Separation on Aromatics and Non-aromatics by Extractive Distillation with NMP
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概要
- 論文の詳細を見る
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.
- 社団法人 化学工学会の論文
- 2003-01-01
著者
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Chen Biaohua
The Key Laboratory Of Science And Technology Of Controllable Chemical Reactions Ministry Of Educatio
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Chen B
Tsinghua Univ. Beijing Chn
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LEI ZHIGANG
The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Educati
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LI JIANWEI
The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Ministry of Educati
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Li Jianwei
The Key Laboratory Of Science And Technology Of Controllable Chemical Reactions Ministry Of Educatio
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Lei Zhigang
The Key Laboratory Of Science And Technology Of Controllable Chemical Reactions Ministry Of Educatio
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