Extractive Distillation of Ethylbenzene and Styrene using Sulfolane as Solvent: Low Pressure Isobaric VLE Data

M.T.G. Jongmans, A.J. Luijks, J. Maassen, B. Schuur, A.B. Haan, de

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    Abstract

    The distillation of ethylbenzene (EB) from styrene (SM) is very energy intensive. By using extractive distillation instead, both capital and energy expenses are potentially reduced dramatically. Hereto we propose to use sulfolane (SF) as solvent. Currently there is no ternary vapor liquid equilibrium (VLE) data available of the system SM/EB/SF and the binary VLE data sets of EB/SM available in literature are found to be thermodynamically inconsistent. In this study thermodynamically consistent VLE data is obtained for the three binary systems and the ternary system in the pressure range of 50-200 mbar. Both the Wilson and NRTL model can adequately describe the experimental VLE data. The solvent SF increases the relative volatility significantly from 1.3-1.4 up to 2.3. Equilibrium process modeling suggests that an energy reduction of 50% compared to the traditional distillation process can be obtained with the extractive distillation process.
    Original languageEnglish
    Title of host publicationProceedings of Distillation Absorption 2010; Eindhoven, The Netherlands, September 12-15 2010
    EditorsA.B. Haan, de, H. Kooijman, A. Gorak
    Place of PublicationEindhoven
    PublisherTechnische Universiteit Eindhoven
    Pages337-342
    ISBN (Print)978-90-386-2215-6
    Publication statusPublished - 2010
    Eventconference; Distillation Absorption; 2010-09-12; 2010-09-15 -
    Duration: 12 Sep 201015 Sep 2010

    Conference

    Conferenceconference; Distillation Absorption; 2010-09-12; 2010-09-15
    Period12/09/1015/09/10
    OtherDistillation Absorption

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