聚丙烯工艺描述

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H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度UNIPOL™PPProcessDescriptionUNIPOL™PP工艺过程描述1DescriptionoftheContractPlant合同工厂描述2UNIPOLPPProcessUnitUNIPOL聚丙烯工艺装置3AuxiliaryProcessFacilities辅助工艺装置UNIPOL™PPPROCESSDESCRIPTIONUNIPOL™PP工艺过程描述1DescriptionoftheContractPlant合同工厂描述TheContractPlantconsistsofapolypropyleneprocessunitdesignedtoproduce400KTAofpelletedpolypropylenefrompropylenebasedonUNIPOL™PPTechnologylicensedbyUnionCarbideChemicals&PlasticsTechnologyLLC,asubsidiaryofTheDowChemicalCompany.TheUNIPOLPPProcessisalow-pressuregas-phasefluidizedbedprocessforthemanufactureofPPresins.合同工厂包含一套基于UNIPOL™PP技术的生产40万吨/年的聚丙烯工艺装置,该技术转让自陶氏化学公司下属的联合碳化物(

1H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度联碳)化学和塑料技术公司。UNIPOL™PP工艺技术是一项用于生产聚丙烯树脂的低压气相流化床工艺。InadditiontotheUNIPOLPPProcess,resinhandlingandblendingfacilitiesarealsoincludedintheContractPlantbatterylimits.Otherauxiliaryfacilitiesincludeutilitydistribution,flareandplantinfrastructuresystems.ThePDPprovidesadequateinformationtoallowthesesystemstobeeasilydesignedbytheEngineeringContractor,resultinginsavingstotheLicensee.TheproductbaggingareaisoutsidetheContractPlantbatterylimitsandwillbedesignedbytheLicensee.在UNIPOL™PP工艺之外,树脂处理和掺混也包括在本合同工厂范围之内.其它辅助工艺设施包括公用工程分配,火炬,工厂基础设施。工艺包提供了足够的信息使工程承包商能很容易的设计这些系统,从而使专利受让方节省投资.产品包装区域是在合同工厂之外,由该技术买方设计。2UNIPOLPPProcessUnitUNIPOL聚丙烯工艺装置TheUNIPOLPPplantISBLiscomprisedofthefollowingprocessareas.UNIPOL聚丙烯工厂界区由下列工艺单元组成:A.RawMaterialSupplyandPurification原料供应和精制B.PropylenePurification　丙烯精制

2H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度C.Reaction聚合反应D.ResinDegassing树脂脱气E.VentRecovery尾气回收F.ResinAdditiveHandling添加剂的加入G.Pelleting造粒Eachisdescribedindetailinthefollowingsections.Nocatalystpreparationisnecessary–SHAC™catalystisdeliveredtotheplantreadytouse.Nogas/solidseparationisneededduetotheuniquedesignofthereactorandproductdischargesystem.TheprocessunitslistedaboveareincludedintheLicensor’sProcessDesignPackage(PDP).每一单元都将在下面的章节详细描述．催化剂制备是不需要的,因为卖方会将直接可用的SHAC™催化剂运到工厂。由于特殊的反应器和产品下料系统的设计,也无需单独的气固分离装置．　以上所列的工艺装置都包含在专利商的工艺设计包(PDP)中．A.RawMaterialSupplyandPurification(Part1)原料供应及精制(第1部分)Ethylene,nitrogen,andhydrogenaredeliveredtothebatterylimitsbypipeline.Co-catalyst,T2,isreceivedfromvendorshippingcontainerswiththeseshippingcontainersstoredintheISBLarea.

