Simulation and analysis of multi-stage centrifugal fractional extraction process of 4-nitrobenzene glycine enantiomers

Ping Wen; Kewen Tang; Jicheng Zhou; Panliang Zhang

doi:10.1016/j.cjche.2015.08.015

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Simulation and analysis of multi-stage centrifugal fractional extraction process of 4-nitrobenzene glycine enantiomers

分离科学与工程 | Updated：2026-01-06

- Simulation and analysis of multi-stage centrifugal fractional extraction process of 4-nitrobenzene glycine enantiomers
- Chinese Journal of Chemical Engineering Vol. 23, Issue 11, Pages: 1774-1781(2015)
- Affiliations：
  
  2 Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology,Yueyang,China,414006
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.08.015
  CLC：
- Published：2015
- Accepted：
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Ping Wen, Kewen Tang, Jicheng Zhou, Panliang Zhang. Simulation and analysis of multi-stage centrifugal fractional extraction process of 4-nitrobenzene glycine enantiomers[J]. Chin.J.Chem.Eng., 2015, 23(11): 1774-1781.
DOI：

Ping Wen, Kewen Tang, Jicheng Zhou, Panliang Zhang. Simulation and analysis of multi-stage centrifugal fractional extraction process of 4-nitrobenzene glycine enantiomers[J]. Chin.J.Chem.Eng., 2015, 23(11): 1774-1781. DOI： 10.1016/j.cjche.2015.08.015.

摘要

Abstract

Based on the interfacial ligand exchangemodel and the law of conservation ofmass

themulti-stage enantioselective liquid-liquid extraction model has been established to analyze and discuss on multi-stage centrifugal fractional extraction process of 4-nitrobenzene glycine (PGL) enantiomers. The influence of phase ratio

extractant concentration

and PF

concentration on the concentrations of enantiomers in the extract and raffinate was investigated by experiment and simulation. A good agreement between model and experiment was obtained. On this basis

the influence ofmany parameters such as location of stage

concentration levels

extractant excess

and number of stages on the symmetric separation performance was simulated. The optimal location of feed stage is the middle of fractional extraction equipment. The feed flow must satisfy a restricted relationship on flow ratios and the liquid throughout of centrifugal device. For desired purity specification

the required flow ratios decrease with extractant concentration and increase with PF

concentration.When the number of stages is 18 stages at extractant excess of 1.0 or 14 stages at extractant excess of 2.0

the eeeq (equal ena

ntiomeric excess) can reach to 99%.

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