7 Economics 380 cSt : Rs 15309.83/MT 180 cSt : Rs 15864.83/MT Gain = Rs 555/MTSpecific Heat =0.450 Kcal/Kg deg CFor Max 25 deg C =0.450X25X1000860 X0.9= 15 UnitsLoss = Rs 45/- per MTNet Gain =Rs 510 per MT
8 D G Set Type of Engine : 12V48/60 Engine Output/Capacity :11.81 MW Make :Man B&W,GermanyRPM:500No of Cylinders :12Cylinder Bore :48 cmStroke :60 cm
9 Tank Farm for D G SetMST : 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 availableMore 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
18 IS : 1593 - 1982 SPECIFICATIONS FOR FUEL OILS Sr.No. Characteristics Method of test,Ref. to P: of IS:1448GradeLVMV1MV2HV1Acidity,Inorganic, mgKOH/gmNilP:22Ash % by mass, max.0.1P:4 ( Method A )3Gross calorific valueNot limited but to be reported ( Note 1 )P:6 for reference and P:7 for routine4Relative density at 15/15°CNot limited but to be reported ( Note 2 )P:325Flash point, PMCC, °C min.66P:216Kinematic viscosity at 50°C,cStP:25Above-80125180Upto3707Sediments,%by mass, max.0.25P:308Sulphur,total,% by mass, max. ( Note 3 )3.54.5P:33 for reference and P:35 for routine9Water content,%by vol., max.P:40180 cSt380 cStNote 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 0.99Note 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 cStVISCOSITY - DETERMINES INJECTION AND TRANSFER TEMPERATURESNEED TO IDENTIFY IF THERE IS A NEED FOR NEW INJECTION TEMPERATURETYPE OF UTILITY ( FURNACE/BOILER/D.G)OPTIMIMU VISCOSITY AT BURNER
21 THERE IS A NEED TO IDENTIFY TRANSFER TEMPERATURES IF ………………. Fuel Oil is cleaned with purifiers /ClarifiersTransfer temperature of 98 deg CGravity DiscFlow rate-Automatically induced cleaning intervals ,review cleaning intervals
22 The regular tankers with PTO pump & (heating facility in winters)?? TransportationThe regular tankers with PTO pump & (heating facility in winters)??
23 STORAGEStorage tank :380 cSt may be stored in the current FO tanks.The storage temperature should be above 10 deg CSettling 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 betterRemoval of water & sludge from the settling tank prior to transfer
24 RESIDUE OR HEAVY FUEL OIL CHEMICAL COMPOSITIONRESIDUE OR HEAVY FUEL OILMALTENESASPHALTENES"OIL""RESINS"SATURATEDAROMATIC
25 MODEL OF ASPHALTENE MOLECULE CH2CH3CHCHCH2CH3NCH2CH3CH3OCH2CH2CH3CH3CH2SCH2CH3CH2CHCH2SCH2CH3CH3CH3
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.
28 Simple droplet combustion model EMISSIONS OF PARTICLESSOOT0.02 mFUELDROPLETCENOSPHERE1 to 100 mUNBURNT PARTICLESFLAME FRONTLIGHT GASEOUS FRACTIONSSOLID ACCUMULATION
29 CARBON RESIDUE - HIGH VALUES MAY GIVE DEPOSIT PROBLEMS ALL OTHER PARAMETERS REMAIN IN THE NORMAL RANGECARBON RESIDUE - HIGH VALUES MAY GIVE DEPOSIT PROBLEMSASH - IF EXCESSIVE CAN GIVE FOULING DEPOSITSVANADIUM AND SODIUM - POTENTIAL HIGH TEMPERATURE CORROSION CAN BE MINIMISED BY TEMPERATURE CONTROL AND MATERIALS SELECTIONALUMINIUM AND SILICON - USUALLY PRESENT AS CATALYST FINES WHICH ARE ABRASIVE, CAN NORMALLY BE REDUCED TO AN ACCEPTABLE LEVEL BY A CENTRIFUGESULPHUR-SULPHUR OXIDES & TBN OF OILSEDIMENT & STABILITY - FUEL IS STABLE IF IT DOES NOTBREAK DOWN GIVING HEAVY SEDIMENT
30 TEST SIGNIFICANCESPECIFIC ENERGY - NET VALUE FOR DIESEL AND GROSS VALUE FOR BOILERS, USUALLY CALCULATED FROM EMPIRICAL EQUATIONSIGNITION QULAITY - RELATES TO PART OF THE COMBUSTION PROCESSFOR RESIDUAL FUELS EMPIRICAL EQUATION FOR CCAI ISCCAI = d log log (VK )d = DENSITYVK = VISCOSITY
31 SPECIFIC ENERGY Specific Energy (Gross) MJ/kg Qg = ( p2 10-6) [ (x+y+s)] (0.01s)Specific Energy (Net) MJ/kgQn = ( 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
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