497
Thermal Cracking
TABLE 18.5
Product Yields and Properties from Fluid Coking Low API Gravity Feedstocks
Feedstock
LA Basin
Vacuum
Residuum
Kuwait
Vacuum
Residuum
Hawkins
Vacuum
Residuum
Tia Juana
Vacuum
Residuum
Arabian
Heavy
Vacuum
Residuum
Iranian
Heavy
Vacuum
Residuum
Bachaquero
Vacuum
Residuum
Zaca
Vacuum
Residuum
API gravity
6.7
5.6
4.2
8.5
4.4
5.1
2.6
4.7
Carbon residue a
17.0
21.8
24.5
22.0
24.4
21.4
21.4
19.0
Sulfur, wt.%
2.1
5.5
4.3
2.9
5.3
3.4
3.7
7.8
Product yields, vol.%
Naphtha (95°F–425°F, 35°C–220°C)
17.0
21.0
19.5
20.7
15.0
15.4
14.7
20.5
Gas oil (425°F–1000°F, 220°C–540°C)
62.0
48.0
53.0
48.3
47.7
55.1
48.3
61.0
Coke, % w/w
21.0
28.0
27.5
20.0
30.4
26.4
32.9
17.5
a
Conradson.