3H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度乙烯,氮气和氢气经过管线送至界区边界。助催化剂三乙基铝则来自储存在界区内的厂商运输过来的储罐。EthylenefromBatteryLimitsiscompressedto635psigintheEthyleneCompressor(K-1003)andheatedto100°CintheEthylenePreheater(E-1006)beforepassingthroughtheCORemovalVessel(C-1008).Theethyleneisthencooleddownto40°CintheEthyleneAfter-Cooler(E-1010)beforebeingfedtotheEthyleneDryer(C-1012)forremovalofwater,miscellaneouspolarcompoundsandcarbondioxide.Finally,ethyleneispassedthroughtheEthyleneFilter(Y-1002)toremoveparticulatecontaminationbeforeitissenttothereactionarea.从界区外来的乙烯先经过乙烯压缩机(K-1003)压缩至635psig,然后经过乙烯预热器(E-1006)加热至100°C,再进入脱一氧化碳床(C-1008)。然后乙烯经过乙烯后冷却器(E-1010)冷却至40°C,再经过乙烯干燥器(C-1012)以除去水、各种极性成分和二氧化碳。最后,乙烯再经乙烯过滤器(Y-1002),去掉颗粒杂质,而后才被送至反应系统。Nitrogenisreceivedfromtheboundarylimitsandtheflowissplitbetweendifferentendusers.NitrogennotrequiringpurificationispassedthroughaFilter(Y-1101)beforebeingsenttotheprocess.Purificationbed

4H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度regenerationnitrogenisfeddirectlytotheN2RegenerationHeater(E-2114)withoutpurificationorfiltration.NitrogenforbothPurifiedandHighPressurePurifiedendusesispassedthroughtheNitrogenDryer(C-1112)toremovewater.FromtheDryeroutlet,NitrogenpassesthroughtheNitrogenFilter(Y-1115)toremoveparticulatecontamination.AportionofthisfilterednitrogenisfedtoasmallboosterCompressor(K1102)whichisusedtoincreasethepressureofthenitrogentoitsnormaloperatingpressureofabout660psig(4,551kPag)forfeedtothePPreactionsystem.HighpressurenitrogenispassedthroughaFilter(Y1116)toremoveparticulatecontaminationpriortobeingfedtotheprocess.由界区外来的氮气分流至不同的最终用户。不需要精制的氮气,只需在送至工艺区之前经过过滤器(Y-1101)。精制床再生氮气不需要经过精制或过滤就可直接送到氮气再生加热器(E-2114)。需要精制的氮气和高压精制的氮气会经过氮气干燥床(C-1112)去除水。从干燥床出来的氮气经过氮气过滤器(Y-1115)去除颗粒杂质。这股过滤氮气的一部分会进入一个小的压缩机(K-1102),升高氮气的压力至进入聚丙烯反应系统的正常操作压力660psig(4,551kPag)。高压但其在进入工艺系统之前经过一个过滤器(Y-1116)去除颗粒杂质。

5H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度HydrogenfromtheboundarylimitsispassedthroughtheMethanatorHeater(E-1204)whichincreasestheHydrogentemperaturetobetween100°Cand150°C.Atthattemperature,theHydrogenenterstheMethanator(C-1205)fortheremovalofcarbondioxideandcarbonmonoxide.ThecatalystcontainedintheMethanatorconvertstheCOandCO2toMethaneandWater.MethaneisaninertinUNIPOLReactor.TheHydrogenleavingtheMethanatoriscooledintheMethanatorAftercooler(E1206).FromtheAftercooler,HydrogenpassesthroughtheHydrogenDryer(C-1207)fortheremovalofboththewatercontainedintheincomingHydrogenandthatformedthroughtheMethanationreaction.ThehydrogenthenpassesthroughtheHydrogenFilter(Y-1211)toremoveparticulatecontaminantsbeforeitissenttothereactionsystem.来自界区的氢气经过甲烷化预热器(E-1204)将氢气温度升至100°C至150°C之间。在此温度下,氢气进入甲烷转化器(C-1205)去除二氧化碳和一氧化碳。在甲烷转化起中的催化器将一氧化碳和二氧化碳转化成甲烷和水。甲烷在UNIPOL反应器中是一种惰性气体。离开甲烷转化器的氢气在甲烷化后冷却器(E-1206)中进行冷却,然后氢气经过氢气干燥器(C-1207)

