A liquid mixture containing 45.0% benzene (B) and 55.0% toluene (T) by mass is fed to a distillation column. The overhead (vapor) product stream contains 95.0 mole% B. The bottom (liquid) product stream contains 8.0 % of the benzene fed to the column. The feed stream flowrate is 2000 kg/hr. The column operates at steady state. a) Draw a labeled diagram depicting the process. Label all streams and unknown variables. b) Choose an appropriate basis. c) Perform a degree of freedom (DOF) analysis on the column. Clearly write down all material balance equations, implicit and explicit equations you have been given to solve the problem. ii. Calculate DOF based on number of unknown variables and number of equations. Can you solve the problem? d) What is the composition (in mass fractions) of the bottom product stream? Calculate the composition of the feed stream in terms of both mole fractions and mass fractions of e) benzene and toluene. f) Check your result with the un-used material balance.

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
icon
Related questions
Question

Material Balances question 

A liquid mixture containing 45.0% benzene (B) and 55.0% toluene (T) by mass is fed to a distillation column.
The overhead (vapor) product stream contains 95.0 mole% B. The bottom (liquid) product stream contains
8.0 % of the benzene fed to the column. The feed stream flowrate is 2000 kg/hr. The column operates at steady
state.
a) Draw a labeled diagram depicting the process. Label all streams and unknown variables.
b) Choose an appropriate basis.
c) Perform a degree of freedom (DOF) analysis on the column.
Clearly write down all material balance equations, implicit and explicit equations you have
been given to solve the problem.
ii.
Calculate DOF based on number of unknown variables and number of equations. Can you
solve the problem?
d) What is the composition (in mass fractions) of the bottom product stream?
Calculate the composition of the feed stream in terms of both mole fractions and mass fractions of
e)
benzene and toluene.
f) Check your result with the un-used material balance.
Transcribed Image Text:A liquid mixture containing 45.0% benzene (B) and 55.0% toluene (T) by mass is fed to a distillation column. The overhead (vapor) product stream contains 95.0 mole% B. The bottom (liquid) product stream contains 8.0 % of the benzene fed to the column. The feed stream flowrate is 2000 kg/hr. The column operates at steady state. a) Draw a labeled diagram depicting the process. Label all streams and unknown variables. b) Choose an appropriate basis. c) Perform a degree of freedom (DOF) analysis on the column. Clearly write down all material balance equations, implicit and explicit equations you have been given to solve the problem. ii. Calculate DOF based on number of unknown variables and number of equations. Can you solve the problem? d) What is the composition (in mass fractions) of the bottom product stream? Calculate the composition of the feed stream in terms of both mole fractions and mass fractions of e) benzene and toluene. f) Check your result with the un-used material balance.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 10 steps with 11 images

Blurred answer
Knowledge Booster
Steady state model
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The