欢迎来到人人文库网! | 帮助中心 人人文档renrendoc.com美如初恋!
人人文库网
全部分类
  • 图纸下载>
  • 教育资料>
  • 专业文献>
  • 应用文书>
  • 行业资料>
  • 生活休闲>
  • 办公材料>
  • 毕业设计>
  • ImageVerifierCode 换一换
    首页 人人文库网 > 资源分类 > DOC文档下载  

    外文翻译--25MW高效秸秆燃烧发电厂.doc

    • 资源ID:95633       资源大小:1.37MB        全文页数:8页
    • 资源格式: DOC        下载积分:5积分
    扫码快捷下载 游客一键下载
    会员登录下载
    微信登录下载
    三方登录下载: 微信开放平台登录 支付宝登录   QQ登录   微博登录  
    二维码
    微信扫一扫登录

    手机扫码下载

    请使用微信 或支付宝 扫码支付

    • 扫码支付后即可登录下载文档,同时代表您同意《人人文库网用户协议》

    • 扫码过程中请勿刷新、关闭本页面,否则会导致文档资源下载失败

    • 支付成功后,可再次使用当前微信或支付宝扫码免费下载本资源,无需再次付费

    账号:
    密码:
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源(1积分=1元)下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    外文翻译--25MW高效秸秆燃烧发电厂.doc

