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外文翻译--25MW高效秸秆燃烧发电厂.doc

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外文翻译--25MW高效秸秆燃烧发电厂.doc

25MWSTRAWFIRED,HIGHEFFICIENCYPOWERPLANT1AIMTHEAIMOFTHEPROPOSEDPROJECTHASBEENTODESIGN,CONSTRUCT,OWNANDOPERATEANEWELECTRICITYGENERATIONCAPACITYBASEDONRENEWABLEENERGYSOURCES,INTHISCASEONSTRAW,WITHTHEPOSSIBILITYOFADDINGWOODCHIPS,WITHASOUNDTECHNOLOGICALANDECONOMICALBASISTHEOWNER,EHN,EXPECTSTHISPROJECTTOPROMOTETHEIMPLEMENTATIONOFITSFUTURESTRATEGIESANDPLANSINITSFIELDSOFACTIVITYBIOENERGYCROPSAREALREADYBEINGINVESTIGATEDATDEMONSTRATIONSCALEASAFUELALTERNATIVE,ALSOFROMTHEPOINTOFVIEWOFTECHNOLOGICALDEVELOPMENT,THEAIMHASBEENTODEMONSTRATETHEINNOVATIVETECHNICALSOLUTIONS,HIGHEFFICIENCYSTEAMBOILERWITHHIGHSTEAMTEMPERATUREFORWOODANDSTRAWFIRINGWITHNEWSUPERHEATERCONSTRUCTION,TOSOLVESLAGGINGANDCORROSIONPROBLEMSUPTONOWRELATEDTOCOMBUSTIONOFSTRAWTHESUCCESSFULDEMONSTRATIONHASCREATEDANDWILLCREATENEWPROJECTANDJOBOPPORTUNITIESBYOFFERINGAVIABLESOLUTIONTOEXPLOITDIFFICULTBIOMASSFUELSWHICHCURRENTLYARETREATEDMOSTLYASWASTE2INTRODUCTIONPHOTO1VIEWOFTHESANGESAPOWERPLANTWITHSTRAWBARNONTHERIGHT,ANDBOILERBUILDINGONTHELEFTTHEPOWERPLANTISANELECTRICITYGENERATIONFACILITYBASEDONRENEWABLEENERGY,WHICHSUPPLIESANETAMOUNTOF25MWOFELECTRICITYTOTHEGRIDANADDITIONALPOWERPRODUCTIONOFABOUT25MWOFELECTRICITYISGENERATEDFORCONSUMPTIONINTHEOWNOPERATIONSYSTEMSOFTHEPLANT,ANDHEATPRODUCTIONISNOWADAYSRELEASEDATTHECONDENSINGSYSTEM,WHICHISCOOLEDBYAWATERINTAKEFROMANIRRIGATIONCHANNELOFTHEIRATIRIVERTHEPLANTOPERATIONAVAILABILITYISEXPECTEDTOBE8000HOURS/YEAR,WHICHLEADSTOANANNUALELECTRICITYPRODUCTIONOF200GWHTHEPLANTISLOCATEDATTHEINDUSTRIALAREAOFROCAFORTE,NEARTHELOCALITYOFSANGESA,INTHEREGIONOFNAVARRA,SPAINTHETECHNOLOGYISBASEDONANINNOVATIVEBIOMASSBOILER,TOGETHERWITHACONVENTIONALSTEAMCIRCUITANDSTEAMTURBINEPROCESSTHECORETECHNOLOGYISLOCATEDINTHEBOILER,WHICHINCLUDESNOVELHANGINGPLATENSUPERHEATERSFORTHESTEAM,SPECIFICALLYDESIGNEDWITHSPECIALMATERIALSANDSHAPESFORMINIMIZINGCORROSIONONTHEIRSURFACEITALSOINCLUDESAVIBRATINGHYDROGRATEMADEOFTWODIFFERENTSECTIONS,ANDANINNOVATIVEFEEDINGSYSTEMDESIGN,INCLUDINGSAFETYDEVICESFORFIREPREVENTIONTHEWHOLEBOILERANDFEEDINGSYSTEMISANIMPROVEDDESIGNOFTHETECHNOLOGICALPARTNER,THEDANISHCOMPANYFLSMILJASFUEL,THEPLANTISINITIALLYDESIGNEDFORUSINGONLYSTRAW100,ANDALSOMIXTURESOFWOODCHIPSANDSTRAWUPTO50INHEATVALUESATTHEMOMENT,ONLYTHEINVESTMENTSINFACILITIESANDLOGISTICSFORSTRAWHAVEBEENCARRIEDOUT,BUTENOUGHSPACEISAVAILABLEFORTHECONSTRUCTIONOFANADDITIONALBARNANDFEEDINGSYSTEMSFORWOODCHIPSANNUALFUELCONSUMPTIONOFTHEPLANTIS160000TONS/YEAROFSTRAW,MAINLYOFWHEAT,BARLEYANDCORN,ALLOFWHICHISCOLLECTEDALLAROUNDTHEREGIONLOGISTICSFORFUELCOLLECTIONINTHEFIELDS,HANDLING,TRANSPORTANDSTORAGEINCLUDELONGTERMCONTRACTSWITHFARMERSANDSERVICECOMPANIESINORDERTOPROVIDETHEWHOLEANNUALSUPPLYTHEPLANTFIRSTCONNECTIONTOTHEGRIDWASACHIEVEDON25THJUNE2002AFTERSEVERALOPERATIONTESTSTHEPLANTHASREACHEDFULLLOADOPERATION,ANDRESULTSARECOMPLETELYSUCCESSFUL3TECHNICALDESCRIPTIONBOILERTHESTRAWANDWOODFIREDBOILERISANIMPROVEDFLSMILJDESIGNITINCLUDESAVIBRATINGHYDROGRATESPECIALLYDEFINEDFORHANDLINGTHESPECIFICQUALITYOFTHESTRAWTOBEBURNTTHEGRATEISMADEINTWOSECTIONSTHATENABLETHEUSEOFSTRAWORAMIXTUREOFWOODANDSTRAWASFUEL,HAVINGLOWASHMELTINGTEMPERATUREANDDIFFICULTSINTERINGORSLAGGINGPROPERTIESTHESTRAWISFEDTOTHEBOILERTHROUGHFOURMECHANICALFEEDOPENINGSTHETRANSPORTATIONOFTHEBURNINGMASSANDTHEASHTHROUGHTHEGRATEISMADEBYTHEASHREMOVALSYSTEM,WHICHPERIODICALLYVIBRATES,DURINGAFEWSECONDSEVERY5MINUTESTHECYCLEOFVIBRATIONANDTHEINTERVALSAREADJUSTEDDURINGTHECOMMISSIONINGOFTHEBOILERDEPENDINGONTHEQUALITYOFTHESTRAWTHEGRATEITSELFISMADEASABOILERPANELWALL,INCLUDINGPERFORATIONSFORINPUTOFTHECOMBUSTIONAIRTHISTYPEOFGRATEHASVERYLOWMAINTENANCECOSTSANDHIGHRELIABILITYPHOTO2BOILER,TURBINEANDOFFICESBUILDINGSASHTHATFALLSDOWNFROMTHEGRATEISTHENTRANSPORTEDTOACONTAINER,ANDTHEFLYASHISCOLLECTEDINTHEBAGFILTERTHEREMAININGPARTICLECONTENTINTHEFLUEGASESISLESSTHAN50MG/NM3FROMTHEBAGFILTERASHHOPPERS,THEASHISCONVEYEDTOAFLYASHCONTAINERBOTHTHEBOTTOMANDFLYASHESAREBEINGREUSEDASORGANICFERTILISERSTHEHOTFLUEGASESARELEDTOTHEHANGINGPLATENSUPERHEATERSINSIDETHEBOILERANDTHENTOTHESECONDPASS,WHERETHEFEEDWATERECONOMIZERANDCOMBUSTIONAIRPREHEATERSARELOCATEDECONOMIZERANDAIRPREHEATINGAREUSEDTOCOOLTHEFLUEGASESDOWNTOAPPROXIMATELY130CBEFORERELEASINGTHEMTHROUGHTHESTACKINTOTHEATMOSPHERESUPERHEATERSTHENEWSTRAWFIREDHANGINGPLATENSUPERHEATERSINCREASETHESTEAMTEMPERATUREUPTO540CDIRECTLYWITHTHESTRAWCOMBUSTIONGASESINSIDETHEBOILERDUETOTHERAPIDHIGHTEMPERATURECORROSIONCAUSEDBYTHEALKALINECONTENTSOFTHESTRAWASH,THESUPERHEATERSHAVEBEENCAREFULLYDESIGNED,USINGRESISTANTMATERIALS,ANEXACTDESIGNINCLUDINGTHEAPPROPRIATEADDITIONALSURFACEAREAFORHEATEXCHANGE,ANDCOMPLETELYELIMINATINGTHEUSEOFNATURALGASOROTHERFUELSFORSUPERHEATINGTHESTEAMARESEARCHPROJECTWITHTHEPUBLICUNIVERSITYOFNAVARRAISALSOUNDERGOING,AIMINGATANALYSINGNEWMATERIALSFORTHESESUPERHEATERSSTEAMCYCLETHEPOWERPLANTPROCESSISDESIGNEDFORHIGHELECTRICALEFFICIENCYTHISISACCOMPLISHEDBYUSINGTHECONDENSATEANDFEEDWATERPREHEATING,“INTERNALCOGENERATION”THEHIGHPRESSUREANDTEMPERATURESTEAM100BAR,540CISFEDFROMTHEBOILERTOTHEEXTRACTIONCONDENSINGSTEAMTURBINESTEAMISEXTRACTEDFROMTHESTEAMTURBINEFORPREHEATINGINFOURUNCONTROLLEDEXTRACTIONSTHEEXHAUSTSTEAMFROMTHETURBINEISCONDENSEDINACONDENSERUSINGRIVERWATERASCOOLINGMEDIUMFROMTHECONDENSERTHECONDENSATEISRETURNEDTHROUGHTHEPREHEATINGSTAGESTOTHEFEEDWATERTANKANDFURTHERTOTHEBOILERFORSTEAMGENERATIONFIGURE1PROCESSDIAGRAMTURBINEGENERATORTHESTEAMTURBINEISOFEXTRACTIONCONDENSINGTYPEITHASACAPACITYOF30MWATTHETERMINALSOFTHEALTERNATORWITHANAUXILIARYPOWERCONSUMPTIONOFNEARLY25MW,THEAVERAGENETELECTRICALOUTPUTIS25MWTHEALTERNATOROUTPUTVOLTAGEIS10KVTHEPLANTISCONNECTEDTOTHE66KVGRIDTHROUGHABLOCKTRANSFORMERSEPARATEAUXILIARYTRANSFORMERSAREUSEDTOFEEDTHEAUXILIARYPOWERFORPLANT’SOWNPOWERCONSUMPTION4PERFORMANCEOFTHEPLANTBEFORESTARTINGTHEPLANTOPERATION,STRAWCOLLECTIONANDSTORAGEINTHEFIELDSTARTEDINSUMMER2000CAMPAIGNSOFYEARS2001AND2002WEREUSEDTOFINETUNINGTHELOGISTICSACTIVITIESANDINCREASINGTHEAMOUNTOFSTOREDSTRAWTHEPLANTFIRSTCONNECTIONTOTHEGRIDWASACHIEVEDON25THJUNE2002,WHICHMEANTTHESTARTOFTHECOMMISSIONINGANDMONITORINGPHASESINCETHEN,SEVERALTESTSANDADJUSTMENTSHAVEBEENMADE,INCLUDINGTHEGRADUALPOWERINCREASEUNTILFULLLOADWASREACHEDATTHEBEGINNINGOF2003INJULY2003THEPLANTISSTILLADJUSTINGITSPRODUCTIONPARAMETERS,ANDFULLCOMMERCIALOPERATIONWILLSTARTAFTERSUMMERDURINGTHEFIRSTWHOLEYEAROFOPERATIONATTESTINGLEVELFROMJUNE2002TOMAY2003,THEPLANTHASCONSUMEDANAMOUNTEQUIVALENTTO99124TONSOFSTRAWWITH11OFMOISTURE,ANDTHECORRESPONDINGELECTRICITYSUPPLIEDATTHEUTILITYSUBSTATIONHASBEEN11894GWHTHEEFFICIENCYWILLBEIMPROVEDTO200GWH/AWITH160000TONSOFSTRAWONCECOMMERCIALOPERATIONWILLBEREACHEDTHEPROPOSEDRENEWABLEENERGYPROJECTHASACLEARLYPOSITIVEIMPACTONTHEENVIRONMENTINTHEREGION,ASITREPLACESELECTRICITYWHICHWOULDOTHERWISEBEPRODUCEDWITHFOSSILFUELS,ANDITDOESNOTADDTHECURRENTEMISSIONSOFSTRAWCOMBUSTION,BECAUSETHESTRAWISOFTENBURNEDONTHEFIELDSONTHECONTRARY,BECAUSEOFTHECONTROLLEDCOMBUSTIONANDFLUEGASCLEANING,THECOANDPARTICLEEMISSIONSFROMTHEPOWERPLANTARECLEARLYLOWERITISCALCULATEDTHATWITHTHEBIOMASSFIREDPOWERPLANTOF25MW,SOME210000TONS/YEAROFCO2AND4600TONSOFSO2EMISSIONAREAVOIDEDINCOMPARISONTOPOWERPRODUCTIONWITHCOAL5ECONOMICPERFORMANCETHEOPERATIONALCOSTCONSISTSOFTHEFUELSUPPLYCOSTSANDTHEOPERATIONMAINTENANCECOSTSOFTHEPLANTCOSTOFSTRAWSUPPLYISAROUND36€/T,INCLUDINGEVERYLOGISTICACTIVITYUNTILFUELREACHESTHEPLANTASTHEANNUALCONSUMPTIONIS160000TONS,FUELSUPPLYCOSTSAREAROUND5760000€/YEARONTHEOTHERHAND,THEORDINARYOMCOSTSAREESTIMATEDAROUND12€/MWH,PLUSOTHERFINANCIAL,AMORTIZATION,SPAREPARTSANDEXTRAORDINARYCOSTSTHEEXPECTEDINCOMESOFTHEPLANTWILLDEPENDONTHERATEFORELECTRICITYSUPPLYTOTHEGRIDBYBIOMASSMEANS,WHICHISANNUALLYREVISEDASANAVERAGE,THEUTILITYPURCHASESTHEELECTRICITYATARATEOF65€/MWH,SOTHATTHEANNUALELECTRICITYSALESWILLBEAROUND13MILLION€ASFINANCIALSOURCES,THEEUROPEANCOMMISSIONHASCONTRIBUTEDWITH3MILLION€,ANDTHESPANISH“INSTITUTOPARALADIVERSIFICACINYAHORRODELAENERGA”IDAEHASFINANCEDANOTHER24MILLION€,PLUSASHAREOF10OFTHETOTALINVESTMENTTAKINGTHESECONTRIBUTIONSINTOACCOUNT,ASWELLASTHEPREVIOUSPERFORMANCEDATA,THEPAYBACKPERIODISESTIMATEDTOBEAROUND15YEARSCONCERNINGJOBCREATION,THECONTINUOUSOPERATIONOFTHEPOWERPLANTCREATES24NEWPERMANENTJOBSATTHEPOWERPLANTANDAPPROXIMATELY80JOBSMOREINGATHERING,PROCESSINGANDTRANSPORTOFTHEFUEL,ANDOTHERVARIOUSACTIVITIESALSO,DURINGTHECONSTRUCTIONPERIODTHEREWASANAVERAGEOF200PEOPLEWORKINGONSITEDURING18MONTHS6PROJECTIDENTIFIERSPROJECTBM/12/97OWNEREHNCORPORACINENERGAHIDROELCTRICADENAVARRA,SAYANGUASYMIRANDA,1–5E31002PAMPLONASPAINTEL34948229422FAX34948222970WWWEHNESCONTRACTORSFLSMILJA/S,POWERTECHNICSCONSULTINGENGINEERSOY,IDAEINSTITUTOPARALADIVERSIFICACINYAHORRODELAENERGATECHNOLOGYFLSBOILERANDSTRAWHANDLINGALSTOMABBTURBINEPOWERGENERATORGROUPABENGOAMANAGEROFTHEPLANTENGINEERINGANDCONSTRUCTIONTOTALCOST51000000€ECSUPPORT3000000€

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