GB 50607-2010 GB50607-2010高爐噴吹煤粉工程設(shè)計(jì)規(guī)范-英文

專用

人人文庫(kù)

NATIONALSTANDARD

OFTHEPEOPLESREPUBLICOFCHINA

DesignRegulationsofPulverizedCoal

InjectionforBlastFurnace

GB50607-2010

ChiefDevelopmentDepartment:ChinaMetallurgicalConstructionAssociation

ApprovalDepartment:MinistryofHousingandUrban-Rural

DevelopmentofthePeoplesRepublicofChina

ImplementationDate:February1,2011專用

人人文庫(kù)

ChinaPlanningPress

Beijing2015

圖書在版編目(CIP)數(shù)據(jù)

高爐噴吹煤粉工程設(shè)計(jì)規(guī)范英文中國(guó)冶金建設(shè)協(xié)會(huì)組

GB50607-2010:/

織編譯北京中國(guó)計(jì)劃出版社

.—:,2015.12

ISBN978-7-5182-0334-5

中高爐噴煤設(shè)計(jì)規(guī)范中國(guó)英文

Ⅰ.①G…Ⅱ.①…Ⅲ.①----

Ⅳ.①TF57-65

中國(guó)版本圖書館數(shù)據(jù)核字第號(hào)

CIP(2015)291212

ChineseeditionfirstpublishedinthePeoplesRepublicofChinain2010

EnglisheditionfirstpublishedinthePeoplesRepublicofChinain2015

byChinaPlanningPress

rd

3Floor,CTower,GuohongBuilding專用

No.A11,Muxidi-Beili,XichengDistrict

Beijing,100038

PrintedinChinabyBeijingJinghuaHucaisPrintingCO.,LTD

?2015byMinistryofHousingandUrban-RuralDevelopmentof

thePeoplesRepublicofChina

Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformor

byanymeans,graphic,electronic,ormechanical,includingphotocopying,recording,

oranyinformati人人文庫(kù)onstorageandretrievalsystems,withoutwrittenpermissionofthepublisher.

Thisbookissoldsubjecttotheconditionthatitshallnot,bywayoftradeorotherwise,belent,

resold,hiredoutorotherwisecirculatedwithoutthepublisherspriorconsentinanyformof

blindingorcoverotherthanthatinwhichthisispublishedandwithoutasimilarcondition

includingthisconditionbeingimposedonthesubsequentpurchaser.

ISBN978-7-5182-0334-5

AnnouncementofMinistryofHousingandUrban-Rural

DevelopmentofthePeoplesRepublicofChina

No.663

Announcementonpublishingthenationalstandard

DesignRegulationsofPulverizedCoalInjectionforBlastFurnace

DesignRegulationsofPulverizedCoalInjectionforBlastFurnace

hasbeenapprovedasa

nationalstandardwithaserialnumberofGB50607-2010andimplementedonFebruary1,2011.

Thefollowingarticlesarecompulsoryprovisionsandmustbeenforcedstrictly:3.1.1,3.7.1(1),

3.7.2,3.7.5(4),3.8.2(3).

AuthorizedbyOurInstituteofStandardsandNorms,thisStandardispublishedand

distributedbyChinaPlanningPress.專用

MinistryofHousingandUrban-RuralDevelopmentofthePeoplesRepublicofChina

July15,2010

人人文庫(kù)

Foreword

ThisStandardwasjointlydevelopedbyCapitalEngineering&ResearchIncorporationLimited

(CERI)andotherrelevantunitsaccordingtotherequirementsofDocumentJianBiao〔2007〕

NoticeonPrintingthe

No.126issuedbytheoriginalMinistryofConstruction(MOC)-

DevelopmentandRevisionPlanofNationalEngineeringConstructionStandardsinnd

2007(2

batch

).

DuringthedevelopmentofthisStandard,thedevelopmentgroupconductedextensive

researchesandtechnicalstudiesonspecifictopics,summedupyearsofpracticesandexperiencesof

designingpulverizedcoalinjection(PCI),andsolicitedopinionsfromvariousunitsand

organizationssuchasmanufacturers,researchinstitutes,designinstitutesandinstitutionsofhigher

education,andfinalizedthedraftthroughseriousreview.

ThisStandardcomprises8chapterswiththemaintechnicalcontentsasfollows:General

provisions,Terms,ProcessandEquipment,Oxygen-enrichedblastandoxygensupplypipeline,

Buildingandstructure,Electricalandinstrumentationcontrol,En專用ergymedia,aswellasFire

protection,securityandenvironmentalprotection.

Theprovisionsprintedinboldtypearecompulsoryonesandmustbeenforcedstrictly.

MinistryofHousingandUrban-RuralDevelopment(MOHURD)isinchargeofthe

administrationofthisStandardandtheexplanationofthecompulsoryprovisions,whileChina

MetallurgicalConstructionAssociationinchargeoftheroutinemanagement,andCERIinchargeof

theexplanationofspecifictechnicalcontents.Allrelevantorganizationsarekindlyrequestedtosum

upandaccumulateexperiencesinactualprojectpracticesduringtheprocessofimplementingthis

Standard.IfsomewhereinthisStandardneedstobemodifiedorsupplemented,pleasesendyour

commentsandsuggestionstotheManagementUnitofDesignRegulationsofPulverizedCoal

InjectionforBlastFurnaceofCERI(Address:No.7Jiananjie,BeijingEconomic-Technological

DevelopmentArea,Beijing;Zipcode:100176)toprovidereferenceforfuturerevision.

ChiefDevelopmentOrganization,ParticipatingDevelopmentOrganizations,ChiefDrafting

StaffandMainReviewersofthiscodearelistedbelow.

ChiefDevelomentOranization

pg:

人人文庫(kù)CapitalEngineering&ResearchIncorporationLimited

ParticiatinDevelomentOranizations

pgpg:

CISDIEngineeringCo.,Ltd.

WISDRIEngineering&ResearchIncorporationLtd.

HuatianEngineering&TechnologyCorporation

BerisEngineering&ResearchCorporation

BeijingShougangInternationalEngineeringTechnologyCo.,Ltd.

BaoshanIron&SteelCo.,Ltd.

