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1.1: Performance Metrics for Separation Processes

  • Page ID
    76358
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    \(n_{i,k}^{(F)}\) = mass or molar flow rate of species \(i\) entering separator \(k\) in feed stream (mass time-1 or mol time-1)

    \(n_{i,k}^{(1)}\) = mass or molar flow rate of species \(i\) leaving separator \(k\) in first product stream (mass time-1 or mol time-1)

    \(n_{i,k}^{(2)}\) = mass or molar flow rate of species \(i\) leaving separator \(k\) in second product stream (mass time-1 or mol time-1)

    \({\rm SF}_{i,k}\) = split fraction for species \(i\) in separator \(k\) (dimensionless)

    \({\rm SR}_{i,k}\) = split ratio for species \(i\) in separator \(k\) (dimensionless)

    Separator1.jpeg

    \[ \tag{1.1} {\rm SF}_{i,k} = n_{i,k}^{(1)} / n_{i,k}^{(F)}\]

    \[ \tag{1.2} {\rm SR}_{i,k} = n_{i,k}^{(1)}/n_{i,k}^{(2)} = {\rm SF}_{i,k} / (1-{\rm SF}_{i,k})\]

    Example

    For the process below, compute the split fraction and the split ratio for \(i C_5 H_{12}\). Designate the overhead stream as product stream 1.

    Separator2.jpeg


    This page titled 1.1: Performance Metrics for Separation Processes is shared under a CC BY-NC 4.0 license and was authored, remixed, and/or curated by Monica Lamm and Laura Jarboe (Iowa State University Digital Press) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.