Separation on Aromatics and Non-aromatics by Extractive Distillation with NMP.
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- Chen Biaohua
- The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology
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- Lei Zhigang
- The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology
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- Li Jianwei
- The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Education, Beijing University of Chemical Technology
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Abstract
Vapor-liquid-equilibrium (VLE) at normal pressure for the system formed by n-heptane, benzene and N-methyl-pyrrolidone (NMP) are investigated. The results show that NMP is a good extractive solvent that reverses the volatility of the binary system of n-heptane + benzene. A UNIFAC model is selected and proved that the group interaction parameters are reliable. A modified extractive distillation (MED) process, in which a little of water is added to lower the boiling point of reboilers in aromatics recovery column, is proposed on the basis of the original extractive distillation (OED) process. The process simulation shows that the proposed process raises the yield ratio of benzene from 94.2% to 98.2%. Since the modification is not complicated, the MED process have a lasting value in industry.
Journal
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 36 (1), 20-24, 2003
The Society of Chemical Engineers, Japan
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Details 詳細情報について
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- CRID
- 1390001204566070400
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- NII Article ID
- 130000019877
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- NII Book ID
- AA00709658
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- COI
- 1:CAS:528:DC%2BD3sXosFyrsQ%3D%3D
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- ISSN
- 18811299
- 00219592
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- NDL BIB ID
- 6412612
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed