Page 94 - Fluid Catalytic Cracking Handbook

FCC Feed Characterization 71

(VABP + 460) 1/3
KUOP
SG
w A un (T(10%) + T(30%) + T(50%) + T(70%) + T(90%))
V AJar = :

/3 3
= £(F vi xTB! )

Where:

MeABP = Mean Average Boiling Point, °F
SG = Specific Gravity at 60°F (see Equation 2-1)
CABP = Cubic Average Boiling Point, °F
VABP = Volumetric Average Boiling Point, °F
MABP = Molar Average Boiling Point, °F
= Mole Fraction of Component i
f mj
TBj = Normal boiling point of pure component i, °F
= Volume fraction of component i
f vj
T = Temperature, °F

Table 2-8
Variation of C^C P as a Function of K uop Factor*

Sample No, K uop Factor C A + C N (wt%) C N/C P
1 11.70 46 0.47
2 11.69 45 0.44
3 11.70 46 0.44
4 11.67 45 0.43
5 11.70 45 0.39
6 11.70 44 0.35
7 11.70 42 0,33

*The K factor relates well to aromatics + naphthenes, but not to naphthenes.
Source: Andreasson [10]