PROBLEM 2 A hydrocarbon system is flashed in a drum at 325 psig and 300 K. Assume that the system obeys Raoult's Law and Antoine's equation is sufficient to model their vapor pressures. Antoine's Coefficients Component A B с Feed Composition Methane 6.6956 405.4200 267.7770 0.1300 Ethane 6.8345 663.7000 256.4700 0.1700 Propane 6.8040 803.8100 246.9900 0.3500 Butane 6.8090 935.8600 238.7300 0.2900 Pentane 6.8763 1075.7800 233.2050 0.0600 Antoine's equation is given by: B log psat (mmHg) = A-; T (°C) +C a. Calculate the bubble P and dew P of the said feed mixture. b. Determine the composition of the vapor and liquid streams and the fraction of feed vaporized. c. If the feed rate is 1000 mol/h, what are the flowrates of the liquid and vapor streams?
PROBLEM 2 A hydrocarbon system is flashed in a drum at 325 psig and 300 K. Assume that the system obeys Raoult's Law and Antoine's equation is sufficient to model their vapor pressures. Antoine's Coefficients Component A B с Feed Composition Methane 6.6956 405.4200 267.7770 0.1300 Ethane 6.8345 663.7000 256.4700 0.1700 Propane 6.8040 803.8100 246.9900 0.3500 Butane 6.8090 935.8600 238.7300 0.2900 Pentane 6.8763 1075.7800 233.2050 0.0600 Antoine's equation is given by: B log psat (mmHg) = A-; T (°C) +C a. Calculate the bubble P and dew P of the said feed mixture. b. Determine the composition of the vapor and liquid streams and the fraction of feed vaporized. c. If the feed rate is 1000 mol/h, what are the flowrates of the liquid and vapor streams?
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
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Transcribed Image Text:PROBLEM 2
A hydrocarbon system is flashed in a drum at 325 psig and 300 K. Assume that the system obeys
Raoult's Law and Antoine's equation is sufficient to model their vapor pressures.
Antoine's Coefficients
B
405.4200
663.7000
803.8100
Component
Methane
Ethane
Propane
Butane
Pentane
A
6.6956
6.8345
6.8040
6.8090
6.8763
Antoine's equation is given by:
935.8600
1075.7800
log psat (mmHg) = A -
с
267.7770
256.4700
246.9900
238.7300
233.2050
B
T (°C) + C
Feed
Composition
0.1300
0.1700
0.3500
0.2900
0.0600
a. Calculate the bubble P and dew P of the said feed mixture.
b. Determine the composition of the vapor and liquid streams and the fraction of feed
vaporized.
c. If the feed rate is 1000 mol/h, what are the flowrates of the liquid and vapor streams?
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Step 1: Determine(a)Bubble and dew point pressure(b)Composition of vapor liquid streams(c)Feed rate of L,V
VIEWStep 2: Calculate vapor pressure of each component.
VIEWStep 3: Calculate bubble point pressure.
VIEWStep 4: Calculate dew point pressure.
VIEWStep 5: Calculate mass transfer coefficients for each component.
VIEWStep 6: Calculate feed composition at vapor and liquid streams.
VIEWStep 7: Calculate vapor and liquid compositions for each component.
VIEWStep 8: Calculate the vapor (V) and the liquid (L) flow rates .
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