6H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度去除进料氢气中所含的水和在甲烷化反应中生成的水。脱水后的氢气然后经过氢气过滤器(Y-1211)除去颗粒杂质,然后进入反应系统。LiquidT2isfedundernitrogenpressurefromitsrespectiveshippingcontainerstotheliquidfullT2FeedPot(C-1505).ThefeedpothasatwohourholdtimeandisequippedwithlevelindicationtoindicatewhenT2containerchangeoutisrequired.FromtheT2feedPottheliquidT2flowstotheAlkylchargepumps(G-1503/G-1504).Thepumpsbuildpressuretoroughly3.9MPagforfeedingtheH/RReactorsand3.1MPagforfeedingtheImpactReactor.Allventsfromthesystemareroutedtosealpot(C-1502)equippedtotrapemissionsforlaterdisposal.液态三乙基铝在氮气压力下从其运输罐进入烷基铝进料罐(C-1505)。该进料罐有两小时的保持时间并装有料位计以便了解何时容器排空。三乙基铝从进料罐进入烷基铝送料泵(G-1503/G-1504)。送料泵将压力增至3.9MPa(表压)以进入抗冲共聚反应器,增至3.1MPa(表压)以进入均聚和无规共聚反应器。系统中的排放物都收集在密封罐(C-1502)中,等待将来进一步处理。Amineraloilsystemconsistingofadrumpump(G-1514)andblowtank(C-1512)isprovidedforflushingelementsoftheAlkylsystempriortomaintenance.Wastemineraloil/AlkyliscollectedintheSealPot(C-1502).Periodically,the

7H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度SealPotisdrainedandrechargedwithfreshmineraloil.Thedrainedmineraloil/Alkylmixtureistransferredtodisposaltanksforoffsitedisposal.在进行维修之前,会使用一个由回转泵(G-1514)和矿物油卸料罐(C-1512)组成的矿物油系统来冲洗烷基铝系统。废矿物油/三乙基铝收集在密封罐(C-1502)中,密封罐定期的排放并重新注入新鲜的矿物油。排放的废矿物油/三乙基铝混合物将转移到处理罐送到界区外处理。B.PropylenePurification(Part2)丙烯精制(第2部分)FacilitiesareprovidedtopurifyandpumppropylenetotheReactor.Traceamountsofcatalystpoisons,suchaswater,oxygen,carbondioxide,carbonmonoxide,alcohols,andketonesarereducedtoacceptablelevelsinthePurificationSystem.这部分包括精制液态丙烯以及将丙烯泵入反应器的设施。微量的反应毒物例如水,氧,二氧化碳,一氧化碳,乙醇和酮等在精制系统内被减至聚合反应能够接受的水平。LiquidpropylenefromthebatterylimitsfeedsdirectlyintothePropyleneDegassingColumn(C).Thecolumnisequippedwithawater-cooledCondenser(E)andasteam-heatedReboiler(E).CoolingwaterpressurefortheCondenserisboostedwiththeDegassingColumnCondenser

8H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度WaterPump(G-).Asmallstreamofoverheadgas,containingpropyleneandstrippedlightcontaminants(O2,CO,CO2,etc.),isventedtobatterylimits.ThebottomproductpassesthroughthePropyleneCooler(E).FromthecoolerthepropylenepassesthroughoneoftwoPropyleneDryers(C-andC-)forremovalofanytracewaterandotherremainingpolarcompounds.液态丙烯从界区边界直接进入丙烯脱气塔(C-)。塔上装有一台水冷的冷凝器(E-)和一个蒸汽加热的再沸器(E-)。冷凝器的冷却水靠脱气塔冷凝水泵(G-)泵出。一小股含有分离出的轻组分杂质(氧气、一氧化碳、二氧化碳等)的塔顶馏出气体被送出界区。塔底排出物则流经丙烯冷却器(E-)。经过丙烯冷却器后,丙烯直接进入两台丙烯干燥床(C-,C-)中的一台去除任何残存的痕量水和其它残留的极性化合物。Followingpolarimpurityremoval,thepropylenepressureisboostedbythePropyleneChargePump(G).ThepropyleneisthenfilteredthroughthePropyleneFilter(Y2020)forremovalofparticulatecontaminantsandflowsforwardtotheReactionSystem.在脱除了丙烯中的极性杂质后,接着使用丙烯加料泵(G-)增加丙烯压力。丙烯然后经过丙烯过滤器(Y-2020)以去掉颗粒杂质,进入反应系统。

