Boiler (Steam Generator
[LEFT]
[B][I][U][F**T="]Boiler (Steam Generator)[/F**T][/U][/I][/B] -The boiler for 1,094 t/h MCR is Single Drum Radiant Natural Circulati** Boiler “ELPASO” Type which has self-drainable heating surface. The unit is of pressurized furnace design with two regenerative air heaters, two forced draught fans and two flue gas recirculati** fans. The boiler c**sists of the following equipment. [B][I][COLOR=black]Steam drum [/COLOR][/I][/B] [B][I]Water wall [/I][/B] [B][I]Primary Superheater, Sec**dary Superheater and Tertiary Superheater [/I][/B] [B][I]Reheater [/I][/B] [B][I]Attemperators [/I][/B] [B][I]Ec**omizer [/I][/B] [B][I]Two forced draft fans [/I][/B] [B][I]Two gas recirculati** fans [/I][/B] [B][I]Two regenerative air heaters [/I][/B] [B][I]Two steam coil air heaters [/I][/B] [B][I]Ducts and flues [/I][/B] [B][I]Gas and oil burner system [/I][/B] [B][I]Steel structure [/I][/B] [B][I]Piping and valves [/I][/B] [B][I]Other auxiliary equipments[/I][/B] [CENTER][URL="http://2.bp.blogspot.com/_CZnqYQLLQtc/TSDqJpQyTxI/AAAAAAAAAHs/ys-76Xg9TNg/s1600/boiler.JPG"][IMG]http://2.bp.blogspot.com/_CZnqYQLLQtc/TSDqJpQyTxI/AAAAAAAAAHs/ys-76Xg9TNg/s400/boiler.JPG[/IMG][/URL][/CENTER] -The boiler and its auxiliaries are designed suitable for firing Natural Gas and back-up Mazout and for the following c**diti**s:- [B][I][U]Ec**omizer inlet to drum inlet : 203 bar(g) [/U][/I][/B] [B][I][U]Water wall : 204 bar(g) [/U][/I][/B] [B][I][U]Drum and superheater : 201 bar(g) [/U][/I][/B] [B][I][U]Reheater : 47 bar(g)[/U][/I][/B] [B][I][U]Superheater outlet : 541 °C 181.1 bar(g) [/U][/I][/B] [B][I][U]Ec**omizer inlet : 275.8 °C 194.9 bar(g) [/U][/I][/B] [B][I][U]Reheater outlet : 541 °C 37.6 bar(g) [/U][/I][/B] [B][I][U]Reheater inlet : 328.6 °C 38.9 bar(g)[/U][/I][/B] [COLOR=black][F**T=Arial]-Superheater outlet steam Temperature is c**trolled to c**stant ****** the load range from 50% turbine to 100%BMCR by spray attemperati**.[/F**T][/COLOR] [COLOR=black][F**T=Arial]-The reheater outlet temperature is c**trolled to c**stant ****** the load range from 50% turbine to 100% BMCR by flue gas recirculati**. The reheater spray attemperati** for reheat c**trol is used **ly as an emergency measure during periods of load changes or of low feedwater temperature due to heater outage, or at overloads.[/F**T][/COLOR] [COLOR=black][F**T=Arial]-The main specificati**s of the boiler are:-[/F**T][/COLOR] [B][I][U]Type of boiler Babcock - Hitachi [/U][/I][/B] [B][I][COLOR=black] [U]Single Drum, Radiant, Natural Circulati** Boiler [/U][/COLOR][/I][/B] [B][I][U]Evaporati** (BMCR) : 1,094.4 t/h [/U][/I][/B] [B][I][U]Steam Pressure at SH outlet : 181.1 bar(g) [/U][/I][/B] [B][I][U]Steam Temperature at SH outlet : 541 °C [/U][/I][/B] [B][I][U]Feed water Temperature : 275.8 °C [/U][/I][/B] [B][I][U]Reheat Steam Flow : 941.4 t/h [/U][/I][/B] [B][I][U]Steam Pressure at RH outlet : 37.6 bar(g) [/U][/I][/B] [B][I][U]Steam Temperature at RH outlet : 541 °C [/U][/I][/B] [B][I][U]Steam Temperature at RH inlet : 328.6 °C [/U][/I][/B] [B][I][U]Ambient Air Temperature : 34.8 °C [/U][/I][/B] [B][I][U]Draught system : Forced draught [/U][/I][/B] [B][I][U][COLOR=black][F**T=Arial]Fuel : N.Gas, Mazout Oil[/F**T][/COLOR][/U][/I][/B] [B][COLOR=black][F**T="]That was a small descripti** of the boiler from (HITACHI BABCOK Company.), Used at Thermal Power Stati**, the next Post I will talk about each system of the Boiler.[/F**T][/COLOR][/B] [/LEFT] |
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