flow diagram based
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
Related questions
Question
explain the flow diagram based on the feed run

Transcribed Image Text:CWOUT
CONDENSE
PREHEAT
S10
COLFEED
OVHD
OUTPH
CWIN
FEED
SEP
OUTCOND
COLUMN
VENT
LSEP
RDRUM
TO COLUMN
B
R
S1
TOTAL
Figure 6. Aspen Plus process flow diagram.

Transcribed Image Text:Figure 5. Temperature profiles; total reflux; simulation and experimental.
An Aspen Plus simula-
tion is developed to model
the process. An Aspen "Radfrac stripper" model (reboiler but
no condenser) is used for the column. Aspen "HeatX" models
Feed run
The experimental values that were specified for input data
are used for the feed preheater and condensers. The NRTL
physical property package is used. The process flow diagram
is given in Figure 6.
to the simulation are listed below.
1. Adjusted feed flowrate = 1.631 kmol/h
138
Chemical Engineering Education
2. Adjusted feed composition = 0.2191 mole fraction
methanol
6. Cooling water flowrate = 0.433 kg/min
7. Cooling water inlet temperature = 5.8 °C
3. Feed tank temperature = 20°C
8. Partial reboiler stage efficiency = 100%
4. Bottoms flowrate = 1.286 kmol/h
9. Stage efficiency 65%
5. Reflux flowrate = 0.464 kmol/h
All of the other variables are calculated by the model. Table 4
compares experimental and simulation results.
The agreement is quite good. Figure 3 com-
pares the temperature profiles.
Table 4
Comparison of experimental and simulation results; feed run
Experiment
Simulation
Total reflux run
mf methanol
0.965
0.956
How to set up a total reflux simulation is not
completely obvious. The Aspen Plus "Radfrac"
model requires feed and product streams, but
these are all zero under total reflux operation.
The reflux flowrate is set at the experimental
value (0.8343 kmol/h). Efficiency is set at 65%.
mf methanol
0.022
0.021
QPH
kW
1.473
1.547
Qew
kW
5.938
6.797
kW
16.40
9.404
Tovhd
°C
66.3
65.8
A small feed flowrate (0.01 kmol/h) is
specified with composition 0.211 mole fraction
Treflux
°C
50.6
46.9
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps

Knowledge Booster
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…
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…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY

Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall

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…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY

Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall


Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning

Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The