Page 97 - Fluid Catalytic Cracking Handbook

74 Fluid Catalytic Cracking Handbook

TOTAL

The TOTAL correlations calculate aromatic carbon content, hydrogen
content, molecular weight, and refractive index using routine laboratory
tests. The TOTAL correlations are listed below and are also in Appen-
dix 3, Example 2-2 illustrates the use of TOTAL correlations.

Example 2-2

Molecular Weight (MW)

0 0978
MW = 0.0078312 x (SG)" ' x (AP °C) OJ238 x (VABP °C) L6971
0 1238
0 0978
MW = 0,0078312 x (0.913)" ' x (88.9) * x {455) L6971
MW = 446

Refractive Index (RI) @ 20°C (68°F)

ao 44
1 2058
RI f20) = 1 + 0.8447 x (SG) ' x (VABP °K)-°' 0557 x (MW)~ °
1 2058
0 0557
RI (20> = 1 + 0.8447 x (0.913) ' x (728.2)" ' x (446y° M44
RI (20) =1.5105

Refractive Index (RI) @ 60°C (140°F)

0 0007
RI (60) = 1 + 0.8156 x (SG) L2392 x (VABP °K)' a0576 x (MW)' '
0 0576
0 0007
RI (60) = 1 + 0.8156 x (0.913) L2392 x (728.2)" ' x (446)" '
Rl {60) = 1.4963

Hydrogen (H 2) Content, wt%

H 2 = 52.825 - 14.26 x RI (20) - 21.329 x (SG) - 0.0024 x

(MW) - 0.052 x (S) + 0.757 x In (v)

H, = 52.825 - 14.26 x 1.5105 - (21.329 x 0.913) - (0.0024 x