Non ratio Constraints | RHS (ton/day) | Marginal value ($/t) | MRTS | Elasticity |
HDS feed rate (H1) | 1720 | 65 | −0.790 | −0.105 |
HCCS production (F4) | 720 | 60 | −0.094 | −0.005 |
LCO production (F5) | 600 | 64 | −0.051 | −0.002 |
VACRES & VR tank (B1) | 324 | 79 | −1.400 | −0.002 |
Alkylation feed rate (A1) | 504 | 134 | 0.000 | 0.000 |
VGO production (G1) | 1080 | 16.9 | 0.005 | 0.063 |
Ratio Constraints | RHS | Marginal value ($/˚C or ppm/t) | MRTS | Elasticity |
CDU HGO initial cut point (P2) | 305˚C | 0.04 | −11.49 | −0.091 |
FCC preheat (P3) | 210˚C | 0.02 | −0.001 | −0.044 |
VGO HDS sulfur target (P4) | 0.4 %wt | 2.14 | −0.016 | −0.001 |