2) Benzene-Toluene Separations. We wish to separate benzene from toluene in a sieve-plate distillation column with a total condenser and a partial reboiler. There are two feed streams: Feed Flowrate (mol/hr) Thermal State saturated vapor saturated liquid The column designed is intended to provide a bottoms product that is 4% (mol) benzene and the ZE 0.36 1 300 700 0.72 distillate should be 94% (mol) benzene. Notes: The reflux ratio is equal to (1.0) and the feeds are to be input at their optimum location(s). Consider two column designs and the second in which the feeds are combined into a single stream (you will need to calculate/estimate the feed q condition!) and sent into a column. • Equilibrium data for benzene-toluene at atmospheric pressure is available. You may also identify / use other experimental data (web sources, library) for this system. --- one in which each feed enters at the most appropriate stage/location a) What are the flowrates of the distillate and bottoms products? For a two feed design: b) What are the liquid and vapor flowrates in the stripping and rectification sections of the column? c) What are the flowrates of liquid and vapor on stages between the two feed points? d) Determine the number of equilibrium stages required for the separation. e) Label the two feed stages. For a single feed column design: f) What and how are you estimating the q-value for the combined feed, your q-value is? g) What are the liquid and vapor flowrates in the stripping and rectification sections of the column? h) Determine the number of equilibrium stages required for the separation.
2) Benzene-Toluene Separations. We wish to separate benzene from toluene in a sieve-plate distillation column with a total condenser and a partial reboiler. There are two feed streams: Feed Flowrate (mol/hr) Thermal State saturated vapor saturated liquid The column designed is intended to provide a bottoms product that is 4% (mol) benzene and the ZE 0.36 1 300 700 0.72 distillate should be 94% (mol) benzene. Notes: The reflux ratio is equal to (1.0) and the feeds are to be input at their optimum location(s). Consider two column designs and the second in which the feeds are combined into a single stream (you will need to calculate/estimate the feed q condition!) and sent into a column. • Equilibrium data for benzene-toluene at atmospheric pressure is available. You may also identify / use other experimental data (web sources, library) for this system. --- one in which each feed enters at the most appropriate stage/location a) What are the flowrates of the distillate and bottoms products? For a two feed design: b) What are the liquid and vapor flowrates in the stripping and rectification sections of the column? c) What are the flowrates of liquid and vapor on stages between the two feed points? d) Determine the number of equilibrium stages required for the separation. e) Label the two feed stages. For a single feed column design: f) What and how are you estimating the q-value for the combined feed, your q-value is? g) What are the liquid and vapor flowrates in the stripping and rectification sections of the column? h) Determine the number of equilibrium stages required for the separation.
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:2) Benzene-Toluene Separations. We wish to separate benzene from toluene in a sieve-plate distillation
column with a total condenser and a partial reboiler. There are two feed streams:
Feed Flowrate (mol/hr)
ZE
Thermal State
saturated vapor
0.72 saturated liquid
The column designed is intended to provide a bottoms product that is 4% (mol) benzene and the
1
300
0.36
2
700
distillate should be 94% (mol) benzene.
Notes:
The reflux ratio is equal to (1.0) and the feeds are to be input at their optimum location(s).
Consider two column designs
and the second in which the feeds are combined into a single stream (you will need to calculate/estimate
the feed q condition!) and sent into a column.
Equilibrium data for benzene-toluene at atmospheric pressure is available.
You may also identify / use other experimental data (web sources, library) for this system.
one in which each feed enters at the most appropriate stage/location
---
a) What are the flowrates of the distillate and bottoms products?
For a two feed design:
b) What are the liquid and vapor flowrates in the stripping and rectification sections of the column?
c) What are the flowrates of liquid and vapor on stages between the two feed points?
d) Determine the number of equilibrium stages required for the separation.
e) Label the two feed stages.
For a single feed column design:
f) What and how are you estimating the q-value for the combined feed, your q-value is?
g) What are the liquid and vapor flowrates in the stripping and rectification sections of the column?
h) Determine the number of equilibrium stages required for the separation.
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