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Introducing 380 cSt HVFO. Fuel Specifications.

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Presentation on theme: "Introducing 380 cSt HVFO. Fuel Specifications."— Presentation transcript:

1 Introducing 380 cSt HVFO

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3 Fuel Specifications

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6 TEMPERATURE VISCOSITY DATA TEMPERATUREVISCOSITY,cSt 40 DEG C DEG C DEG C DEG C DEG C DEG C DEG C DEG C DEG C12.40

7 Economics 380 cSt : Rs /MT 180 cSt : Rs /MT Gain = Rs 555/MT Specific Heat =0.450 Kcal/Kg deg C For Max 25 deg C=0.450X25X X0.9 = 15 Units Loss = Rs 45/- per MT Net Gain =Rs 510 per MT

8 D G Set Type of Engine : 12V48/60 Engine Output/Capacity :11.81 MW Make :Man B&W,Germany RPM:500 No of Cylinders :12 Cylinder Bore :48 cm Stroke :60 cm

9 Tank Farm for D G Set MST : 850 KL( Out Going 55 deg C/Return Line 85 deg C),Water & Sludge drainage ?? Day Tank :100 KL (120 deg C,Steam heated) Electrical Heaters available More Heat may be generated from WHR Boiler

10 Tank Farm for Boilers MST :500 KL (60 deg C) Day Tank :10 KL (85 to 90 deg C) 12 KW Electrical heating

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12 Gas AD VD Reforming Visbreak. Hydrocr. Coking FCC DA Naphta Gasolines Kerosene Diesel oils Heavy fuels SR Gasolines Kero,Diesel Heavy fuels H2, no Heavy Fuels 4 Asphalts Heavy fuels REFINERY

13 Viscosity,20°C % asphaltenes Gasoline (C5-80°) Heavy gasoline (80-160°) Kerosene ( °) Middle distillate ( °) Heavy distillate ( °) Residue (400 +) ARABIAN HEAVY ARABIAN LIGHT NIGERIAN BONNY FRACTIONS FROM 3 DIFFERENT CRUDES

14 Viscosity,20 °C,cSt Sulfur,% Vanadium, ppm Nickel, ppm Asphaltenes, % Conradson carbon,% Arabian light Arabian heavy Ekofisk < Nigeria light Basrah heavy Boscan Ural CHARACTERISTICS OF SOME CRUDE OILS

15 ATMOSPHERIC DISTILLATION UNIT VACUUM DISTILLATION UNIT VISBREAKER FCC LCO HCO CRUDE OIL RESIDUE

16 The making of 380 cSt Simple Refinery with Atmospheric Distillation –Atmospheric Residue +Gasoil Fraction Complex Refinery with Catalytic Cracking & Visbreaking –Visbroken Residue + HCO + LCO

17 An Insight into 380 cSt

18 IS : SPECIFICATIONS FOR FUEL OILS Sr.N o. CharacteristicsSpecifications Method of test,Ref. to P: of IS:1448 Grade LVMV1MV2 HV 1 Acidity,Inorganic, mgKOH/gm Nil P:2 2 Ash % by mass, max.0.1 P:4 ( Method A ) 3 Gross calorific valueNot limited but to be reported ( Note 1 ) P:6 for reference and P:7 for routine 4 Relative density at 15/15°C Not limited but to be reported ( Note 2 ) P:32 5 Flash point, PMCC, °C min. 66 P:21 6 Kinematic viscosity at 50°C,cSt P:25 Above Upto Sediments,%by mass, max P:30 8 Sulphur,total,% by mass, max. ( Note 3 ) P:33 for reference and P:35 for routine 9 Water content,%by vol., max P: cSt380 cSt Note 1-: Normally the gross calorific value is of the order of 10,000 cal/g. Note 2-: Fuel oil for marine uses in diesel engines shall not exceed a limit of 0.99 Note 3-: Recognizing the necessity for low-sulphur fuel oils in some specialized uses, a lower limit may be specified by mutual agreement between the purchaser and the supplier.

