https://scholars.lib.ntu.edu.tw/handle/123456789/445360
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Yi, C.-C. | en_US |
dc.contributor.author | Huang, W.-C. | en_US |
dc.contributor.author | Chien, I.-L. | en_US |
dc.contributor.author | I-LUNG CHIEN | en_US |
dc.creator | I-LUNG CHIEN;Chien, I.-L.;Huang, W.-C.;Yi, C.-C. | - |
dc.date.accessioned | 2020-01-06T03:08:26Z | - |
dc.date.available | 2020-01-06T03:08:26Z | - |
dc.date.issued | 2018 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/445360 | - |
dc.description.abstract | Cyclohexane and cyclohexene are close-boiling compounds with relative volatility extremely close to unity, thus, separation via conventional distillation is impractical. In this paper, an energy-efficient heterogeneous extractive distillation system using ethylene glycol as heavy entrainer is proposed. By adding ethylene glycol into the system, large liquid-liquid envelope will form. However, the principle of separation is not exclusively the formation and split of heterogeneous azeotrope like that of a typical heterogeneous azeotropic distillation process, but also because of ethylene glycol greatly enhances the relative volatility of cyclohexane over cyclohexene when treated as a heavy entrainer. The proposed heterogeneous extractive distillation column includes a top decanter and no rectifying section. After establishing the base design of the proposed system, energy-saving schemes are also suggested to further reduce the total annual cost and the annual operating cost. The results show that the proposed heterogeneous extractive distillation system with a process-to-process heat exchanger has the predominant benefit of the lowest total annual cost. To compare the optimal result of this design flowsheet with a recently published separation method utilizing two reactive-distillation columns, our proposed design is much more economical with 61.4% savings in total annual cost and 64.6% savings in annual operating cost. © 2018 Taiwan Institute of Chemical Engineers | - |
dc.relation.ispartof | Journal of the Taiwan Institute of Chemical Engineers | - |
dc.subject | Close boiling; Cyclohexane/cyclohexene separation; Extractive distillation; Heterogeneous azeotropic distillation; Process design | - |
dc.subject.classification | [SDGs]SDG7 | - |
dc.subject.other | Costs; Cyclohexane; Distillation; Energy conservation; Energy efficiency; Ethylene; Ethylene glycol; Operating costs; Polyols; Process design; Annual operating costs; Close-boiling; Energy saving schemes; Extractive distillation; Extractive distillation systems; Heterogeneous azeotropic distillation; Process heat exchangers; Reactive distillation columns; Distillation columns | - |
dc.title | Energy-efficient heterogeneous extractive distillation system for the separation of close-boiling cyclohexane/cyclohexene mixture | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.jtice.2018.03.042 | - |
dc.identifier.scopus | 2-s2.0-85044971189 | - |
dc.identifier.url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044971189&doi=10.1016%2fj.jtice.2018.03.042&partnerID=40&md5=888e3468ff15581d287f58a493e557fa | - |
dc.relation.pages | 26-35 | - |
dc.relation.journalvolume | 87 | - |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.orcid | 0000-0003-2947-8713 | - |
顯示於: | 化學工程學系 |
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