Rapid assessment of thermally coupled distillation.

Author(s) : FINN A. J.


Many techniques, commonly used in low temperature plants, can be used at or above ambient temperature to reduce the energy consumption of distillation systems: double effect distillation, heat pumping, use of multiple columns for a single distillation. The one method that has not been applied so much, though it has a great potential is "thermal coupling" (the distillation system uses thermal coupling between columns so that they are linked directly by process streams). But lack of simple and reliable design methods is probably the major reason why thermal coupling has not been applied outside of low temperature processing. In fact, the familiar Fenske-Underwood-Gilliland method is as valid for thermally coupled columns as it is for conventional distillation. The method given in the paper is appropriate to the separation of any mixture of more than two components. J.V.


  • Original title: Rapid assessment of thermally coupled distillation.
  • Record ID : 1996-0683
  • Languages: English
  • Publication date: 1994/07
  • Source: Source: LTEC, Londres
    21 p.; 9 fig.; 8 ref.
  • Document available for consultation in the library of the IIR headquarters only.