A liquid stream, containing 45% benzene (B) and 55% toluene (T) by mass is fed to a distillation column. A product stream, leaving the top of the column contains 95% mole B, and the bottom product contains 8% of the benzene in the feed (so, 92% of the benzene in the feed will leave with the top product). The volumetric flow rate of the feed is 2000 L/h and the specific gravity of feed stream is 0.872. a) Determine the mass flow rate of all streams. b) Determine the mass fraction of components at the top and bottom streams. c) After conducting mass balance, fill Table 1. Table 1: Summary of the mass and molar quantities in all streams in the distillation column example. Flow rates Compositions Mass flow rate Molar flow rate Mass fraction Molar Streams (kg/h) (kmol/h) (kg/kg) fraction (kmol/kmol) В Total В Total В В T 1 (Feed) (Тoр) (Bottom)
A liquid stream, containing 45% benzene (B) and 55% toluene (T) by mass is fed to a distillation column. A product stream, leaving the top of the column contains 95% mole B, and the bottom product contains 8% of the benzene in the feed (so, 92% of the benzene in the feed will leave with the top product). The volumetric flow rate of the feed is 2000 L/h and the specific gravity of feed stream is 0.872. a) Determine the mass flow rate of all streams. b) Determine the mass fraction of components at the top and bottom streams. c) After conducting mass balance, fill Table 1. Table 1: Summary of the mass and molar quantities in all streams in the distillation column example. Flow rates Compositions Mass flow rate Molar flow rate Mass fraction Molar Streams (kg/h) (kmol/h) (kg/kg) fraction (kmol/kmol) В Total В Total В В T 1 (Feed) (Тoр) (Bottom)
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:A liquid stream, containing 45% benzene (B) and 55% toluene (T) by mass is fed to a distillation
column. A product stream, leaving the top of the column contains 95% mole B, and the bottom
product contains 8% of the benzene in the feed (so, 92% of the benzene in the feed will leave
with the top product). The volumetric flow rate of the feed is 2000 L/h and the specific gravity of
feed stream is 0.872.
a) Determine the mass flow rate of all streams.
b) Determine the mass fraction of components at the top and bottom streams.
c) After conducting mass balance, fill Table 1.
Table 1: Summary of the mass and molar quantities in all streams in the distillation column
example.
Flow rates
Compositions
Mass flow rate
Molar flow rate
Mass fraction
Molar
Streams
(kg/h)
(kmol/h)
(kg/kg)
fraction
(kmol/kmol)
В
T
Total
В
Total
В
T
В
T
1
(Feed)
(Тор)
3
(Bottom)
Step algorithm to conduct mass balance:
1. Basis of calculations
2. Flowchart
3. Problem statement
4. Unify units/Simplify flowchart
5. df analysis
6. Solve for unknowns
7. Check solutions
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