ASTM dist:
50 % recovered at 464
F min; 657 deg F max
90 % recovered at 615
F min
FBP 725
F max
Diesel index 54 min
All the diesel stream and the remaining LVGO will be blended to meet this
product spec. Some desulfurized kerosene may be added if required to make up
gravity or distillation spec. The diesel index, pour point, and flash point are easily
met. Viscosity spec will also be checked.
The sulfur and pour point specification checks are shown in Table 43.
Distillation:
ASTM distillation of the blend is calculated to give the results in Table 44.
This meets the spec required.
The viscosity check is shown in Table 45.
Index of blend = 4,725 Ä 100 = 47.25, with a corresponding viscosity = 4.8 cSt
which meets spec.
This completes the blend recipe calculation for the automotive diesel product.
Gas oil – (Heating oil)
Specification:
SG at 60
F 0.840–0.860
Flash pt
F 150 min
Distillation ASTM:
10 % vol Rec at 400
F min
50 % vol Rec at 475
F max
Table 43 Diesel blending specification check
BPCD
lbs/Gal
MM lbs/CD
Pour point
F
% wt S
Gas oil
655
7.163
0.197
15
0.35
Diesel
8,101
6.98
2.374
0
0.31
Total
8,756
6.7
2.572
<15
0.313
Table 44 Diesel product
distillation check
% vol
Temp,
F
0
460
10
515
30
540
50
561
90
615
FBP
685
118
D.S.J. Jones and S.A. Treese