The feed to a continuous two-column still consists of a mixture of 30% benzene (B), 55% toluene (T), and 15% xylene (X). The overhead stream from the 1st column is analyzed and contains 94.4%B, 4.54%T and 1.06%T. The bottoms from the 1st column is fed to the 2nd column. In this 2nd column, it is planned that 92% of the original T charged to the unit shall be recovered in the overhead stream and that the T shall constitute 94.6% of the stream. It is further planned that 92.6% of the X charged shall be recovered in the bottoms from this column and that the X shall constitute 77.6% of that stream. If these conditions are met, calculate: (a) analysis of each stream leaving the unit; (b) percentage recovery of benzene and toluene in the overhead stream from the 1st column.
The feed to a continuous two-column still consists of a mixture of 30% benzene (B), 55% toluene (T), and 15% xylene (X). The overhead stream from the 1st column is analyzed and contains 94.4%B, 4.54%T and 1.06%T. The bottoms from the 1st column is fed to the 2nd column. In this 2nd column, it is planned that 92% of the original T charged to the unit shall be recovered in the overhead stream and that the T shall constitute 94.6% of the stream. It is further planned that 92.6% of the X charged shall be recovered in the bottoms from this column and that the X shall constitute 77.6% of that stream. If these conditions are met, calculate: (a) analysis of each stream leaving the unit; (b) percentage recovery of benzene and toluene in the overhead stream from the 1st column.
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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Transcribed Image Text:4. The feed to a continuous two-column still consists of a mixture of 30% benzene (B), 55% toluene (T),
and 15% xylene (X). The overhead stream from the 1st column is analyzed and contains 94.4%B,
4.54%T and 1.06%T. The bottoms from the 1st column is fed to the 2nd column. In this 2nd column, it is
planned that 92% of the original T charged to the unit shall be recovered in the overhead stream and
that the T shall constitute 94.6% of the stream. It is further planned that 92.6% of the X charged shall be
recovered in the bottoms from this column and that the X shall constitute 77.6% of that stream. If these
conditions are met, calculate:
(a) analysis of each stream leaving the unit;
(b) percentage recovery of benzene and toluene in the overhead stream from the 1st column.
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