T (s) 14 25 29 30 27 24 25 12 CA0, mol/dm³ 200 190 180 170 150 140 120 110 CA. mol/dm³ 100 90 80 70 50 40 20 10
T (s) 14 25 29 30 27 24 25 12 CA0, mol/dm³ 200 190 180 170 150 140 120 110 CA. mol/dm³ 100 90 80 70 50 40 20 10
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
question a) already being answered as in the picture. i want to understand how to get answered for question b)
a) Using data from Table 2, suggest the best single flow reactor (either CSTR or PFR) for 85% conversion when the feed rate consists of 100 mol/dm3 of n-pentane. Justify your answer (answer in pic)
b) If two-reactor scheme to be installed in the system, proposed the best reactorarrangement for the same conversion in (a) that give optimum condition. Justifyyour answer. Hint: Determine the concentration of reactant between stages at minimum reaction rate (please explain how to answer b)
Transcribed Image Text:Step 1
Given:
T (s)
14
25
29
30
27
24
25
12
CA0, mol/dm³
200
190
180
170
150
140
120
110
CA. mol/dm³
100
90
80
70
50
40
20
10
Conversion is 85%, feed rate is 100 mol/dm³
Step 2
а)
Design equation for MFR Reactor:
T=Vv=CA0XA-ra=Cao-Ca-rat=Vu=CAOXA-rA=CA0-CA-rA
Design equation for PFR Reactor:
T=w=CaofXaodXa-ra=-ScACAodca-tat=Vu=CA0SOXAfdXA-rA=-SCAOCAfdCA-rA
where,
VUCAOCA-rat======volume of reactor feed rateinitial concentrationfinal concentrationr
ate of reactionspace timeV=volume of reactor u=feed rateCAO=initial concentrationCA=fin
al concentration-rA=rate of reactiont=space time
T (s)
CAO, mol/dm³
14
25
29
30
27
24
25
12
200
190
180
170
150
140
120
110
CA, mol/dm³
100
90
80
70
50
40
20
10
Rate, -rA,
7.142857
4
3.448276 3.333333 3.703704 4.166667
4
8.333333
mol/dm³ s
V.MFR, dm³
2380
4037.5
4437
4335
3442.5
2856
2550
1122
V, PFR, dm³
2380
4037.5
4437
4335
3442.5
2856
2550
1122
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