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LUBRICANT&LUBRICATION. Crude Oil GasolineKeroseneFuel OilOil Lubricant H.C. Oil Wax Aromatic S & N Contaminant Hydrocracking Catalitic Treatment 1000-3000.

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Presentation on theme: "LUBRICANT&LUBRICATION. Crude Oil GasolineKeroseneFuel OilOil Lubricant H.C. Oil Wax Aromatic S & N Contaminant Hydrocracking Catalitic Treatment 1000-3000."— Presentation transcript:

1 LUBRICANT&LUBRICATION

2 Crude Oil GasolineKeroseneFuel OilOil Lubricant H.C. Oil Wax Aromatic S & N Contaminant Hydrocracking Catalitic Treatment psi 430 – 550 C H.C. Lube Oil Additives n-Parafin

3 Chemical Additives 1. Oxidation Inhibitor (O) 2. Rust Inhibitor (R) 3. Anti Wear & Extreme Pressure (EP) 4. Friction Modifier (W ) 5. Detergent & Dispersant (D) 6. Pour-point Depressant (P) 7. Foam Inhibitor (F) 8. Viscosity Index Improver (VI)

4 Tabel hal. 25

5 Synthetic Oil Hydrocarbon Poly Alpha-Olefins (PAOs)

6 Viscosity Y X U F Newtonian Fluid  =  dU/dy h F/A =  U/h  = (F/A) / (U/h)  = Shear Stress / Shear Rate

7  = Absolute Viscosity (Dyne.s/cm2 - Poise) v = Kinematic Viscosity v =  /  (Stoke – St) (cSt – mm2/s)  = Density (grm/cm3) Saybolt Universal Seconds (SUS)

8 Tabel hal, 28

9 Viscosity vs Temperature log. log (v + 0.7) = A – B log T T = Temperature v = Kinematic viscosity A, B = Constants – given oil

10

11 Vogel Equation  = Viscosity-Temp. Coeff

12 Viscosity Index

13 L = Viscosity (40C) dari zero-VI oil H = viscosity (40C) dari 100-VI oil U = vsicosity (40C) dari Unkown-oil

14 ASTM Y = Viscosity cSt(100 C) unkown oil

15 Viscosity vs Pressure  = Pressure-viscosity Coeff.

16 Roelands Equation C = konstanta – unit (196.1 MPa atau psi) Z = 0.6 = 0.4 – 0.8 synthetic oil


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