A mixture containing 30.0% benzene (B), 25.0% toluene (T) and 45.0% o-xylene (O) is loaded into a distillation unit, with two columns in series. In the first column, the composition of the residue should be: T = 1.0%, O = 99.0% and the recovery of o-xylene in the residue will be 98.0%. The distillate of this column is loaded with a second distillation column, whose distillate contains 99.0% B, 1.0% T. It is desired to recover in the distillate of this second column, 96.0% of the benzene present in the load of the first column. If the load on the first column is 1000.0 kg/h: (NOTE:% by mass). a) Draw the process flow chart correctly indicating all currents. b) Calculate all unknown mass flow rates and their compositions.
A mixture containing 30.0% benzene (B), 25.0% toluene (T) and 45.0% o-xylene (O) is loaded into a distillation unit, with two columns in series. In the first column, the composition of the residue should be: T = 1.0%, O = 99.0% and the recovery of o-xylene in the residue will be 98.0%. The distillate of this column is loaded with a second distillation column, whose distillate contains 99.0% B, 1.0% T. It is desired to recover in the distillate of this second column, 96.0% of the benzene present in the load of the first column. If the load on the first column is 1000.0 kg/h: (NOTE:% by mass). a) Draw the process flow chart correctly indicating all currents. b) Calculate all unknown mass flow rates and their compositions.
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
Section: Chapter Questions
Problem 1.1P
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A mixture containing 30.0% benzene (B), 25.0% toluene (T) and 45.0% o-xylene (O) is loaded into a distillation unit, with two columns in series. In the first column, the composition of the residue should be: T = 1.0%, O = 99.0% and the recovery of o-xylene in the residue will be 98.0%.
The distillate of this column is loaded with a second distillation column, whose distillate contains 99.0% B, 1.0% T.
It is desired to recover in the distillate of this second column, 96.0% of the benzene present in the load of the first column. If the load on the first column is 1000.0 kg/h: (NOTE:% by mass).
a) Draw the process flow chart correctly indicating all currents.
b) Calculate all unknown mass flow rates and their compositions.
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