AnshanIron&SteelGroupCorporation

WuhanIron&SteelGroupCorporation

·1·

ChiefDraftinStaff

g:

WuQichangZhangJianliangJiaJingWangYanminHuRijun

LiuYingTangZhenyanTangQinghuaZhuJinmingYaoBo

TangChuxiongHanZhongliZhouShuyuanWangWeihaiYanXin

XiBanghua

ChiefReviewers

:

GuFeiPengHuaguoTangWenquanZhouJiangangYuJincheng

WanChenglueHeGuoqiangZhaoJunWangLinWuQiuting

專用

人人文庫(kù)

·2·

Contents

……………

1GeneralProvisions(1)

…………………………

2Terms(2)

………………………

3ProcessandEquipment(4)

…………

3.1GeneralRequirement(4)

………

3.2RequirementontheCoalCharacteristicsandtheCoalType(4)

………………

3.3QualityRequirementonRawCoal(4)

……………

3.4QuantityofPulverizedCoalInjection(5)

…………

3.5RequirementontheSizeandMoistureofPulverizedCoal(5)

………………

3.6StorageBuilding,TransportationandStorageConditionsforRawCoal(5)

……………

3.7PulverizedCoalPreparationSystem(6)

………………

3.8PulverizedCoalInjectionSystem(10)

………

4Oxygen-EnrichedBlastandOxygenSupplyPipeline(15)

………………………

5BuildingandStructure(16)

………

專用()

6ElectricalandIstrumentationControl17

…………

6.1GeneralRequirement(17)

………………

6.2DetectionandControlRequirement(17)

…………………

7EnergyMedia(20)

…………………

8FireProtection,SecurityandEnvironmentalProtection(21)

…………

ExplanationofWordinginThisCode(22)

…………

ListofQuotedStandards(23)

……………

Addition:ExplanationofProvisions(25)

人人文庫(kù)

1Generalprovisions

1.0.1

ThisStandardisformulatedwithaviewtopromotingthedevelopmentofpulverizedcoal

injection(PCI)technology,andensuringbetterutilizationofresourcesandenergyinPCIdesigns

forblastfurnace(BF).

1.0.2

ThisStandardisapplicabletodesignsoftheconstruction,renovationandextensionofPCI

forblastfurnace.

1.0.3

PCIdesignsforBFshallconscientiouslyimplementthenationalsteelindustrydevelopment

policies,followtheprincipleofcirculareconomy,strengthenenvironmentalprotection,aswellas

achieveproductionsafety,energyconservationandemissionreduction.Thedesignsshallbe

technologicallyadvanced,economic,rational,reliableandpractical.

1.0.4

PCIdesignsforBFshallcomplywithnotonlytherequirementsstipulatedinthis

Standard,butalsothoseinthecurrentrelevantonesofthenation.

專用

人人文庫(kù)

·1·

2Terms

2.0.1

Pulverizedcoalinjectionproject

Aprojectinwhichpulverizedcoalisblownintoblastfurnacethroughthetuyeresbymeansof

pneumaticconveying.

2.0.2

Pulverizedcoalpreparationsystemwithdirectfumedischarge

Apulverizedcoalpreparationsysteminwhichthegasthatentersthecoalpulverizerfordrying

andconveyinginthepreparationsystemiscomposedofthefumeburntbythefumefurnaceandthe

fume(orair)fromthehotstove,andinwhichthesaidgasisalldischargedintotheatmosphere

afterpassingthroughthebag-typecollector,themainexhaustfanandotherequipments.

2.0.3

Pulverizedcoalpreparationsystemwithself-cyclingfume

Apulverizedcoalpreparationsysteminwhichthegasthatentersthecoalpulverizerfordrying

andconveyinginthepreparationsystemissuppliedbythefumeburnbythefumefurnace,andin

whichafterpassingthroughthebag-typecollector,themainexhaustfanandotherequipments,only

partofthesaidgasisdischargedintotheatmosphere,andtherestret專用urnstothecoalpulverizerfor

reuse.

2.0.4

Directpulverizedcoalinjectionsystem

Apulverizedcoalinjectionsysteminwhichthefacilitiesofthepulverizedcoalpreparation

systemandthefacilitiesofthepulverizedcoalinjectionsystemareinstalledinthesameplant

building,andinwhichpulverizedcoaldirectlyentersthepulverizedcoalbin,andthenisblowninto

theblastfurnacethroughthetuyeresbymeansofpneumaticconveyingviatheinjectionsystem

connectedwiththepulverizedcoalbin.

2.0.5

Indirectpulverizedcoalinjectionsystem

Apulverizedcoalinjectionsysteminwhichthefacilitiesofthepulverizedcoalpreparation

systemandthefacilitiesofthepulverizedcoalinjectionsystemareinstalledseparatelyatdifferent

locations,andinwhichpulverizedcoalissenttothepulverizedcoalbinoftheinjectionsystemby

meansofpneumaticconveyingorothermethods,andthenisblownintotheblastfurnacethrough

thetuyerebymeansofpneumaticconveyingviatheinjectiontank.

2.0.6

Serialtanksinjection

Aninjectionm人人文庫(kù)ethod.Twopulverizedcoaltanksarelinkedtogetherinserieswithoneontopof

theother.Thetoptankworksasthestoragetank,itreceivesthepulverizedcoalfromthe

pulverizedcoalbinunderatmosphericpressureandthenfeedsthecoaltothebottomtankunder

pressurizedcondition.Thebottomtankworksastheinjectiontank,itisalwaysinapressurized

statetoinjectthepulverizedcoaltotheblastfurnace.

2.0.7

Paralleltanksinjection

Aninjectionmethod.Thepulverizedcoalinjectionsystemisequippedwithtwoormore

injectiontankswhicharearrangedinparallel.Eachinjectiontankfollowstheprocedureof

injecting-coalcharging-waitingforinjectiontoinjectalternately.

2.0.8

Multiplebranchpipelinestransportation

·2·

Aconveyingmethodwhichusesmultiplepipelinesforpneumaticconveyingofpulverizedcoal

fromtheinjectiontanktotheBFtuyeres.Theendsofallthepipelinesaredirectlyconnectedwith

theindividualcoalinjectionlances.

