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Welcome

Welcome. OPTIONS in POWER GENERATION. Industry. Power. Captive Power Plants Boilers, STGs, Auxiliaries, C&I Systems, DG. Thermal Sub-Crit: Up to 600MW Sup. Crit: 660 & 800MW Boilers, STG, Auxiliaries, ESP EPC Hydro Up to 250 MW Turbines, Generators Controls Gas Adv. Class GTs

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Welcome

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  1. Welcome

  2. OPTIONS in POWER GENERATION

  3. Industry Power Captive Power Plants Boilers, STGs, Auxiliaries, C&I Systems, DG Thermal Sub-Crit: Up to 600MW Sup. Crit: 660 & 800MW Boilers, STG, Auxiliaries, ESP EPC Hydro Up to 250 MW Turbines, Generators Controls Gas Adv. Class GTs Open Cycle, Combined Cycle Nuclear Up to 1000 MWe Power Transmission Switchgear, Transformers, Insulators, Substations, SCADA, HVDC Systems Transportation Locomotives (electric - AC/DC), Diesel-electrics, EMU's, Traction Electrics Other Products On-Shore Oil Rigs, Compressors, NCES, Desalination Plants, Valves, Motors Operating Business Areas International Operations SERVING CORE & INFRASTRUCTURE SECTORS OF THE ECONOMY

  4. BHEL’S Contribution to Indian Power Sector Practically every 3 houses out of 4 in India are supplied power, generated from BHEL sets Over 1,15,000 MW added by BHEL in domestic and international segments

  5. Steam Generators Exported Total 36

  6. Trend in unit sizes & Cycle parameters

  7. Heat balance diagram (270 MW)

  8. Rankine cycle • The Carnot Cycle is theoretically most efficient, but it is having practical difficulties. • For steam power plant, practical thermal cycle was suggested by Rankine, called Ideal cycle or Rankine cycle. T 4 1 3-3’ – BFP raises pressure from p2 to p1 3’-4 – Heating In feed heaters & economizer 4 -1 – Heating In boiler 1-2 – Work done in Turbine from p1 to p2 2-3 – Heat reduction in condenser T1 p1 3’ 2 T2 p2 3 S

  9. SH STEAM OUTLET CRH IN HRH OUT DRUM REAR ROOF FRONT ROOF REHEATER REAR FINAL SUPERHEATER REHEATER FRONT PLATEN SUPERHEATER SCW SH REAR LTSH EXT SCW SH EXTENDED WW SCW SH FRONT Economiser DOWN COMERS WATER INLET WATER WALL FRONT WATER WALL REAR WATER WALL BOTTOM RING HEADER

  10. BASIC DATA FOR DESIGN • BOILER PARAMTERS • FUEL DATA • SITE DATA

  11. FUEL ANALYSIS COAL

  12. Fuels Handled • Coal / Oil / Natural Gas in any combination • Lignite • Blast Furnace Gas / Coke Oven Gas / Corex Gas • Carbon Monoxide / Tail gas • Asphalt • Black Liquor • Bagasse • Rice Husk • Washery Rejects • Wheat / Rice straw

  13. FURNACE HEAT LOADINGS • EPRS LOADING • PLAN AREA LOADING • VOLUMETRIC LOADING • BURNER ZONE HEAT RELEASE RATE

  14. BOILER AUXILIARIES • MILL • FANS • ELECTROSTATIC PRECIPITATOR • AIRHEATERS

  15. BOWL MILLS UNDER ERECTION

  16. Bowl Mill (General Arrangement)

  17. Tube Mill Arrangement (Typical)

  18. Axial Reaction Fan (Single Stage)

  19. Axial Reaction Fan (Double Stage)

  20. Axial Fan Impulse Type (AN)

  21. Radial Fan (Double Suction)

  22. AIRPREHEATERS

  23. ELECTROSTATIC PRECIPITATOR

  24. TG FLOOR - THERMAL POWER PLANT

  25. TYPICAL STEAM & WATER CIRCUIT

  26. TYPICAL SCHEME OF AIR & GAS DUCTS / CIRCUITS COLD PA SYSTEM

  27. Once Through Supercritical Steam Generators

  28. NTPC/ BARH II STPP – 2 x 660 MW Customer National Thermal Power Corporation BARH II – 2 x 660 MW Project Contract No. U6/1700 & U6/1701 Zero Date 31.03.2008 Parameters at SHO / RHO Steam Flow 2120/1708.2 t/h. Pressure 255/54.65 kg/cm2 (g) Temperature 568 / 596 oC Fuel Coal Major Auxiliaries Mill 9 Nos. Bowl Mill, HP 1103 Airheater PAH - 2 Nos. 28.5 VI 58 (70)MR,2NOS 31.5 VI 70 (82)MR ALSTOM Supply FD Fan 2 Nos. FAF 25/11.2 – 1, Axial Reaction-TLT PA Fan 2 Nos. PAF 19/10.6 – 2, Axial Reaction-TLT 2 Nos. SAF 42.5/26.6-1, Axial Reaction-TLT ID Fan Dust Collector Not in SG Package

  29. Steam generation process

  30. T S DIAGRAM OUTPUT INCREASE D Temperature ( 0 C ) Boiling Water B C Dry Saturated Steam E 24’0c F A -273 0 Entropy KJ / Kg K Basic Rankine Cycle

  31. The Concept The mass flow rate thru’ all heat transfer circuits from Eco. inlet to SH outlet is kept same except at low loads wherein recirculation is resorted to protect the water wall system

  32. Circulation Systems Drum Type Once-through

  33. Thank You

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