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1、Coal-FiredPowerPlantThecoalistransportedfromthestoragetothecoalgrindingmillsbywayoftransportsystemswhereitisgroundtofinestcoaldust.Bywayofhotair,thedustisblownintothecombustionchamberofthesteamgenerator.Inthepipingsystemofthesteamgenerator,thewaterisconvertedtosteamathighp
2、ressures.Thesteamdrivestheturbinewhichinturnpowerstheconnectedgenerator.Thesteamis,afterithasexpendeditsenergyintheturbine,liquifiedinthecondenseratambienttemperature.Thiswaterisreturnedtothesteamgeneratorovertheheaterandthesupplypumps.Thecoolingwatercircuitisusedtotransmi
3、ttheheatfromthecondensertotheatmosphere.Therequiredcoolingwaterisusuallyextractedfromarivertobedischargedtotheriverafterheatingupbyc.10to15K.Ifthewarmingcapacityoftheriverisinsufficient,thenthedischargedheatcanbetransmittedtotheairinpartorcompletelybywayofacoolingtower.Dur
4、ingthecombustionofcoal,productsasaresultofcombsutionsresult(C02,S02,N0x,ash,slag,gypsum).Initially,thenitrogenoxidescontainedinthefluegasarereducedinacatalyser.Subsequently,thefluegasismadedustfreeinanelectrofiltertobeadditionallycleanedinafluegasdesulpherisationplant.Thea
5、shremovedfromthesteamgeneratorandtheelectrofiltercanbeusedintheconstrucionindustry.ThesearethemainpartsofthepowerplantCombustionmaterial(coaling,oilforthestartupandsupportingburner)Residueremoval(ashremoval,slagremoval,gypsumtreatment)Watersupply(rawwatertreatment,fulldesa
6、lination)Conventionalheatgeneration(steamgeneration)Water-/SteamcircuitMainmachineused(steamturbine,generator)MaincoolingwatersystemWatertreatment1.WaterSteamSystemPrppppppPPPPPPPROCESSDESCRIPTIONProcessDescriptionThesocalledfeedwateristhemaintoolinthepowerplant.Itisrouted
7、thrpoughaclosedcircuit,(steamturbine-condenser-feedwaterpump-steamgenerator-steamturbine).Thefollowingdescribesthecircuitprocess:Thefeedwaterwhichislocatedinthepipesystemofthesteamgeneratorcondenseswiththeheatofthefurnace.Fromthereitisroutedunderhightermperatures/pressures
8、(upto540°C/250bar,)tothesteamturbineblades.Themechanicalrotorenergyisconvertedintoelectri