9H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度NitrogenfromthesupplyheaderisheatedbytheRegenerationHeater(E2114)totherequiredtemperatureforregenerationofthepurificationbedsinPart1andPart 2.从供应源头来的氮气由再生加热器(E-2114)加热至第一和第二部分的精制床再生需要的温度。ThePropylenePurificationareadesignwillincludeadrainlinefromeachpurificationbedwhichwillallowpropyleneinthepurificationbedstobedrainedbacktothedegassingcolumnpriortoregeneration,priortoremovingabedfromservice,orforotheroperational/maintenancereasons.Thedegassingcolumn(attheoutletofthePropyleneCooler)willalsohaveadrainlinetotheOSBLtoalsoallowthedrainingofpropylenefromthecolumnforsimilaroperational/maintenancereasons.TheLicensorsstandardpracticefordrainingpropylenefromequipmentuseshighpressurenitrogen.丙烯精制区的设计将为每个精制床安装一条排放线,这样就能够将精制床里所含的任何丙烯在再生、床层停止操作、或任何其它操作/维护活动之前送回到脱气塔。基于同样的原因,(位于丙烯冷却器输出端的)脱气塔本身也会配有一条排放线,

10H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度以便把丙烯排向界区外。专利转让方的标准操要求在排放设备中的丙烯时使用高压氮气。C.Reaction(Part4A)–聚合反应(第4A部分)ThepolymerizationreactiontakesplaceinafluidizedbedReactor(C4001)atanominalpressureof3.38MPagandanominaltemperatureofaround67° C.CatalystandreactantsarefedcontinuouslytotheReactor,andthegranularproductisremovedintermittently.ReactantsinthevaporphasearecontinuouslycycledfromthereactorthroughacentrifugalCycleGasCompressor(K4003)andwater-cooledCycleGasCooler(E4002)andbackthroughthereactionbed.Thiscyclegasflowservestofluidizethereactionbedforgoodbackmixing,supplyrawmaterialstoreactionsites,andremoveheatgeneratedbytheexothermicpolymerizationreaction.聚合反应是在流化床反应器(C-4001)内在3.38MPa(表压)的公称压力和约67ºC的公称温度下发生。催化剂和反应物被连续加入反应器,而产品粉料则以批次的方式被移出反应器。气相中的反应物不断地离开反应器,经过离心式循环气压缩机(K-4003)和水冷的循环气冷却器(E-4002),再回到反应器。这股循环气的功能包括对反应器中的固体床层进行流化以达到充分的返混、将原料带入反应器,并移走聚合反应放出的反应热。

11H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度Resinpropertiesarecontrolledprimarilybythetypeofcatalystusedandbycyclegascomposition.ThecomputercanmaintainclosedloopcontroloftheresinpropertiesintheReactorbymakinginstantaneouspredictionsoftheresinpropertiesinthereactorandadjustingvariablesasnecessary.Resinpropertiesdonotvarywithproductionrate.反应器所生产的树脂的性质主要是由所使用的催化剂种类以及循环气组成来决定的。计算机能够经过即时地对在反应器中的树脂性质进行预测并在必要的情况下对反应器变量做出调整来维持对树脂性质的闭环控制。树脂性质并不随产率的变化而变化。TheReactorisaskirt-supportedvesselwithanexpandedtopsectionfordisengagementofsolidsfromthecyclegasstream.反应器有塔裙支持,顶部有一个扩大段,用于更好地分离循环气流中的固体。TheCycleGasCompressorisasingle-stage,constant-speed,centrifugalcompressorwithadoubledrymechanicalseal.Thetypicaloutletpressurefromthecyclegascompressoris3.48MPag.Thecyclegascirculationflowrateiscontrolledbyeitherinletguidevanesordischargethrottlingonthedischargepipingofthemachine.The