2.0.9

Collectionpipelinetransportation

Aconveyingmethodwhichonlyhasoneortwopipelinesforpneumaticconveyingofpulverized

coalfromtheinjectiontanktotheblastfurnace.Thispipelineisconnectedwiththeentryofa

distributorwhichhasthesamenumberofexitductsasthetuyeresforinjection.Theexitductsof

thedistributorareconnectedwiththeindividualcoalinjectionlances.

2.0.10

Blendedcoalinjection

Amethodbywhichmultipletypesofrawcoalsareblendedasperacertainproportionand

injectedintotheblastfurnaceafterbeingpulverized.

專用

人人文庫(kù)

·3·

3ProcessandEquipment

3.1GeneralRequirement

3.1.1NewlyconstructedorrenovatedblastfurnacemustinstallPCIfacility.

3.1.2

PCIshallbeappliedwithhighairtemperature,andoxygen-enrichedblastshouldbeused.

3.1.3

Coalshallbechosenfromthefollowingtypes:anthracites;andamongbituminouscoals,

meagercoal,non-cakingcoal,longflamecoal,meagerleancoalandweaklycakingcoal(caking

index≤40).

3.1.4

PCIshallusecoalaccordingtotheactualconditionoflocalcoalresources,andmayuse

blendedcoalaswellaseitheranthraciteorbituminouscoalalone.

3.1.5

PCIfacilityshouldusedirectinjection,andshallbeplacedclosetotheBFinthegeneral

layout.

3.2RequirementontheCoalCharacteristicsandtheCoalType

3.2.1

ThecharacteristicsofthechosencoalandpulverizedcoalindesignsofPCIsystemshall

:專用

complywiththefollowingrequirements

1

Astoanynewtypeofcoalusedintheproject,completetechnicaldataincludingthe

physicalandchemicalpropertiesofitsrawcoalandthecharacteristicsofthepulverizedcoalshall

becollected.

2

Astothecommonlyusedcoaltypewhichhasalreadybeenusedintheprojectwithoutany

specialproblem,dataofthephysicalandchemicalpropertiesofitsrawcoalshallbecollected.

3.2.2

Ifanycoaltypewhichisexplosiveorpronetospontaneousignitionisused,itshallcomply

withthefollowingrequirements:

1

Astoanycoaltypewithahighexplosionindex,specialexplosionpreventionshallbe

designed,andtechnicaldatasuchasmaximumexplosionpressureofapulverizedcoalcloud,

maximumrateofpressureriseofapulverizedcoalexplosion,explosionindexofapulverizedcoal

cloudandetc.shallbecollected.

2

Astoanycoaltypewithahighspontaneousignitiontendency,technicaldatafor

determiningitslevelofspontaneousignitiontendencyshallbecollected.

人人文庫(kù)3.3QualityRequirementonRawCoal

3.3.1

CoalforPCIshallbechosenaccordingtotheconditionoflocalresources,andcoalwithlow

ash,smallsulfurcontentandgoodgrindabilityshallbechosenasinjectioncoal.Thequalityof

injectioncoalshallbeinaccordancewiththosespecifiedinTable3.3.1.

Table3.3.1Qualityofinjectioncoal

3

Furnacevolumelevel(m)10002000300040005000

A

Ashad≤12%≤11%≤10%≤9%≤9%

S

Sulfurcontentt,ad≤0.7%≤0.7%≤0.7%≤0.6%≤0.6%

Grindabilityindex(HGI)≥50≥50≥50≥50≥50

·4·

3.3.2

Thethicknessofcoalplasticlayershallnotbelargerthan10mm.

3.3.3

Coalshallhavethefollowingcharacteristics:goodcombustionperformance,lowignition

temperature,strongreactivenessandhighcalorificvalue.

3.3.4

Thesizeoftherawcoalshouldnotbelargerthan40mm,andfeedingmoisturenotlarger

than12%.

3.4QuantityofPulverizedCoalInjection

3.4.1

PCIquantityshallbedeterminedaccordingtoconditionssuchasrawmaterials,fuels,air

temperature,oxygenenrichment,BFtoppressure,andblasthumidity.PCIquantityunderdifferent

smeltingconditionsshouldbeinaccordancewiththosespecifiedinTable3.4.1,andshallcomply

withthefollowingrequirements:

1

Ifblastisofnaturalhumidityandthehotairtemperatureisbetween1050°C-1100°C,the

lowerlimitinTable3.4.1shallbeused.

2

TheupperlimitinTable3.4.1maybeusedunderthefollowingconditions:highcoke

strength,smallslagquantity,dehumidifiedblast,hotairtemperatureof1200°C-1250°C,andBF

toppressureover0.20MPa.

Table3.4.1PCIquantityunderdifferentsmeltingconditions

Ratioofoxygenenrichment(%)0-1.01.0-2.02.0-3.0≥3.0

PCIquantitypertonofhotmetal(kg/tHM)100-130130-170專用170-200≥200

3.4.2

IfthesmeltingconditionsexceedthespecifiedrangeinArticle3.4.1ofthisStandard,PCI

quantitycanbedeterminedthroughcalculatingthetheoreticalcombustiontemperaturebefore

tuyere.Thetheoreticalcombustiontemperaturebeforetuyereshouldbe2100°C±50°C.

3.4.3

EquipmentcapacityofPCIsystemshallbesurplustothePCIquantityforBF,butthe

maximumPCIquantityshouldnotbelargerthan250kg/tHM.

3.5RequirementontheSizeandMoistureofPulverizedCoal

3.5.1

PCIshouldusefinecoalforinjection.Coalwithsizeover90μmshouldaccountfor

20%-25%ofthetotalpulverizedcoal.

3.5.2

Themoistureofpulverizedcoalshallnotbelargerthan1.5%.

3.6StorageBuilding,TransportationandStorageConditionsforRawCoal

3.6.1

PCIsystemshouldhavedrycoalshed.Thedesignofcoalblendingfacilityshallbeableto

accommodatethe人人文庫(kù)requirementofblendingseveraltypesofcoals,andthecoalblendingfacility

shouldbeplacedinsidethedrycoalshed.Rawcoalsshallberespectivelyunloadedtotheirassigned

locationsaccordingtotheirtypesaftertheyenterthedrycoalshed.

3.6.2

Thestoragecapacityofthedrycoalshedforrawcoalshouldbedesignedtoaccommodate

theamountof5to10daysusage.

