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Calculation of a distillation column.htm

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  • Brian Poke
    Calculation of a distillation column Calculation of a distillation column Here the number of plates which are necessecary for a certain separation problem can
    Message 1 of 1 , May 4, 2001
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      Calculation of a distillation column
       

      Calculation

      of a

      distillation

      column

      Here the number of plates which are necessecary for a certain separation problem can be calculated. The ideal separation factor alpha*12 is calculated from vapour pressures obtained by the Antoine equation. The activity coefficients are calculated with the van Laar equation. The ideal separation factor and the parameters of the van Laar equation are assumed to be temperature independent. The equations used can be looked up in text books on unit operations such as the book of Schl├╝nder and Thurner or the book of McCabe, Smith and Harriott.

      choose a mixture:

      input of the mole fraction of the feedxfeed=
      input of the mole fraction of the bottom productxbottom=
      input of the mole fraction of the overhead productxtop=
      reflux rate; don't start with a too low valuev=
      type of feed:
      cool feedq>1
      feed at bubble point (saturated liquid)q=1
      feed partially vapour0<q<1
      feed at dew point (saturated vapor)q=0
      feed superheated vaporq<0
      q=
      amount of feedF=

      If the system has an azeotrope between the mole fraction of the top or the bottom or if the reflux rate is too low you will get an error message in the ASCII-output of the program.


      You can view the results on a result page.

        


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