalty was investigated for the FPDWC with two partition walls

in case of feed composition disturbance. The result shows that no more than +2% above the optimal energy requirements could be ensured for 20% feed composition disturbances

which is encouraging for industrial implementation.

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