1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 08 April 2003, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 12952-9:2002 Water-tube boilers and auxiliary installations Part 9: Requirements for firing systems for pulverized solid fuels for the boiler The European Standar
2、d EN 12952-9:2002 has the status of a British Standard ICS 27.040 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 08 April 2003, Uncontrolled Copy, (c) BSIBS EN 12952-9:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and
3、 Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 7 January 2003 BSI 7 January 2003 ISBN 0 580 41072 2 National foreword This British Standard is the official English language version of EN 12952-9:2002. When reference to this European Standard
4、has been published in the Official Journal (OJ) of the European Communities, compliance with it will confer a presumption of conformity with the essential requirements covered by the standard in respect of the Pressure Equipment Directive. The UK participation in its preparation was entrusted to Tec
5、hnical Committee PVE/2, Water-tube boilers, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document m
6、ay be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users
7、 are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change,
8、and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 25 and a back cover. The BSI copyright date displayed in this docume
9、nt indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 08 April 2003, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN129529 December2002 ICS27.040
10、 Englishversion WatertubeboilersandauxiliaryinstallationsPart9: Requirementsforfiringsystemsforpulverizedsolidfuelsforthe boiler ChaudirestubesdeauetinstallationsauxiliairesPartie 9:Exigencespourlesquipementsdechauffepour combustiblespulverissdelachaudire WasserrohrkesselundAnlagenkomponentenTeil9:
11、AnforderungenanStaubfeuerungsanlagenfrdenKessel ThisEuropeanStandardwasapprovedbyCENon4November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographic
12、alreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheMana
13、gementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARD
14、IZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN129529:2002E Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre,
15、 08 April 2003, Uncontrolled Copy, (c) BSIEN129529:2002(E) 2 Contents page Foreword3 1 Scope 4 1.1 Firingsystems 4 1.2 Fuels4 1.3 Operation 4 1.4 Boundaryofpulverizingsystem 4 2 Normativereferences 4 3 Termsanddefinitions. .5 4 Fuelbunkerswithconveyingplant. .8 4.1 General8 4.2 Conveyingplant . 8 4.
16、3 Coalbunkers 8 5 Pulverizingsystemandpulverizedfuelsystem . 9 5.1 General9 5.2 Coalfeeders 9 5.3 Mills .9 5.4 Pulverizedfuelbins .10 5.5 Pulverizedfuelsupplypipesandshutoffdevices 10 6 Explosionpreventionmeasuresforpulverizingsystemsandpulverizedfuelsystems11 6.1 General11 6.2 Plantsoperatedwithout
17、inertgasprotection .12 6.3 Plantsoperatedwithinertgasprotection. 12 7 Equipmentforairsupplyandfluegasdischarge . .13 7.1 Airsupply 13 7.2 Air/fuelratio 13 7.3 Fluegasdischarge .14 8 Firingsystem . .14 8.1 General14 8.2 Burnersforpulverizedfuel . .14 8.3 Fluegasrecirculation .14 8.4 Modificationofthe
18、firingsystemsetting . .15 8.5 Monitoringandcontrol .15 8.6 Electricalequipment .15 8.7 Safetyprecautions 16 9 Ashextractionplant .19 10 Operationandmaintenance 19 10.1 General19 10.2 Operatingmanualandinstructions .19 AnnexA (informative) Operationalrequirementsforpermanentlysupervisedfiringsystemfo
19、r pulverizedfuel 21 AnnexZA (informative) ClausesofthisEuropeanStandardaddressingessentialrequirementsor otherprovisionsofthePressureEquipmentDirective . 24 Bibliography 25 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 08 April 2003, Uncontrolled Copy, (c) BSIEN129529:200
20、2(E) 3 Foreword Thisdocument(EN129529:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC269“Shellandwatertube boilers”,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJune2003,andconflictingn
21、ationalstandardsshallbewithdrawnatthelatestby June2003. ThisdocumenthasbeenpreparedunderamandategiventoCENbytheEuropeanCommissionandtheEuropean FreeTradeAssociation,andsupportsessentialrequirementsofEUDirective97/23/EC1. ForrelationshipwithEUDirective97/23EC,seeinformativeAnnexZA,whichisanintegralpa
22、rtofthisdocument. TheEuropeanStandardEN12952concerningwatertubeboilersandauxiliaryinstallationsconsistsofthefollowing parts: Part1: General Part2: Materialsforpressurepartsofboilersandaccessories Part3: Designandcalculationforpressureparts Part4: Inserviceboilerlifeexpectancycalculations Part5: Work
23、manshipandconstructionofpressurepartsoftheboiler Part6: Inspectionduringconstruction;documentationandmarkingofpressurepartsoftheboiler Part7: Requirementsforequipmentfortheboiler Part8: Requirementsforfiringsystemsforliquidandgaseousfuelsfortheboiler Part9: Requirementsforfiringsystemsforpulverizeds
24、olidfuelsfortheboiler Part10: Requirementsforsafeguardsagainstexcessivepressure Part11: Requirementsforlimitingdevicesoftheboilerandaccessories Part12: Requirementsforfeedwaterandboilerwaterquality Part13: Requirementsforfluegascleaningsystems Part14: RequirementsforfluegasDENOXsystems Part15: Accep
25、tancetests Part16: Requirementsforgrateandfluidizedbedfiringsystemsforsolidfuelsfortheboiler CR1295217, WatertubeboilersandauxiliaryinstallationsPart17:Guidelinefortheinvolvementofaninspec tionbodyindependentofthemanufacturer. Althoughthesepartsmaybeobtainedseparately,itshallberecognizedthattheparts
26、areinterdependent.Assuch, thedesignandmanufactureofwatertubeboilersrequirestheapplicationofmorethanonepartinorderforthere quirementsofthestandardtobesatisfactorilyfulfilled. NOTE Parts4and15arenotapplicableduringthedesign,constructionandinstallationstages. AnnexAofthisEuropeanStandardisinformative.