3.6.3

Foranycoaltypewithahighspontaneousignitiontendency,watershootingdevicesfor

coolingshallbeinstalledinthedrycoalshedtopreventrawcoalfromspontaneousignition.

3.6.4

Theanglebetweentheslopeofcoalblendinghopperandthehorizontalplaneshouldnotbe

smallerthan55°.Grateshallbeinstalledatthetopofthecoalblendinghopper,andcoalfeedershall

beinstalledunderthecoalblendinghopper.Linerandaircannonmaybeinstalledonthecoal

·5·

blendinghopperaccordingtotheconditionoftherawcoal.

3.6.5

Theconveyingofrawcoalfromthedrycoalshedtothepulverizedcoalpreparationshop

shoulduseordinarybeltconveyorsorsteeplyinclinedbeltconveyors.Angleofordinarybelt

conveyorshallnotbelargerthan18°.

3.6.6

Ironremoversshallbeinstalledintherawcoalconveyingsystemandinterlockedwiththe

beltconveyorswhichtheyarefixedon.

3.7PulverizedCoalPreparationSystem

3.7.1

Theprocessofthepulverizedcoalpreparationsystemshallcomplywiththefollowing

requirements:

1Exceptforanthracite,pulverizedcoalpreparationsystemofblendedcoalandbituminouscoal

mustbedesignedasperdryinertgas.

2

Thepulverizedcoalpreparationsystemwhichisdesignedasperdryinertgasmayusethe

followingprocesses:

1

)Pulverizedcoalpreparationprocesswithdirectfumedischarge;

2

)Pulverizedcoalpreparationprocesswithself-cyclingfume.

3

Inpulverizedcoalpreparationprocesswithdirectfumedischarge,fumefromfumefurnace

andhotstoveshouldbeusedasdryinertgas.

4

專用,

Inpulverizedcoalpreparationprocesswithself-cyclingfumeregulatingdeviceshallbe

installedinthefumepipelinesystem.

5

Pulverizedcoalpreparationsystemshoulduseprimarybag-typecollectorsystemwith

negativepressure.

3.7.2Themaximumallowableoxygencontentofinertatmosphereunderoperatingconditionofthe

systemshallcomplywiththerequirementsstipulatedinTable3.7.2.

Table3.7.2Themaximumallowableoxygencontentofinertatmosphere(%)

LocationBlendedcoalBituminouscoal

Insidethepulverizedcoalbin1212

Attheexitofbag-typefilter1212

3.7.3

Fumefurnaceshallcomplywiththefollowingrequirements:

1

ThefuelofthefumefurnaceshouldbeBFgas.Meanwhile,asmallamountofcokeovengas

ornaturalgasshallbesetasideasauxiliaryfuelforignitionandformakingsurethatfirewillnot

extinguishduringnormalproduction.IfthepressureoftheBFgasislowerthanthesetminimum

pressure,thegass人人文庫(kù)hallbeurgentlycutoff.

2

Thetemperatureofthefumefurnacehearthshouldbelimitedtotherangeof800°C-

1100℃,andnotexceed1200℃atthemaximum.

3

Fumefurnacesystemshallhavepurgingpointofnitrogenorsteam.

4

Onesetofcoalpulverizershouldbepairedupwithonesetoffumefurnace.

3.7.4

Rawcoalbunkershallcomplywiththefollowingrequirements:

1

Theeffectivestoragecapacityofrawcoalbunkershallaccommodate4-8hoursoutputof

thecoalpulverizer.

2

Theinnersurfaceoftherawcoalbunkershallbesmooth.Thegeometryandstructureof

thebunkershallenableallthecoalinsidetoflowdownsmoothlyanddischargescompletely.

·6·

3

Cylindricalrawcoalbunkermadeofsteelstructureshouldbeusedforcoalofhighcaking

property.Astothelowerpartoftherawcoalbunker,itsexitsectionshouldbehyperbolicwitha

constantcross-sectionalshrinkagenotlargerthan0.7.Astorawcoalbunkerwithanexitsectionof

ordinaryconicalshape,theanglebetweenthewalloftheexitsectionandthehorizontalplaneshall

notbesmallerthan60°.Thediameterofalltherawcoalbunkeroutletsshouldnotbesmallerthan

600mm.Theoutletoftherawcoalbunkershallhaveaircannonormaintenancehandhole.

4

Astothenon-cylindricalrawcoalbunkerusedforordinaryrawcoal,theanglebetweenthe

intersectinglineofitstwoadjacentwallsandthehorizontalplaneshallnotbesmallerthan55°,and

theanglebetweenitswallandthehorizontalplaneshallnotbesmallerthan60°.Astothenon-

cylindricalrawcoalbunkerusedforcoalofhighcakingpropertyorhighsensitivitytoexplosionand

highspontaneousignitiontendency,theanglebetweentheintersectinglineofitstwoadjacentwalls

andthehorizontalplaneshallnotbesmallerthan65°,andtheanglebetweenitswallandthe

horizontalplaneshallnotbesmallerthan70°.Theinnersideoftheanglebetweenthebunkerstwo

adjacentwallsshallbemadeintotheshapeofacirculararcwiththeradiusofthearcnotsmaller

than200mm.

5

Theratioofheighttodiameteroftherawcoalbunkershallbesmallerthan5∶1.

6

Incoldregions,iftherawcoalbunkerismadeofsteelstructure,orifitismadeof

reinforcedconcreteandisclosetothefactoryexteriorwallorexpo專用sedtotheoutdoors,itswalls

shallbeequippedwithanti-freezingandinsulatingmeasures.

7

Rawcoalbunkershallbeequippedwithlevelindicatororelectronicscale.

3.7.5

Coalpulverizershallcomplywiththefollowingrequirements:

1

Sealedcoalfeedingdevicewithmeasuringfunctionshallbeinstalledbetweentherawcoal

bunkerandthecoalpulverizer.Theshortentryductofthecoalpulverizershouldbeequippedwith

wearliner.

2

Newlyconstructedpulverizedcoalpreparationsystemshoulduseverticalmedium-speed

pulverizer.

3

Thedesignshouldnotincludeastandbycoalpulverizer,andtheavailabilityofthecoal

pulverizershallbecalculatedasper80%-85%.

