(4d) Do High Activity Coefficients in Vapor Liquid Systems Mean Higher Interfacial Concentrations?
AIChE Spring Meeting and Global Congress on Process Safety
2013
2013 Spring Meeting & 9th Global Congress on Process Safety
Kister Distillation Symposium 2013
Session In Honor Of Tak Yanagi
Monday, April 29, 2013 - 11:10am to 11:35am
There is some experimental evidence that the interfacial concentrations of compounds with high activity coefficients are different at the interface than they are in the bulk given enough time to settle out. Data for alcohol/water separations from a stagnant film ten to either contradict the principle of VLE or imply that high interfacial concentrations develop at equilibrium that differ from the average or bulk. The paper will examine these data and pose the question, is turbulence actually deleterious in the efficiency of separation of volatile non ideal compounds?
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