27、AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcoun triesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Swe den,Switzerl
28、andandtheUnitedKingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 08 April 2003, Uncontrolled Copy, (c) BSIEN129529:2002(E) 4 1Scope 1.1 Firingsystems ThisEuropeanStandardappliestopulverizedfuelfiringsystemsofsteamboilersandhotwatergeneratorsand commencesatthefillinge
29、quipmentfortheboilerbunkersorforthepulverizedfuelstoragesystemandendsatthe ashextractionplant.Formultifuelfiringsystemsusingseparateorcombinedburners,theserequirementsapplytothe pulverizedfuelfiringpartinvolved.Forotherfuelsorfiringsystemsusedincombination,otherrequirementsapplye.g. EN129528. 1.2Fue
30、ls Theserequirementscovertheuseofpulverizedfuelsoriginatingfromcoalrangingfromlowtohighvolatilematter content.Thisincludese.g.coke,anthracite,bituminouscoalorhardcoal,ligniteorbrowncoal,petrolcokeandoil shale. 1.3Operation Requirementsforoperationalequipmentapplyforsteamboilersandhotwatergeneratorsw
31、ithpermanentsupervision byproperlytrainedpersons. Asfiringsystemsusingpulverizedfuelmaybedesignedeitherasdirectfiringorasindirectfiringsystems,operational requirementshavetobedifferentiated.AnnexAsummarizestheoperationalrequirementsforfiringsystemsincluding thepulverizingsystem. 1.4 Boundaryofpulver
32、izingsystem Apulverizingsystemisboundedby: theoutletofthefuelbunkersfeedingthemill; theoutletoftheburnersfedfromthatmill; thepointsatwhichthehotairorfluegasandtemperingairorfluegasleavetheirmainsupplyductsincluding theprimaryairfanifassociatedindividuallywiththemill. 2 Normativereferences ThisEurope
33、anStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincor
34、poratedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN11271, ExplosiveatmospheresExplosionpreventionandprotectionPart1:Basicconceptsandmethod ology. EN129528, WatertubeboilersandauxiliaryinstallationsPart8:Requirementsforfirin
35、gsystemsforliquidand gaseousfuelsfortheboiler. prEN501561, ElectricalequipmentforfurnacesandancillaryequipmentPart1:Requirementsforapplication designandinstallation. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 08 April 2003, Uncontrolled Copy, (c) BSIEN129529:2002(E) 5
36、3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN129528andthefollowingapply. 3.1 backupfiringsystem separatefiringsystemtomaintainsafeignitionandstablecombustionofthepulverizedfuel 3.2 burnergroup burnersoperatedinforcedunisonandcontrolledjointlyandtheburners
37、suppliedbythesamemillorthesamepul verizedfuelfeeder 3.3 burnermanagementsystem burnermanagementsystemperformsapredeterminedsequenceofactionsandalwaysoperatesinconjunction withaflamemonitor.Itreactstosignalsfromcontrolandsafetydevices,givescontrolcommands,controlsthe startupsequence,supervisestheburn
38、eroperation,andcausescontrolledshutdownandlockout 3.4 carriergas transportmediumforpulverizedfuelthroughmill,classifier,andpulverizedfuellines.Itmayconsistofprimaryair and/orinertgas 3.5 clearing removalofaccumulationorsettlementofpulverizedfuelinthecaseofinsufficientpurgingofthepulverizingsystem 3.
39、6 coalbunker bunkerforthestorageofrawcoalforanindividualmill 3.7 coalfeeder installationfortheextractionofcoalfromthecoalbunkerandthecontrolledfeedingofcoalintothemill 3.8 combustionair totalairsuppliedtothefiringsystemforcombustion 3.9 conveyingplant(Coalhandlingplant) installationforconveyinganddi
40、stributingrawcoaltotheindividualcoalbunkers 3.10 directfiringsystem systemwherethefuelisgroundanddriedinthemillandthenisfeddirectlytotheburners 3.11 explosion unintentionalinstantaneouscombustionphenomenonoccurringinaconfinedspacewithconsiderablepressure buildup NOTE Aweakexplosioniscalledpuffing. 3
41、.12 explosionpressureresistantdesign installationsthataredimensionedsoastowithstandthemaximumexplosionpressurewithoutsubstainingperma nentdeformation Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 08 April 2003, Uncontrolled Copy, (c) BSIEN129529:2002(E) 6 3.13 explosionpr
42、essureshockresistantdesign installationsthataredimensionedsoastowithstandthepressuresurgeoccurringduringanexplosionwithout rupturealthoughpermanentdeformationmayoccur 3.14 firingrateduringstartup firingrateofaburneroraburnergroupformingpartofapulverizingsystemofadirectfiredsystemduringstartup 3.15 f
43、iringsystem equipmentforthecombustionoffuels,includingtheinstallationsforthestorageintheboilerhouse,preparation andsupplyoffuels,thecombustionairsupply,theburner(s),thefluegasdischarge,andallrelatedcontroland monitoringdevices NOTE Afluegasrecirculationsystemcanbeinstalledasanintegralpartofthefiring
44、system. 3.16 firingsystemheatinput heatinputintothecombustionchamber,normallycalculatedasthemassflowofthefuelsuppliedmultipliedbyits netcalorificvalue 3.17 flamemonitor devicethatdetectsthepresenceorabsenceoftheflameandtransmitsasignaltothecontroldevice Forapulverizedfuelfiringsystemtheflamecanbedefinedas: anindividualflameofasingleburner, theflameofaburnergroupforinstanceallburnersconnectedtoapulverizings