4Themaximumtemperatureattheexitofthecoalpulverizershallbedeterminedaccordingto

thecoaltypeandthepulverizedcoalpreparationprocess.Astothecoalpulverizerinapulverizedcoal

preparationsystemofanthracite,itsexittemperatureshallnotbehigherthantheallowableoperating

temperatureofthecoalpulverizerandthepulverizedcoalcollector.Astothecoalpulverizerina

pulverizedcoalpre人人文庫(kù)parationsystemofothertypesofcoal,itsmaximumexittemperatureshallcomply

withtherequirementsstipulatedinTable3.7.5.

Table3.7.5Maximumtemperatureattheexitofthecoalpulverizer

PulverizedcoalpreparationprocessConditionofrawcoalMaximumtemperature

5

IfV40%82-V±5℃

()3;

Withdirectfumedischarge<

IfV40%70℃

≥

Withself-cclinfume95℃-105℃

yg—

Note:Viscoalsvolatilemattercontentonthedryash-freebasis(%).

3.7.6

Bag-typecollectorshallcomplywiththefollowingrequirements:

1

Thedesignofbag-typecollectorpropershallcomplywiththefollowingrequirements:

·7·

1

)Itsbagmaterialshallbeanti-statictype.

2

)Itshousingshallbecapableofenduringnegativepressureof≥15,000Pa.

3

)Theventilationresistanceshallnotbelargerthan2,000Pa.

4

)Apartfrommeetinglocalenvironmentalprotectioncodes,thedustcontentoftheexhaust

3

gasshallnotbelargerthan30mg/m.

5

)Thefilteringspeedofthebagshallbe0.6m/min-1.0m/min.

6

)Theairleakagerateshallnotbelargerthan3%.

7

)Themaximumoperatingtemperatureofthedirectfumedischargesystemshallnotbe

over120℃.

8

)Itshallbeequippedwithouterthermalinsulationorfordusthopper,supplementary

heatingandthermalinsulation.

9

)Itshallbeequippedwithself-reclosingexplosionventingvalveorexplosionventingvalve

withexplosionventingdisk.

2

Airlockingdeviceshallbesetbetweenthematerialdischargingopeningofthebag-type

collectorandtheentryofthepulverizedcoalbin,whilematerialfeederandpulverizedcoalsieve

shouldbesetbetweenthemandthediameterofthescreenapertureshallbe5mm-10mm.

3

Gasusedforremovingdustfromthebag-typecollectorshallbenitrogenforpulverizedcoal

preparationsystemofblendedcoalandbituminouscoal,whilethe專用systemofanthracitemayuse

compressedair.

3.7.7

Mainexhaustfanshallcomplywiththefollowingrequirements:

1

Theairvolumeinoperatingconditionofthemainexhaustfanshallbecalculatedbasedon

themaximumairvolume,temperatureandpressureattheinletofthefan,andthevalueshallmeet

thedemandofthemaximumoutputpermachinehourofthecoalpulverizer.

2

Thefull-pressurevalueofthemainexhaustfanshallbelargerthan20%ofthecalculated

totalresistanceofthepulverizedcoalpreparationsystem.

3

Themediumminimumtemperatureattheoutletofthemainexhaustfanshallbehigh

enoughtoensurenocondensationandnoadhesionofthepulverizedcoal,anditshallbe5℃higher

thanthemediumsdewpointaswellasnotlowerthan60℃.

4

Silencershouldbesetattheoutletofthemainexhaustfanfordirectfumedischarge

process.

5

Waterdrainingunitshallbesetatthebottomoftheenclosureofthemainexhaustfanfor

self-cyclingfumeprocess.

3.7.8

Thepipeli人人文庫(kù)nesandexplosiondoorsofthepulverizedcoalpreparationsystemshallcomply

withthefollowingrequirements:

1

Thereshallbeahotairisolatingvalveonthehotairpipelinefromthefumefurnacetothe

entryofthecoalpulverizer;andbeforethehotairisolatingvalvethereshallbeahotairbleeder

valveconnecteduptotheatmosphereanditsrelevantbleedingpipeline.

2

Thedesignofthepipelinelayoutandstructureshallexcludethepossibilityofpulverized

coalaccumulatinginsidethepipeline.Forthepipelinebetweenthecoalpulverizerandthebag-type

collector,thevelocityofthematerialshouldbeintherangeof15m/sto18m/s;forthepipeline

betweenthebag-typecollectorandthemainexhaustfan,thevelocityofthematerialshouldbein

therangeof15m/sto25m/s.

·8·

3

Theanglebetweentheair/pulverizedcoalmixturepipelineattheexitofthecoalpulverizer

andthehorizontalplaneshallnotbesmallerthan45°.

4

Theanglebetweenthepulverizedcoalpipelineunderthebag-typecollectorandthe

horizontalplaneshallnotbesmallerthan60°,andthebendingradiusofanybendthereshallnotbe

smallerthan3timesthenominaldiameterofthepipe.

5

Thepulverizedcoalpipelineshouldbeconnectedbyweldinginsteadofflange.

6

Themanholes,handholesandinspectionholesofthepulverizedcoalpreparationsystemas

wellasitsrelatedairpipelineandfumepipelineshallbeequippedwithlockingdevice.

7

Todesignthestrengthandsupportingstructureoftheequipmentsandpipelineswhichare

equippedwithexplosiondoor,theirexternalloadshallincludethemaximumreactionforce

generatedbytheactionoftheexplosiondoor.

8

Thepulverizedcoalchuteunderthebag-typecollectorandthepipelinesattheentryand

exitofthemainexhaustfanmaybeequippedwithisolatingvalveorcontrolvalve;thepositionof

thevalveshalleliminatethepossibilityofpowderaccumulationandthevalveshallbeplacedona

verticalpipe.Otherpipelinesforconveyingpulverizedcoalshallnothaveisolatingvalveorcontrol

valve.

9

Thepulverizedcoalbin,thecoalpulverizerandthebag-typecollectorofpulverizedcoal

preparationsystemshallbeequippedwithemergencynitrogencharg專用ingpipelineandrelatedvalve

(s)exceptforthepreparationsystemofanthracite.

