4. A flash chamber operating at 50 °C and 200 kPa is separating 1,000 kg moles/hr of a feed that is 30 mol % propane, 10 mol % n-butane, 15 mol % n-pentane, and 45 mol % n-hexane. Find the product compositions and flow rates. K-values for each chemical can be obtained using following equation. Constants for fitting are given in the attached table.
4. A flash chamber operating at 50 °C and 200 kPa is separating 1,000 kg moles/hr of a feed that is 30 mol % propane, 10 mol % n-butane, 15 mol % n-pentane, and 45 mol % n-hexane. Find the product compositions and flow rates. K-values for each chemical can be obtained using following equation. Constants for fitting are given in the attached table.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:4. A flash chamber operating at 50 °C and 200 kPa is separating 1,000 kg moles/hr of a feed that is
30 mol % propane, 10 mol % n-butane, 15 mol % n-pentane, and 45 mol % n-hexane. Find the
product compositions and flow rates. K-values for each chemical can be obtained using following
equation. Constants for fitting are given in the attached table.
= ari/T° +a7z/T+a7& +a, In p+a,2/p° +a„3/P
TABLE 2-3. Constants for fit to K values using Eq. (2-30)
Mean
Error
Сompound
Methane
-292,860
-600,076.875
8.2445
-8951
59.8465
1.66
Ethylene
7.90595
-84677 42.94594 0
2.65
Ethane
-687,248.25
7.90694
-88600
49.02654 0
1.95
Propylene
Propane
-923,484.6875 0
7.71725
-87871 47.67624 0
1.90
-970,688.5625 0
7.15059
-76984 0
6.90224
2.35
Isobutane
-1,166,846
7.72668
-92213 0
2.52
n-Butane
-1,280,557
7.94986
-96455 0
3.61
Isopentane -1,481,583
n-Pentane
7.58071
-93159 0
4.56
-1,524,891
7.33129
-89143 0
4.30
n-Hexane
-1,778,901
6.96783
-.84634 0
4.90
n-Heptane -2,013,803
6.52914
-.79543 0
6.34
n-Octane
-7646.81641 12.48457 -73152 0
7.58
n-Nonane
-2,551,040
5.69313
-67818 0
9.40
n-Decane
-9760.45703 13.80354 -71470 0
5.69
Note: Tis in R, and p is in psia
Source: McWilliams (1973)
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