Article

Modified Ponchon-Savarit and McCabe-Thiele methods for distillation of two-phase feeds

Industrial & Engineering Chemistry Process Design and Development 04/1984; 23(1):1-6. DOI: 10.1021/i200024a001

ABSTRACT Modified versions of the Ponchon-Savarit and McCabe-Thiele methods are presented which incorporate a correct analysis of the feed region in the case of partly vaporized feeds. The methods proposed are fully graphical, require no additional information or calculations, and do not complicate significantly the traditional procedures. It is shown that for optimal effect, the liquid and vapor parts are introduced to separate but contiguous stages. Numerical examples confirm that a small improvement in column performance is achieved, but the influence on the number of stages or reflux ratio required for a given separation is negligible, except in very special cases.

2 Bookmarks
 · 
667 Views

Full-text

View
180 Downloads
Available from
May 30, 2014