10

Astotheexplosiondooronthepipelinesofthepulverizedcoalpreparationsystem,the

reducedmaximumpressureshallbeusedforitsdesign;thecoalfeederandthecoalfeedingpipe,the

pulverizedcoalfeeder,theairlockshallbeabletowithstandaninternalexplosionpressurenotless

than40kPa;astootherequipments,pipelinesandpartsapartfromthosementionedabove,they

shallbeabletowithstandaninternalexplosionpressureof150kPa.

11

Thedesignoftheexplosiondoorshallcomplywiththefollowingrequirements:

1

)Astothecalculationofthetotaleffectiveventareaoftheexplosiondoorsonthepipeline

ofthepulverizedcoalpreparationsystem,theratioofventareatovesselvolumeshallnot

23

besmallerthan0.025m/mandthesystemvolumeshallnotincludethevolumeofthe

pulverizedcoalbin;astotheexplosiondooronthepulverizedcoalpipelineneartheexitof

thecoalpulverizer,itseffectiveventareashallnotbesmallerthan70%ofthecross

sectionalareaofthepulverizedcoalpipelinethere.

2

)Theexplosiondoorshallbesetneartheequipmentorpipelinetobeprotected,andits

positions人人文庫(kù)hallpreventtheexplosiongasfromspurtingouttoanyoperationallocationor

walkway.Ifitisimpossibletomeetthisrequirement,ventductshallbeusedforthe

explosiondoor.

3

)Astotheexplosiondoorwithventduct,thelengthofentryductshallnotbelargerthan

2timestheequivalentdiameteroftheexplosiondoorandnotbelargerthan2m;thecross

sectionalareaoftheventductshallnotbesmallerthanthecrosssectionalareaofthe

explosiondoor.

4

)Whentheentryductofexplosiondoorisarrangedobliquely,theanglebetweentheduct

indoorsandthehorizontalplaneshallnotbesmallerthan45°,andtheanglebetweenthe

ductoutdoorsandthehorizontalplaneshallnotbesmallerthan60°.

·9·

5

)Astoanydiaphragm-typeexplosiondoorinstalledoutdoors,theanglebetweenthe

diaphragmandthehorizontalplaneshallnotbesmallerthan10°;astoexplosiondoorof

gravitytypeorothertypesinstalledoutdoorswithautomaticopeningandclosing,the

anglebetweenthedoorpanelandthehorizontalplaneshouldbeintherangeof10°-45°.

12

Ifthereisnoexplosiondooronthepipelineofthepulverizedcoalpreparationsystem,the

pipelineshallbeabletowithstandaninternalexplosionpressureof350kPa.

3.8PulverizedCoalInjectionSystem

3.8.1

Theprocessofthepulverizedcoalinjectionsystemshallcomplywiththefollowing

requirements:

1

Thepulverizedcoalinjectionsystemshallusedirectinjectionprocess.

2

Theconveyingconcentrationofthepulverizedcoalshallnotbesmallerthan20kgsolid/kggas.

3

Thepulverizedcoalinjectionsystemshalluseparalleltanksinjectionorserialtanks

injection.

4

Thedesignofthesystemofparalleltanksinjectionshallcomplywiththefollowing

requirements:

1

)Thereshallbemanualvalve,pneumaticvalveandflexibleconnectionbetweenthe

injectiontanksandthepulverizedcoalbin.

2專用

)Whentheeffectivevolumeoftheinjectiontankmeetstherequirementthattheinjection

timeofthepulverizedcoalinitislongerthan1.25-1.40timesthecycletimeofcoal

chargingoperation,thereshallbetwoinjectiontanksinparallelarrangement.

3

)Whenlarge-volumeblastfurnacewithagreatdemandofinjectedcoalusesparalleltanks

injection,iftheinjectiontimeguaranteedbytheeffectivevolumeofitsinjectiontankis

shorterthan1.25-1.40timesthetimeneededforthewholeoperationofcoalcharging,

thereshallbethreeormoreinjectiontanksinparallelarrangement.

5

Thedesignofthesystemofserialtanksinjectionshallcomplywiththefollowing

requirements:

1

)Thesystemshallbecomposedofthepulverizedcoalbin,thestoragetankandtheinjection

tank.Theeffectivevolumeoftheinjectiontankshouldbe20%-30%largerthanthe

effectivevolumeofthestoragetank.

2

)Thereshallbemanualvalve,pneumaticvalveandflexibleconnectionbetweenthe

pulverizedcoalbinandthestoragetank;thereshallbemanualvalve,pneumaticvalveand

pressure人人文庫(kù)balancedmetalbellowbetweentheinjectiontankandthestoragetank.

6

Theinjectiontankshallbeequippedwithelectronicscaleandcalibrationdevice.

7

Theinjectiontankshallbeequippedwithmechanismthatpreventstheinjectiontankfrom

displacement.

3.8.2

Safetyandexplosionpreventionmeasuresofthepulverizedcoalinjectionsystemshall

complywiththefollowingrequirements:

1

Whentheblastfurnaceusesanthraciteforinjection,thestoragetankofserialtanks

injectionandtheinjectiontankmayworkinnon-inertatmosphere.Compressedairmaybeusedas

thegasforpressurizationandfluidizationofthestoragetankofserialtanksinjectionandthe

injectiontank,aswellastheconveyinggasintheinjectionpipeline.

·10·

2

Whentheblastfurnaceusesblendedcoalorbituminouscoalforinjection,thestart,running

andstopofthestoragetankofserialtanksinjectionandtheinjectiontankshallbecarriedoutin

inertatmosphere.Itmustusenitrogenasthegasforpressurization,pressurereplenishingand

fluidizationofthestoragetankofserialtanksinjectionandtheinjectiontank;theconveyinggasof

theinjectionpipelinemayusecompressedairornitrogen.

3Whentheblastfurnaceusesblendedcoalorbituminouscoalforinjection,ifanyofthe

followingscenarioshappens,theinjectionpipelinesusingcompressedairastheconveyinggasmust

stopinjectionorswitchtonitrogenastheconveyinggas:

1)Thetanktoppressureoftheinjectiontankislowerthantheconveyingpressureattheexitof

theblendingunit;

2)Thetemperatureinsidethestoragetankofserialtanksinjectionortheinjectiontankis

higherthanthesetupupperlimit;

3)Thepressureofthecompressedairislowerthanthesetuppressure.

