Separation of azeotropic mixtures of alcohols and water with FricDiff

B. Breure, E.A.J.F. Peters, P.J.A.M. Kerkhof

    Research output: Contribution to journalArticleAcademicpeer-review

    7 Citations (Scopus)
    2 Downloads (Pure)

    Abstract

    FricDiff is an energy efficient separation process based on a difference in transport velocities of the components of a gas or vapor mixture when they diffuse through a sweep gas ('enhancer'). The separation process takes place inside the pores of a non-selective macro-porous barrier. In this paper the separation of a 2-propanol-water mixture with the FricDiff-principle is studied, using CO2 as the enhancer. A detailed numerical model is developed that describes the separation process that takes place inside a cylindrical FricDiff-unit. In this unit the vapor mixture to be separated and the sweep gas flow at opposite sides of a porous barrier in a counter current mode. Through the porous barrier selective mass transport of components of the feed mixture through the sweep gas takes place resulting in a separation. The model takes into account axial velocity profiles as a result of laminar flow of the gas and vapor mixtures through the flow channels, radial concentration gradients and radial velocities. The transport through the porous barrier is described with the Binary Friction Model. The influences of process conditions and the characteristics of the porous barrier on the separation process are studied. (C) 2008 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)349-362
    JournalSeparation and Purification Technology
    Volume62
    Issue number2
    DOIs
    Publication statusPublished - 2008

    Fingerprint

    Alcohols
    Water
    Gases
    Vapors
    2-Propanol
    Propanol
    Channel flow
    Laminar flow
    Flow of gases
    Macros
    Numerical models
    Mass transfer
    Friction

    Cite this

    @article{43eacbf4f27847d9b6c93deb1a4a81aa,
    title = "Separation of azeotropic mixtures of alcohols and water with FricDiff",
    abstract = "FricDiff is an energy efficient separation process based on a difference in transport velocities of the components of a gas or vapor mixture when they diffuse through a sweep gas ('enhancer'). The separation process takes place inside the pores of a non-selective macro-porous barrier. In this paper the separation of a 2-propanol-water mixture with the FricDiff-principle is studied, using CO2 as the enhancer. A detailed numerical model is developed that describes the separation process that takes place inside a cylindrical FricDiff-unit. In this unit the vapor mixture to be separated and the sweep gas flow at opposite sides of a porous barrier in a counter current mode. Through the porous barrier selective mass transport of components of the feed mixture through the sweep gas takes place resulting in a separation. The model takes into account axial velocity profiles as a result of laminar flow of the gas and vapor mixtures through the flow channels, radial concentration gradients and radial velocities. The transport through the porous barrier is described with the Binary Friction Model. The influences of process conditions and the characteristics of the porous barrier on the separation process are studied. (C) 2008 Elsevier B.V. All rights reserved.",
    author = "B. Breure and E.A.J.F. Peters and P.J.A.M. Kerkhof",
    year = "2008",
    doi = "10.1016/j.seppur.2008.01.029",
    language = "English",
    volume = "62",
    pages = "349--362",
    journal = "Separation and Purification Technology",
    issn = "1383-5866",
    publisher = "Elsevier",
    number = "2",

    }

    Separation of azeotropic mixtures of alcohols and water with FricDiff. / Breure, B.; Peters, E.A.J.F.; Kerkhof, P.J.A.M.

    In: Separation and Purification Technology, Vol. 62, No. 2, 2008, p. 349-362.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Separation of azeotropic mixtures of alcohols and water with FricDiff

    AU - Breure, B.

    AU - Peters, E.A.J.F.

    AU - Kerkhof, P.J.A.M.

    PY - 2008

    Y1 - 2008

    N2 - FricDiff is an energy efficient separation process based on a difference in transport velocities of the components of a gas or vapor mixture when they diffuse through a sweep gas ('enhancer'). The separation process takes place inside the pores of a non-selective macro-porous barrier. In this paper the separation of a 2-propanol-water mixture with the FricDiff-principle is studied, using CO2 as the enhancer. A detailed numerical model is developed that describes the separation process that takes place inside a cylindrical FricDiff-unit. In this unit the vapor mixture to be separated and the sweep gas flow at opposite sides of a porous barrier in a counter current mode. Through the porous barrier selective mass transport of components of the feed mixture through the sweep gas takes place resulting in a separation. The model takes into account axial velocity profiles as a result of laminar flow of the gas and vapor mixtures through the flow channels, radial concentration gradients and radial velocities. The transport through the porous barrier is described with the Binary Friction Model. The influences of process conditions and the characteristics of the porous barrier on the separation process are studied. (C) 2008 Elsevier B.V. All rights reserved.

    AB - FricDiff is an energy efficient separation process based on a difference in transport velocities of the components of a gas or vapor mixture when they diffuse through a sweep gas ('enhancer'). The separation process takes place inside the pores of a non-selective macro-porous barrier. In this paper the separation of a 2-propanol-water mixture with the FricDiff-principle is studied, using CO2 as the enhancer. A detailed numerical model is developed that describes the separation process that takes place inside a cylindrical FricDiff-unit. In this unit the vapor mixture to be separated and the sweep gas flow at opposite sides of a porous barrier in a counter current mode. Through the porous barrier selective mass transport of components of the feed mixture through the sweep gas takes place resulting in a separation. The model takes into account axial velocity profiles as a result of laminar flow of the gas and vapor mixtures through the flow channels, radial concentration gradients and radial velocities. The transport through the porous barrier is described with the Binary Friction Model. The influences of process conditions and the characteristics of the porous barrier on the separation process are studied. (C) 2008 Elsevier B.V. All rights reserved.

    U2 - 10.1016/j.seppur.2008.01.029

    DO - 10.1016/j.seppur.2008.01.029

    M3 - Article

    VL - 62

    SP - 349

    EP - 362

    JO - Separation and Purification Technology

    JF - Separation and Purification Technology

    SN - 1383-5866

    IS - 2

    ER -