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Fuel system,pptx

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Fuel oil handling system in Power Plant

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Fuel system,pptx

  1. 1. Fuel Oil System By Vineet Garg Deputy Manager(Operation)
  2. 2. Fuel oil used in APMLLight Diesel Oil(LDO)Heavy Fuel Oil(HFO)
  3. 3. Properties of Fuel Oil Properties Light Diesel Oil Heavy Fuel OilSulphur(%) 1.8 4.5Ash Content(%) 0.02 0.1Relative Density at 15 oC 0.86-0.90 0.9782Pour Point (oC max) 3(winter)/15(summer) 24Kinematic Viscosity (centistokes) 2.5 to 15.7 (@ 38oC) 370 (@50 oC)Water(Volume %) 0.1 1.0Gross Calorific Value(Kcal/Kg,avg) 10600 10800Flash Point(oC min) 66 66
  4. 4. Fuel Oil Handling System Unloading through Unloading Pumps Storing in Storage Tanks Transferring to Day oil Tanks
  5. 5. HFO Handling System Storage System Transferring System HFO Storage Tank  HFO Day oil Tank  Total No.s :2  Total Nos :2  Volume : 3000 m3  Volume : 200 m3  Diameter : 19.0 m  Dimeter : 7.5 m  Height : 12.0 m  Height : 5.5 m HFO Unloading Pump :  HFO Transfer Pump  Total No.s :3  Total No.s :2  Capacity : 50 m3/h  Capacity : 55 m3/h  Head : 35.0 MLC  Head : 18 MLC
  6. 6. 100 m3/hr, 35 oC HFO Handling System HFO Storage HFO Tank 1 Day Tank 3000 m3 1 200 m3 FT HFO Storage 4x100% 2x100% HFO HFO Tank 2 Strainer transfer pump Day Tank 3000 m3 2 6x100% 3x50% HFO 200 m3 Strainer Unloading Pumps10 neoprene rubber Unloading hoses
  7. 7. Boiler HFO System HFO Pressurizing Pump  HFO Cooler  Flow:57m3/h  HFO Flow:55m3/h  Head:330mH2O  inlet oil temperature : 120℃  Outlet oil temperature :70℃ HFO Heater  HFO Flow:55m3/h  Drain Oil Tank  Inlet oil temperature:70oC  Capacity:5m3  Outlet oil temperature: 120℃ Coarse Filter  Drain Oil Pump  Flow:55m3/h  Flow:10 m3/h,  100meshes/in2  Head:48 mH2O  Condensate Flash tank: 6 m3
  8. 8. Boiler HFO System FT HFO Day BC Elevation Tank 1 200 m3 PCV HOTV Auxiliary steam HFODay Tank Fine Filter FT 2 Coarse filter HFO Pump To drain flash200 m3 Condenser HORV Auxiliary steam Cooling Water From CCCW Pump HFO Heaters PCV
  9. 9. HFO System InterlocksS.No. Equipment Set Points1 HFO Unloading pump pr. High 3.7 Kg/cm22 HFO Unloading Pump Disch Pr. Low 0.5 Kg/cm23 HFO Tank level 11.56 HH,11.46 H, 0.96 L,0.86 LL4 HFO Storage oil Tank Temperature 37oC H,33oC L5 Suction pipe outlet/ Day Tank Temp. 60oC(L) to 70oC(H)6 HFO Transfer pump Disch Pr. High 2.5 Kg/cm27 HFO Transfer pump Disch Pr Low 0.5 Kg/cm28 Day tank level 5.155 HH, 5.055 H, 0.305 L,0.205 LL9 Differential Pr across Strainer High 0.2 Kg/cm2(unloading strainer) / 0.1 Kg/cm2(Transfer strainer)
  10. 10. LDO Handling SystemStorage System Transferring System LDO Storage Tank  LDO Day Tank  Total Nos : 3  Out of 3 storage tank 2 tanks can be used as LDO  Volume : 700 m3 day oil tank with  Diameter : 10.5 m arrangement of inter  Height :9m transfer. LDO Unloading Pump  LDO Transfer Pump  Total Nos : 3  Total Nos : 2  Capacity : 50 m3  Capacity : 21 m3  Head : 25 MLC  Head : 20 MLC
  11. 11. LDO Handling System5 neoprene rubber LDO Storage Unloading hoses Tank 1 700 m3 4x100% Strainer 100 m3/hr FT LDO Storage Tank 2 700 m3 6x100% 3x50% HFO Strainer Unloading Pumps LDO Storage Tank 3 700 m3
  12. 12. Boiler LDO System LDO Coarse Filter  Flow:21m3/h  100 meshes/in2 LDO Pressurizing Pump  Flow:21m3/h  Head:360mH2O
  13. 13. Boiler LDO System FT LDO Day Tank 1 BC Elevation 700 m3 PCV LOTV LDO Fine Filter Day Tank 2 Coarse filter LDO Pump FT 700 m3 LORV Compressed AirLDO storageTank 700 m3 PCV
  14. 14. LDO System Interlocks S.No. Equipment Set Point1 LDO Unloading pump pr. High 2.1 Kg/cm22 LDO Unloading Pump Disch Pr. Low 0.5 Kg/cm23 LDO Tank level 8.55 HH, 8.45 H, 0.45 L , 0.35 LL4 LDO Storage oil Tank Temperature 38oC H,33oC L6 LDO Transfer pump Disch Pr. High 3.0 Kg/cm27 LDO Transfer pump Disch Pr Low 0.5 Kg/cm29 Differential Pr across Strainer High 0.1 Kg/cm2(unloading strainer) / 0.15 Kg/cm2(Transfer strainer)
  15. 15. FOPH Drainage System Drain oil Tank  Oil and Water Separator Pit  Capacity: 5 m3  Recovery oil Punp Drain oil pumps  Total no.s : 2  Total no.s :2  Capacity: 10 m3/h  Capacity : 10 m3/h  Head : 36 MLC  Head : 48 MLC  Waste Water Pump Oily water pump  Total no.s : 2  Total no.s :2  Capacity : 20 m3/h  Capacity :10 m3/h  Head : 35 MLC  Head : 16 MLC  Condensate Flash Tank  Capacity : 6 m3
  16. 16. Fuel oil pump house Drainage System From HFO heaters, tank trace heaters, line trace heaters aux steam drain To HFO Storage Tank local area drain For reusing to Drain oil pumpsDrain oil from HFO system pumps and strainer HFO Drain oil Tank Capacity(10 m3)Drain oil from LDO system pumps and strainer Aux steam drain to flash tank Recovery oil Waste water pumps pumps Oily water pumps Flash FOPH Drain pit Oily water from tanker Stilling Baffel wall to prevent oil escape Tank Capacity(10 m3) unloading, Storage tank Chamber oil dyke Oil & water separator tank
  17. 17. Drainage system interlocks S.No. Equipment Set Point1 Radar type Drain Tank level transmitter 0-1.5m 1.2m H 0.6m L2 Pressure indicator at discharge of each pump 0 to 6 Kg/cm23 Pressure Switch at discharge of each pump Low 0.5 Kg/cm24 Pressure Switch at common dich. Header Low 0.5 Kg/cm25 Temperature Transmitter 0-120 oC 32 oC L 38 oC H6 Solenoid Valves at steam inlet of floor coil heater Air fails to close type
  18. 18. Thank you

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