2/1000kg/h of an acetone - water mixture containing 20wt% by weight of acetone is to be counter currently extracted with trichloroethane. The recovered solvent to be used is free from acetone. The water and trichloroethane are insoluble. If 90% recovery of acetone is desired estimate the number of stages required if 1.5 times the minimum solvent is used. The kg acetone/kg extract=1.65 kg water/kg raffinate. a- Repeat the calculation of A if the solvent used has purity of 98.5%. b- If co-current extractor is used instead of counter-current extractor in A and B estimate the number of stages required if equal amount of solvent used in each stage.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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2/1000kg/h of an acetone - water mixture containing 20wt% by weight of acetone is to be counter currently
extracted with trichloroethane. The recovered solvent to be used is free from acetone. The water and
trichloroethane are insoluble. If 90% recovery of acetone is desired estimate the number of stages required if 1.5
times the minimum solvent is used. The kg acetone/kg extract=1.65 kg water/kg raffinate.
a-
Repeat the calculation of A if the solvent used has purity of 98.5%.
b- If co-current extractor is used instead of counter-current extractor in A and B estimate the number of
stages required if equal amount of solvent used in each stage.
Transcribed Image Text:2/1000kg/h of an acetone - water mixture containing 20wt% by weight of acetone is to be counter currently extracted with trichloroethane. The recovered solvent to be used is free from acetone. The water and trichloroethane are insoluble. If 90% recovery of acetone is desired estimate the number of stages required if 1.5 times the minimum solvent is used. The kg acetone/kg extract=1.65 kg water/kg raffinate. a- Repeat the calculation of A if the solvent used has purity of 98.5%. b- If co-current extractor is used instead of counter-current extractor in A and B estimate the number of stages required if equal amount of solvent used in each stage.
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