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Wang B, Qian H, Gao Z, Wu X, Yang G, Zhou Z, Zhang F, Zhang Z. Salt Effect on the Isobaric Vapor-Liquid Equilibrium Study of Binary Mixtures H 2O-NMP ( N-Methyl-2-pyrrolidone). ACS OMEGA 2020; 5:31036-31043. [PMID: 33324811 PMCID: PMC7726754 DOI: 10.1021/acsomega.0c04056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 10/22/2020] [Indexed: 06/12/2023]
Abstract
To study the salt effect of recovering N-methyl-2-pyrrolidone (NMP) from the waste liquid produced in the polyphenylene sulfide (PPS) synthesis process, this study presents vapor-liquid equilibrium (VLE) measurement and correlation for water + NMP, water + NMP + lithium chloride, and water + NMP + sodium chloride at p = 101.3 kPa. The salt effect is discussed and the salts follow the order of lithium chloride > sodium chloride. The NRTL model was used for the correlation with binary parameters of water + NMP, water + NMP + lithium chloride, and water + NMP + sodium chloride. The correlation showed good agreement with experimental data; root-mean-square deviations are less than 0.48 K for the equilibrium temperature and 0.005 for the vapor-phase mole fraction of water.
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Affiliation(s)
- Baorong Wang
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hongliang Qian
- School
of Engineering, China Pharmaceutical University, Nanjing 210009, China
| | - Ziya Gao
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiankun Wu
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Guoqiang Yang
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zheng Zhou
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Feng Zhang
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Zhibing Zhang
- Department
of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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