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Design and Control Comparison of Alternative Separation Methods for n ‐Heptane/Isobutanol
Author(s) -
Luyben William L.
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201600576
Subject(s) - azeotrope , isobutanol , heptane , extractive distillation , distillation , chemistry , chromatography , condenser (optics) , uniquac , fractionating column , separation process , fractional distillation , controllability , pentane , process (computing) , thermodynamics , organic chemistry , mathematics , non random two liquid model , computer science , activity coefficient , light source , physics , aqueous solution , optics , operating system , ethanol
The binary mixture of n ‐heptane and isobutanol forms an azeotrope at atmospheric pressure, with a composition of 66.9 mol % n ‐heptane and a temperature of 364 K. Several methods of separation are possible. This study compares the steady‐state economics and the dynamic controllability of three alternative separation techniques: a two‐column extractive distillation process, a two‐column pressure‐swing distillation process, and a single column with a refrigerated condenser.