12H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度CycleGasCompressormaintainstheoptimalsuperficialgasvelocityforallproductsthroughthecyclegasloop.循环气压缩机是单段、定速、离心式、使用双层干机械密封的压缩机。该压缩机的典型出口压力为3.48MPa(表压)。循环气的循环速率是由压缩机的进口阀门或是出口管节流阀来控制的。对所有产品床层,循环气压缩机可保持最佳的表观气体速度。TheCycleGasCoolerisasinglepassshellandtubeheatexchanger.Cyclegasflowsthroughthetubesandcoolingwatercirculatesthroughtheshellside.ApumpbackwatersystemprovidesreactortemperaturecontrolbyrecirculatinghotcoolingwaterdischargedfromtheshelloftheCycleGasCoolerandrecyclingitbacktomixwiththefreshincomingcoolingwatersupplytotheexchangerusingtheCycleWaterPump(G4004).TheCycleGasCoolerisalsousedasaheaterforreactionstart-upbyinjectingsteamthroughaspargerintothecoolingwaterinletoftheCycleGasCooler.循环气冷却器是单程的管壳式换热器。循环气从管内流过,而冷却水则从壳层流过。反应器的温度由一个泵回流水系统控制,从循环气冷却器壳层出来的热水与新鲜的冷却水混合,一起经过循环水泵(G-4004)再泵入冷却器。在反应器启动开车时,循环气冷却器也可为加热器。此时将蒸汽从循环气冷却器的冷却水入口喷入。

13H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度Reactorpressureiscontrolledbyvaryingthepropylenefeedrate.Theconcentrationsofhydrogen,ethylene,andpropyleneinthecyclegasaremeasuredbyanon-linecyclegasanalyzer,andflowsareautomaticallycontrolledasnecessarytomaintaintherequiredcyclegascomposition.反应器压力是经过改变丙烯进料速度来控制的。循环气中氢气、乙烯和丙烯的浓度由一台在线循环气分析仪来测量,而它们的流量在必要时会自动调节,以满足所要求的循环气组成。Thepolymerizationcatalystisreceivedindrumsasaslurryinmineraloil.ADrumTilter(S-4046)isusedontheendofafork-trucktohandleandtiltthedrums.Topreventcatalystsolidsfromsettling,thedrumsarerolledontheDrumTumbler(S4045).ThedrumsareunloadedusingtheUnloadingPump(G4054)intotheSlurryFeedTank(C4040),whichhasanagitator(Y-4041).ThecatalystispumpedfromthisvesseltotheReactorbytheSlurryFeedPump(G4043).TheproductionrateiscontrolledbyvaryingtheamountofcatalystpumpedtotheReactorbycontrollingthespeedoftheSlurryFeedPump.AMineralOilDrumPump(G-4055)isprovidedtounloadmineraloilfromshippingdrumstoflushoutthesystem.MineraloilisstoredintheMineralOilStorageTank(C-4056).

14H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度聚合催化剂与矿物油混合为淤浆状,成桶装运。叉车的尾部安有一个桶罐翻转装置(S-4046),帮助倾斜和搬运这些桶。为防止催化剂沉淀,用滚桶器(S-4045)不停地转动这些桶。经过卸料泵(G-4054)将催化剂卸至带有搅拌器(Y-4041)的淤浆进料罐(C-4040)。催化剂再由淤浆进料泵(G-4043)打入反应器。产率的控制是经过控制淤浆进料泵的速度(进而控制进入反应器的催化剂的量)来实现的。使用一个矿物油回转泵(G-4055)将矿物油从运输用桶中卸出,用来冲洗该系统。矿物油储存在矿物油储存罐(C-4056)中。ProvisionsarealsomadeforadditionofdonortothecyclegassystemthroughtheAdditiveFeedPots(C4060andC-4062).DonorisunloadedfromshippingdrumsusingtheAdditiveDrumPump(G-4069).ThedonorispumpedfromthesevesselstoeitherreactorbytheAditivePumps(G-4061andG-4063).给电子体能够经过给电子体添加罐(C-4060,C-4062)加入到循环气系统中。首先用给电子体回转泵(G-4069)把给电子体从运输桶中卸下。再将给电子体经过给体泵(G-4061,G-4063)打入各个反应器。ThereactorhastwopairsofProductDischargeSystems,whichcanbeoperatedinanalternatingmodeorindependently.EachsystemconsistsoftwoProduct

