1. No category

Homework #5 Imaginethatyouhavebeenhiredtoworkata150,000bpdrefinery.You’vebeenaskedtoestimate
theperformanceoftheFCCUforprocessingthetotalgasoilfortheFradecrudeoil(i.e.,allofthe
atmosphericandvacuumgasoils).
1. Whatisthetotalgasoilvol%yieldfromthecrudeoil?Whatisthegasoilwt%yield?
2. HowmanybpdFCCUfeedwillbeavailable?
3. Forthisgasoilfeed,whatare:
 theAPI&specificgravities?
 WatsonKfactor?
 sulfurcontent[wt%]?
 viscosity(cSt)@275°F?
4. AssumethattheFCCUwillbeoperatedat60%conversionusingzeolitecatalyst.Usingthe
appropriatefiguresinthetextbookdeterminetheyieldstructure&qualityofthefollowing
FCCUproducts:
 n‐butane(NC4):bpd&wt%sulfurcontent.
 iso‐butane(IC4):bpd&wt%sulfurcontent.
 butylenes(C4=asisobutylene):bpd&wt%sulfurcontent.
 gasoline(C5+):bpd&wt%sulfurcontent.
 LightCycleOil(LCO):bpd&wt%sulfurcontent.
 HeavyCycleOil(HCO):bpd&wt%sulfurcontent.
 Coke:lb/day&wt%sulfurcontent.
5. Assumethatthecokeproducediscompletelyburnedintheregenerator.HowmuchSO2is
produced(lb/day)?
CBEN409Fall2014
‐1‐
October15,2014
FradeCrudeOil–SummaryofMajorCuts
Whole
Light
Medium
Heavy
Crude
Naphtha
Naphtha
Naphtha
TBP Temp At Start, °F
Start
55
175
300
TBP Temp At End, °F
End
175
300
0.7
1.8
Yield at Start, vol%
Yield at End, vol%
Kero
Atm
Light
Heavy
Vacuum
Gas Oil
VGO
VGO
Resid
400
500
650
850
1050
400
500
650
850
1050
End
5.9
11.0
18.9
33.6
56.7
75.3
100.0
1.8
5.9
11.0
18.9
33.6
56.7
75.3
Gravity, °API
19.8
81.5
52.8
41.3
32.8
26.6
18.6
15.2
6.2
Sulfur, wt%
0.71
0.05
0.06
0.11
0.30
0.59
0.77
0.85
0.96
10
13
2
1
0
1
1
11
299
2660
4839
10267
16.1
14.5
14.2
13.6
12.7
11.8
11.5
Mercaptan Sulfur, ppm
Nitrogen, ppm
4376
Hydrogen, wt%
Viscosity @ 40 °C (104 °F), cSt
76.69
0.44
0.66
1.06
1.95
5.29
65.01
2.17E+03
3.E+07
Viscosity @ 50 °C (122 °F), cSt
47.56
0.41
0.59
0.92
1.65
4.14
38.04
8.54E+02
5.E+06
Viscosity @ 100 °C (212 °F), cSt
9.08
0.32
0.41
0.57
0.88
1.64
6.37
4.09E+01
1.E+04
Viscosity @ 135 °C (275 °F), cSt
4.37
0.28
0.35
0.46
0.66
1.06
2.98
1.24E+01
1.E+03
Freeze Point, °F
97
-199
-166
-136
-109
-82
-20
36
134
Pour Point, °F
-44
-210
-178
-149
-121
-90
-26
30
199
Smoke Point, mm (ASTM)
4
32
27
21
16
11
6
3
2
Aniline Point, °F
153
159
118
112
116
127
150
169
185
Total Acid Number, mg KOH/g
1.0
0.0
0.2
0.6
1.2
1.9
0.7
0.7
0.7
29
33
40
Cetane Index, ASTM D4737
Diesel Index
30
130
62
46
38
34
28
26
12
11.6
12.6
11.6
11.4
11.3
11.3
11.3
11.6
11.7
Research Octane Number, Clear
72.5
65.5
37.5
Motor Octane Number, Clear
70.6
63.8
Paraffins, vol%
83.8
33.0
27.4
16.3
Naphthenes, vol%
16.2
57.2
53.1
54.9
0.0
9.8
18.4
25.7
102
114
137
168
215
307
447
826
Characterization Factor (K Factor)
Aromatics, vol%
Thiophenes, vol%
Molecular Weight
339
Heptane Asphaltenes, wt%
2.5
9.3
Micro Carbon Residue, wt%
6.0
21.0
Ramsbottom Carbon, wt%
5.5
19.2
Vanadium, ppm
21
76
Nickel, ppm
11
41
Iron, ppm
2
9
CBEN409Fall2014
‐2‐
October15,2014