3.8.3

Pulverizedcoalbinshallcomplywiththefollowingrequirements:

1

Thepulverizedcoalbinshallbeabletostoreenoughpulverizedcoaltocoveronesmelting

cycleoftheblastfurnacewhenthecoalpulverizerofthepreparationsystemhasafailure.Ifthe

preparationsystemhasmultiplecoalpulverizerstoprovidepulverizedcoalforonesetofblast

furnace,thevolumeofthepulverizedcoalbinshallbecalculatedba專用sedontheconditionthatone

coalpulverizerhasafailure.

2

Thepulverizedcoalbinshallbetightlysealedandhaveasfewopeningsaspossible.Open-

stylebinshallnotbeused.Thepartwhichchargesthepulverizedcoalintothebinmusthaveair-

lockingfunction.

3

Theinnersurfaceofthepulverizedcoalbinshallbeflatandsmooth,aswellaswithoutthe

possibilityofpowderaccumulation.Thegeometryandstructureofthebinshallenablethe

pulverizedcoaltoflowdownsmoothly.

4

Theanglebetweenthewallofthepulverizedcoalbinandthehorizontalplaneshallnotbe

smallerthan65°.Whennon-cylindricalpulverizedcoalbinisused,theanglebetweenthe

intersectinglineofitstwoadjacentwallsandthehorizontalplaneshallnotbesmallerthan60°;and

theinnersideoftheanglebetweenitstwoadjacentwallsshallbemadeintotheshapeofasmooth

circulararcwiththeradiusofthearcnotsmallerthan200mm.

5

Theratioofheighttodiameterofthepulverizedcoalbinshallbesmallerthan5∶1.Non-

cylindricalpulverizedcoalbinusesitsequivalentdiameterasthereferencevalue.

6

Pulverized人人文庫(kù)coalbinshouldbeequippedwithelectronicscale.

7

Astotheblastfurnacewhichonlyusesanthraciteforinjection,itspulverizedcoalbincan

bedesignedaccordingtonon-pressurevessel.Pulverizedcoalbinforinjectionofbituminouscoalor

blendedcoalcanbedesignedaccordingtonon-pressurevesselifitmeetsthefollowingworking

conditions:

1

)Thefluidizationdeviceinstalledattheexitofthepulverizedcoalbinusesnitrogenasthe

fluidizinggas.

2

)Theupperpartofthepulverizedcoalbinisequippedwithnitrogenchargingdevicewith

pressure-stabilizingcontrolsystem.Thenitrogeninletductisparalleltothedispersion

airflowatthetopcoverofthepulverizedcoalbin.

·11·

3

)Thepulverizedcoalisequippedwithaseparatebin-topbag-typedustfilterwiththefull

pressureofitsfansmallerthan1kPa.Ifthepulverizedcoalbinisnotequippedwithabin-

topbag-typedustfilter,itshallbeequippedwithapressurereliefdevice.Thereleasedgas

shallbeledtotheoutdoorsthroughanoutletduct.Theareaoftheoverpressurerelief

23

doorshallbedesignedaccordingto0.025m/m,anditsratedactuatingpressure

accordingto1kPa-10kPa.

4

)Thepulverizedcoalbinshallhavethefunctionoftemperaturemeasuringandalarming

whenthetemperaturegoesbeyondthelimits.

5

)Thepulverizedcoalpreparationsystemisdesignedaccordingtodryinertgas;andoxygen

contentmonitoringapparatusisinstalledinsidethepulverizedcoalbin,andtheoxygen

contentinsidethebinshallcomplywiththerequirementsinTable3.7.2.

8

Ifthepulverizedcoalbinforinjectionofbituminouscoalorblendedcoalcannotmeetallthe

workingconditionsstipulatedinItem7,oriftheuserhasspecialrequirements,thebinshallbe

designedaccordingtosilo,aswellasabletowithstandaninternalexplosionpressureof150kPa.

9

Ifthepulverizedcoalbinisnotequippedwithbin-topbag-typedustfilter,itshallbe

equippedwithfixedmoistureabsorptionpipewithremoteoperatedisolatingvalve.

10

Coalchargingpipesandvalves(ingroup)shallbeinstalledbetweenthelowerpartofthe

pulverizedcoalbinandtheinjectiontank.Thenumberofthecoalch專用argingpipesshallbethesame

asthenumberofthepulverizedcoaltanks.Theanglebetweenthepipeandthehorizontalplane

shouldnotbesmallerthan65°.Threevalvesshallbeinstalledoneachcoalchargingpipe:one

manualvalveonthetop,onepneumaticvalveinthemiddle,andanotherpneumaticvalveonthe

bottom.

11

Topreventthetemperatureofthepulverizedcoalinsidethepulverizedcoalbinfrom

droppingdowntodewpoint,outerthermalinsulationmeasuresshallbetakenforthebinandsteam

supplementaryheatingshallbeusedforthelowerconesection.

12

Thepulverizedcoalinsidethepulverizedcoalbinshallbeclearedoutbyinjectionina

timelymanner.Itisnotallowedtohavepulverizedcoalstoredinsidethebinduringmaintenance.

3.8.4

Injectiontank(includingstoragetankofserialtanksinjection)shallcomplywiththe

followingrequirements:

1

Injectiontank(includingstoragetank)shouldnotbeequippedwithexplosiondoor.Ifthe

injectiontank(includingstoragetank)operatesundertheconditionsstipulatedinArticle3.8.2of

thisStandard,itsdesignpressurecanbecalculatedaccordingtothefollowingformula:

PP

人人文庫(kù)s=(1.2-1.35)gd(3.8.4-1)

P

Where:s—Thedesignpressureoftheinjectiontank(MPa);

P

gd—Thetanktoppressurewhentheinjectiontankworksnormally(MPa);

1.2-1.35—Coefficient,blastfurnacesoflargevolumeusethelowerlimit,andblastfurnacesof

smallvolumeusetheupperlimit.

2

Iftheinjectiontankforbituminouscoalorblendedcoalinjectioncannotoperateunderthe

conditionsstipulatedinArticle3.8.2,oriftheuserhasspecialrequirements,theinjectiontank

(includingstoragetank)shallbedesignedaccordingtothemaximumexplosionpressure.