    25MWStraw-Fired,HighEfficiencyPowerPlant1.AimTheaimoftheproposedprojecthasbeentodesign,construct,ownandoperateanewelectricitygenerationcapacitybasedonrenewableenergysources,inthiscaseonstraw,withthepossibilityofaddingwoodchips,withasoundtechnologicalandeconomicalbasis.Theowner,EHN,expectsthisprojecttopromotetheimplementationofitsfuturestrategiesandplansinitsfieldsofactivity.Bio-energycropsarealreadybeinginvestigatedatdemonstrationscaleasafuelalternative,also.Fromthepointofviewoftechnologicaldevelopment,theaimhasbeentodemonstratetheinnovativetechnicalsolutions,highefficiencysteamboilerwithhighsteamtemperatureforwoodandstrawfiringwithnewsuperheaterconstruction,tosolveslaggingandcorrosionproblemsuptonowrelatedtocombustionofstraw.Thesuccessfuldemonstrationhascreated(andwillcreate)newprojectandjobopportunitiesbyofferingaviablesolutiontoexploitdifficultbiomassfuelswhichcurrentlyaretreatedmostlyaswaste.2.IntroductionPhoto1:ViewoftheSangüesaPowerPlantwithstrawbarnontheright,andboilerbuildingontheleftThepowerplantisanelectricitygenerationfacilitybasedonrenewableenergy,whichsuppliesanetamountof25MWofelectricitytothegrid.Anadditionalpowerproductionofabout2.5MWofelectricityisgeneratedforconsumptionintheownoperationsystemsoftheplant,andheatproductionisnowadaysreleasedatthecondensingsystem,whichiscooledbyawaterintakefromanirrigationchanneloftheIratiriver.Theplantoperationavailabilityisexpectedtobe8.000hours/year,whichleadstoanannualelectricityproductionof200GWh.TheplantislocatedattheIndustrialAreaofRocaforte,nearthelocalityofSangüesa,intheregionofNavarra,Spain.Thetechnologyisbasedonaninnovativebiomassboiler,togetherwithaconventionalsteamcircuitandsteamturbineprocess.Thecoretechnologyislocatedintheboiler,whichincludesnovelhangingplatensuperheatersforthesteam,specificallydesignedwithspecialmaterialsandshapesforminimizingcorrosionontheirsurface.Italsoincludesavibratinghydrogratemadeoftwodifferentsections,andaninnovativefeedingsystemdesign,includingsafetydevicesforfireprevention.Thewholeboilerandfeedingsystemisanimproveddesignofthetechnologicalpartner,theDanishcompanyFLSmiljø.Asfuel,theplantisinitiallydesignedforusingonlystraw100%,andalsomixturesofwoodchipsandstrawupto50%(inheatvalues).Atthemoment,onlytheinvestmentsinfacilitiesandlogisticsforstrawhavebeencarriedout,butenoughspaceisavailablefortheconstructionofanadditionalbarnandfeedingsystemsforwoodchips.Annualfuelconsumptionoftheplantis160000tons/yearofstraw,mainlyofwheat,barleyandcorn,allofwhichiscollectedallaroundtheregion.Logisticsforfuelcollectioninthefields,handling,transportandstorageincludelong-termcontractswithfarmersandservicecompaniesinordertoprovidethewholeannualsupply.Theplantfirstconnectiontothegridwasachievedon25thJune2002.Afterseveraloperationteststheplanthasreachedfullloadoperation,andresultsarecompletelysuccessful.3.TechnicaldescriptionBoilerThestrawandwoodfiredboilerisanimprovedFLSmiljødesign.Itincludesavibratinghydrogratespeciallydefinedforhandlingthespecificqualityofthestrawtobeburnt.Thegrateismadeintwosectionsthatenabletheuseofstraworamixtureofwoodandstrawasfuel,havinglowashmeltingtemperatureanddifficultsinteringorslaggingproperties.Thestrawisfedtotheboilerthroughfourmechanicalfeedopenings.Thetransportationoftheburningmassandtheashthroughthegrateismadebytheashremovalsystem,whichperiodicallyvibrates,duringafewsecondsevery5minutes.Thecycleofvibrationandtheintervalsareadjustedduringthecommissioningoftheboilerdependingonthequalityofthestraw.Thegrateitselfismadeasaboilerpanelwall,includingperforationsforinputofthecombustionair.Thistypeofgratehasverylowmaintenancecostsandhighreliability.Photo2:Boiler,turbineandofficesbuildingsAshthatfallsdownfromthegrateisthentransportedtoacontainer,andtheflyashiscollectedinthebagfilter.Theremainingparticlecontentinthefluegasesislessthan50mg/Nm3.Fromthebagfilterashhoppers,theashisconveyedtoaflyashcontainer.Boththebottomandflyashesarebeingreusedasorganicfertilisers.Thehotfluegasesareledtothehangingplatensuperheatersinsidetheboilerandthentothesecondpass,wherethefeedwatereconomizerandcombustionairpreheatersarelocated.Economizerandairpre-heatingareusedtocoolthefluegasesdowntoapproximately130ºCbeforereleasingthemthroughthestackintotheatmosphere.SuperheatersThenewstrawfiredhangingplatensuperheatersincreasethesteamtemperatureupto540ºCdirectlywiththestrawcombustiongasesinsidetheboiler.Duetotherapidhightemperaturecorrosioncausedbythealkalinecontentsofthestrawash,thesuperheatershavebeencarefullydesigned,usingresistantmaterials,anexactdesign(includingtheappropriateadditionalsurfaceareaforheatexchange),andcompletelyeliminatingtheuseofnaturalgasorotherfuelsforsuperheatingthesteam.AresearchprojectwiththePublicUniversityofNavarraisalsoundergoing,aimingatanalysingnewmaterialsforthesesuperheaters.SteamcycleThepowerplantprocessisdesignedforhighelectricalefficiency.Thisisaccomplishedbyusingthecondensateandfeedwaterpre-heating,“internalco-generation”.Thehighpressureandtemperaturesteam(100bar,540ºC)isfedfromtheboilertotheextraction-condensingsteamturbine.Steamisextractedfromthesteamturbineforpre-heatinginfouruncontrolledextractions.Theexhauststeamfromtheturbineiscondensedinacondenserusingriverwaterascoolingmedium.Fromthecondenserthecondensateisreturnedthroughthepre-heatingstagestothefeedwatertankandfurthertotheboilerforsteamgeneration.Figure1:ProcessdiagramTurbine-GeneratorThesteamturbineisofextraction-condensingtype.Ithasacapacityof30MWattheterminalsofthealternator.Withanauxiliarypowerconsumptionofnearly2.5MW,theaveragenetelectricaloutputis25MW.Thealternatoroutputvoltageis10kV.Theplantisconnectedtothe66kVgridthroughablocktransformer.Separateauxiliarytransformersareusedtofeedtheauxiliarypowerforplantsownpowerconsumption.4.PerformanceoftheplantBeforestartingtheplantoperation,strawcollectionandstorageinthefieldstartedinsummer2000.Campaignsofyears2001and2002wereusedtofinetuningthelogisticsactivitiesandincreasingtheamountofstoredstraw.Theplantfirstconnectiontothegridwasachievedon25thJune2002,whichmeantthestartofthecommissioningandmonitoringphase.Sincethen,severaltestsandadjustmentshavebeenmade,includingthegradualpowerincreaseuntilfullloadwasreachedatthebeginningof2003.InJuly2003theplantisstilladjustingitsproductionparameters,andfullcommercialoperationwillstartaftersummer.Duringthefirstwholeyearofoperationattestinglevel(fromJune2002toMay2003),theplanthasconsumedanamountequivalentto99124tonsofstrawwith11%ofmoisture,andthecorrespondingelectricitysuppliedattheutilitysubstationhasbeen118.94GWh.Theefficiencywillbeimprovedto200GWh/awith160000tonsofstrawoncecommercialoperationwillbereached.Theproposedrenewableenergyprojecthasaclearlypositiveimpactontheenvironmentintheregion,asitreplaceselectricitywhichwouldotherwisebeproducedwithfossilfuels,anditdoesnotaddthecurrentemissionsofstrawcombustion,becausethestrawisoftenburnedonthefields.Onthecontrary,becauseofthecontrolledcombustionandfluegascleaning,theCOandparticleemissionsfromthepowerplantareclearlylower.Itiscalculatedthatwiththebiomassfiredpowerplantof25MW,some210000tons/yearofCO2and4600tonsofSO2-emissionareavoidedincomparisontopowerproductionwithcoal.5.EconomicPerformanceTheoperationalcostconsistsofthefuelsupplycostsandtheoperation&maintenancecostsoftheplant.Costofstrawsupplyisaround36/t,includingeverylogisticactivityuntilfuelreachestheplant.Astheannualconsumptionis160000tons,fuelsupplycostsarearound5760000/year.Ontheotherhand,theordinaryO&Mcostsareestimatedaround12/MWh,plusotherfinancial,amortization,sparepartsandextraordinarycosts.Theexpectedincomesoftheplantwilldependontherateforelectricitysupplytothegridbybiomassmeans,whichisannuallyrevised.Asanaverage,theutilitypurchasestheelectricityatarateof65/MWh,sothattheannualelectricitysaleswillbearound13million.Asfinancialsources,theEuropeanCommissionhascontributedwith3million,andtheSpanish“InstitutoparalaDiversificaciónyAhorrodelaEnergía”(IDAE)hasfinancedanother2.4million,plusashareof10%ofthetotalinvestment.Takingthesecontributionsintoaccount,aswellasthepreviousperformancedata,thepaybackperiodisestimatedtobearound15years.Concerningjobcreation,thecontinuousoperationofthepowerplantcreates24newpermanentjobsatthepowerplantandapproximately80jobsmoreingathering,processingandtransportofthefuel,andothervariousactivities.Also,duringtheconstructionperiodtherewasanaverageof200peopleworkingonsiteduring18months.6.ProjectIdentifiersProject:BM/12/97Owner:EHN(CorporaciónEnergíaHidroeléctricadeNavarra,S.A)YanguasyMiranda,15ºE-31002PamplonaSPAINTel:+34948229422Fax:+34948222970www.ehn.esContractors:FLSMILJØA/S,POWERTECHNICSCONSULTINGENGINEERSOY,IDAE(InstitutoparalaDiversificaciónyAhorrodelaEnergía)Technology:FLS(boilerandstrawhandling)Alstom-ABB(turbine&powergeneratorgroup)Abengoa(manageroftheplantengineeringandconstruction)TotalCost:51000000ECSupport:3000000

    注意事项

    本文(外文翻译--25MW高效秸秆燃烧发电厂.doc)为本站会员(上***)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网(点击联系客服),我们立即给予删除!

    温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    网站客服QQ:2881952447     

    copyright@ 2020-2024  renrendoc.com 人人文库版权所有   联系电话:400-852-1180

    备案号:蜀ICP备2022000484号-2       经营许可证: 川B2-20220663       公网安备川公网安备: 51019002004831号

    本站为文档C2C交易模式,即用户上传的文档直接被用户下载,本站只是中间服务平台,本站所有文档下载所得的收益归上传人(含作者)所有。人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。若文档所含内容侵犯了您的版权或隐私,请立即通知人人文库网,我们立即给予删除!