19 Viscosity 380 cSt VISCOSITY - DETERMINES INJECTION AND TRANSFER TEMPERATURES NEED TO IDENTIFY IF THERE IS A NEED FOR NEW INJECTION TEMPERATURE TYPE OF UTILITY ( FURNACE/BOILER/D.G) OPTIMIMU VISCOSITY AT BURNER

20 FUELINJ VISC INJ VISC 13 CST 17 CST DECIDE THE INJECTION TEMPERATURES…………

21 THERE IS A NEED TO IDENTIFY TRANSFER TEMPERATURES IF ………………. Fuel Oil is cleaned with purifiers /Clarifiers –Transfer temperature of 98 deg C –Gravity Disc –Flow rate -Automatically induced cleaning intervals,review cleaning intervals

22 Transportation The regular tankers with PTO pump & (heating facility in winters)??

23 STORAGE Storage tank :380 cSt may be stored in the current FO tanks.The storage temperature should be above 10 deg C Settling tank :Heavy Fuel Cleaning operations starts with settling of the product in tank at elevated temperatures(Around 80 deg C).Longer the settling period & More Number of Settling tanks the better Removal of water & sludge from the settling tank prior to transfer

24 CHEMICAL COMPOSITION RESIDUE OR HEAVY FUEL OIL ASPHALTENES MALTENES "OIL" "RESINS" SATURATED AROMATIC

25 MODEL OF ASPHALTENE MOLECULE S CH2 CH3 CH2 CH3 CH CH2 CH3 CH2 CH3 CH2 S S CH3 CH2 S CH CH2 CH3 CH2 CH3 CH CH2 CH3 CH2 CH3 N CH2 CH3 CH2 CH3 CH2 O S CH CH2 CH3 CH2 CH3

26 HEAVY FUEL OILS DISPERSED AND STABLE FLOCULATED Resins ensure seperation of heavy asphaltene molecules. Flocculated Asphaltene molecules tend to form sludge and settle at the bottom of the tank.

27 COMBUSTION MECHANISM Atomisation Vaporization Combustion Viscosity Distillate cuts Density Metals Conradson Carbon C/H Ratio Ignition

28 SOOT UNBURNT PARTICLES FLAME FRONT FUEL DROPLET CENOSPHERE EMISSIONS OF PARTICLES 0.02  m 1 to 100  m LIGHT GASEOUS FRACTIONS Simple droplet combustion model SOLID ACCUMULATION

29 CARBON RESIDUE - HIGH VALUES MAY GIVE DEPOSIT PROBLEMS ASH - IF EXCESSIVE CAN GIVE FOULING DEPOSITS VANADIUM AND SODIUM - POTENTIAL HIGH TEMPERATURE CORROSION CAN BE MINIMISED BY TEMPERATURE CONTROL AND MATERIALS SELECTION ALUMINIUM AND SILICON - USUALLY PRESENT AS CATALYST FINES WHICH ARE ABRASIVE, CAN NORMALLY BE REDUCED TO AN ACCEPTABLE LEVEL BY A CENTRIFUGE SULPHUR-SULPHUR OXIDES & TBN OF OIL SEDIMENT & STABILITY - FUEL IS STABLE IF IT DOES NOT BREAK DOWN GIVING HEAVY SEDIMENT ALL OTHER PARAMETERS REMAIN IN THE NORMAL RANGE

30 TEST SIGNIFICANCE SPECIFIC ENERGY - NET VALUE FOR DIESEL AND GROSS VALUE FOR BOILERS, USUALLY CALCULATED FROM EMPIRICAL EQUATIONS IGNITION QULAITY - RELATES TO PART OF THE COMBUSTION PROCESS –FOR RESIDUAL FUELS EMPIRICAL EQUATION FOR CCAI IS –CCAI = d log log (VK ) d = DENSITY VK = VISCOSITY

31 SPECIFIC ENERGY Specific Energy (Gross) MJ/kg Qg = ( p ) [ (x+y+s)] (0.01s) Specific Energy (Net) MJ/kg Qn = ( p p10 -3 ) [1-0.01(x+y+s)] (9.420s x) p = the density at 15 °C, kg/m³ x = the water content, % (m/m) y = the ash content, % (m/m) s = the sulphur content, % m/m

32 THANK YOU


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