3

Thetanktoppressurewhentheinjectiontankworksnormallycanbecalculatedaccording

tothefollowingformula:

·12·

PPPPP

gd=r+Δz+Δdq+Δζ(3.8.4-2)

P

Where:gd—Thetanktoppressurewhentheinjectiontankworksnormally(MPa);

P

r—TheBFhotblastpressure(MPa);

P

Δz—Thetotalresistancelossofthetwo-phaseflowconveyanceintheinjectionpipeline

(MPa);

P

Δdq—Thepressuredifferencebetweenthetanktopandthestartpointoftheconveying

pipeline(MPa);

P

Δζ—Thelocalresistancelossvalueinthepipelinesystem(MPa).

4

Theinnersurfaceoftheinjectiontankshallbeflatandsmooth,aswellaswithoutthe

possibilityofpowderaccumulation.Theinjectiontankshallbeequippedwithwell-functioning

fluidizingdevicetomakesurethatthepulverizedcoalcanflowdownsmoothly.

5

Theanglebetweenthewallsurfaceoftheconesectionandthehorizontalplanshallnotbe

smallerthan65°inprinciple.

6

Injectiontankshallbeequippedwithcoalchargingvalve,pressurechargingvalve,pressure

dischargingvalve,pressurereplenishingvalve,fluidizingvalve,exitvalve,secondarygas

replenishingvalve,etc.Amongthesevalves,thecoalchargingvalve,pressurechargingvalveand

pressuredischargingvalveshallusepneumaticon/offvalve;thepressurereplenishingvalve,

fluidizingvalveandsecondarygasreplenishingvalveshalluse專用on/offvalvewithautomatic

regulatingfunction.

7

Injectiontankshallbeequippedwithelectronicscaleandcalibrationdevice.

8

Astoserialtanksinjection,theinjectiontankandthestoragetankshallbeequippedwith

mechanismthatpreventsthemfromdisplacementandguaranteesthecenteringoftheinjectiontank

andthestoragetank.

9

Temperaturemeasuringapparatusshallbeinstalledinsidethepulverizedcoaltank,andthe

temperatureofthepulverizedcoalinsidethetankshallnotgobeyondthesettemperature.

10

Withindirectinjectionprocess,thepressuredischarginggasoftheinjectiontankcanbe

dischargedtothebin-topbag-typefilterabovethepulverizedcoalbin;withdirectinjectionprocess,

thepressuredischarginggasoftheinjectiontankcanbedischargedtotheentryofthebag-type

collector,orthebin-topbag-typefilterabovethepulverizedcoalbin,ortheinsideofthepulverized

coalbinequippedwithbin-topbag-typefilter.Thebleedingpipelineshallbeequippedwithequal

flowdischargingvalveorotherkindsofflowlimitingdevice.

11

ThemeasuringmethodofthequantityofinjectedcoaltoBFshallcomplywiththe

followingrequirem人人文庫(kù)ents:

1

)Astoparalleltanksinjectionsystem,theaccumulatedtimesofcoalchargingofinjection

tankandtheadjustedweighingvalueofpulverizedcoalofeverytankshallbeusedfor

calculation;

2

)Astoserialtanksinjectionsystem,theaccumulatedtimesofcoalchargingofstoragetank

andtheadjustedweighingvalueofpulverizedcoalofeverytankshallbeusedfor

calculation.

12

Thedesign,manufacture,erection,maintenanceandservicingofinjectiontank(including

Steel

storagetankofserialtanksinjection)shallcomplywiththecurrentnationalstandardsGB150

PressureVessels

andrelevantcurrentnationalrequirementsofSupervisionRegulationonSafety

·13·

TechnologyforStationaryPressureVessel.

3.8.5

Pulverizedcoalinjectionpipelineshallcomplywiththefollowingrequirements:

1

Thepulverizedcoalinjectionpipelineshallusecollectionpipelinetransportation.The

collectionpipelineshallbranchthroughadistributorbeforetheblastfurnaceintoseveralbranch

pipelineswhichshallhavethesamenumberasthetuyeres.

2

Thecollectionpipelinetransportationshouldbeapplicabletoparallelandserialtanks

injection.

3

Multiplebranchpipelinestransportationshouldbeapplicabletoserialtanksinjection

systemwithaconveyingdistancenotlongerthan200m.

4

Thediameterofthecollectionpipeforpulverizedcoalinjectionshallbedetermined

accordingtotheconcentrationofthepneumaticconveyingandtheactualvelocityatthebeginning

endinworkingconditionwhenthequantityofinjectedcoalisdecided.

5

Theinjectionsystemshallhavethefollowingfourkindsofgasusedforinjection:

1

)Gasforpressurechargingoftheinjectiontank.

2

)Gasforpressurereplenishingoftheinjectiontank.

3

)Gasforfluidizingoftheinjectiontank.

4

)Gasforinjectionorsecondarygasreplenishing.

6

Thereshallbeaverticalpipesectionof6mbeforetheconnectionpointofthecollection

;專用

pipewiththedistributortheerectionofthebranchpipesinthearrangementoftop-to-bottomshall

makesurethatthesebranchpipeshavemoreorlessanequalequivalentlength.

7

Structurally,thepulverizedcoaldistributorshallbeabrasion-resistantandenableaneven

distribution.

8

Thecollectionpipeandthebranchpipesforpulverizedcoalinjectionshallbeequippedwith

switchvalves.Whenthepressurebeforetheswitchvalvedropslowerthanthesetuppressure

value,therouteforcoalinjectionshallbeautomaticallycutoffandbypasspipelinegasshallbe

automaticallyopened.

9

Thebranchpipesforinjectionshallbeequippedwithpurgingsystem.

10

Thecollectionpipelineforconveyingandallthebranchpipelinesshallbewellgrounded.

11

Theradiusofcurvatureofanybendingonthecoalinjectionpipelineshallbelargerthan

20timesthediameterofthepipeline.

3.8.6

Pulverizedcoalinjectionlanceshallcomplywiththefollowingrequirements:

1

Pulverizedcoalinjectionlanceshouldhaveitspositionadjustableandbeequippedwithhot

blastcheckdevice人人文庫(kù)andbeobliquelyinsertedin.

2

Thefrontpartofthepulverizedcoallanceshallusemater