15H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度ChambersandtwoProductBlowTanks.ThegranularproductdropssequentiallyfromtheProductChamber(C4101,C-4105,C-4106,andC-4107)totheProductBlowTank(C4103,C4108,C-4110,andC-4112)fromwhichitisconveyeddirectlytotheProductPurgeBin(C-5009),duringHomopolymer/Randomproduction,ordirectlytotheTransferTankFilters(Y-4312andY-4322),duringImpactproduction.反应器有两套产品卸料系统,能够交互运行,也能够独立运行。每套系统包括两个产品仓和两个产品卸料罐。产品粉料依次从产品仓(C4101,C-4105,C-4106和C-4107)进入产品卸料罐(C-4103,C-4108,C-4110和C-4112)。从那里,产品直接被送进产品接收器(C-5009,当生产均聚物和无规共聚物时)或是送往输送罐过滤器(Y-4321,当生产抗冲共聚物时)。Duringaprocessupset,thepolymerizationreactioncanbestoppedorsloweddownwiththekillsystem.ThekillinjectshundredsoftimesmoreCOthantherequiredstoichiometricamountintothereactor.TheexcessamountinsuresacompletekillevenifthemixingofCOisnotcompletelyuniform.Thekillsystemhardwareconsistsof8cylinderbottles(4inusewith4asback-up)containingModifierCat13.0-15.2MPagpressurewithasystemofdistributionpipingandmotoroperatedvalvestorelease

16H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度theModifierCintothereactorwhenthekillsystemlogicisactuated.Thecyclegasturbine(KT-4003)isusedtodrivethecyclegascompressoratareducedspeedinthecaseofelectricalfailure,lossofcyclegasflowindication,andmostcompressorshutdowns.Reactionmaybequicklyreinitiatedbypurgingthepoisonfromthebedtotheflare,therebyreactivatingthereactionofthepolymerizationcatalyst.当出现工艺故障时,能够经过”杀死系统”(或叫”反应终止系统”)使聚合反应停止或减慢。杀死系统将比正常要求的化学计量高百倍以上的一氧化碳注入反应器。过量的注入确保即使在一氧化碳混合不充分的情况下也能完全终止反应。杀死系统的硬件由8个气瓶(用4个,备4个)组成,其中装有压力在13-15.2MPa(表压)的”杀死剂”C、一套分布管道系统以及在杀死系统逻辑被触发时将”杀死剂”C注入反应器的由马达控制的阀门。当发生断电、循环气流量显示失灵以及压缩机停车时,循环气透平(KT-4003)被用来驱动循环气压缩机。想要迅速恢复反应时,将毒物从反应床排出,通往火炬,这样便能够重新激活聚合反应。TheinstrumentationnozzlesarekeptclearofresinbypurgingwithvaporizedpropylenefromthePropyleneVaporizer(E4005).

17H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度丙烯蒸发器(E-4005)送来的气态丙烯用来吹扫仪表接口,使其不被树脂堵塞。Reaction(Part4B)–(ImpactProduction)反应部分(第4B部分)-(抗冲生产)TheimpactportionofthepolymerizationreactiontakesplaceinasecondfluidizedbedReactor(C4301)atanominalpressureof2.07MPagandanominaltemperatureofaround70° C.Theimpactpolymerizationreactorreceiveshomopolymerresin,withcontainedcatalyst,intermittentlyfromtheReactorNo.1ProductDischargeSystem.Reactantsarefedcontinuouslytotheimpactreactor,andthegranularproductisremovedintermittently.ReactantsinthevaporphasearecontinuouslycycledfromthereactorthroughacentrifugalCycleGasCompressor(K4303)andwater-cooledCycleGasCooler(E4302)andbackthroughthereactionbed.Thiscyclegasflowservestofluidizethereactionbedforgoodbackmixing,supplyrawmaterialstoreactionsites,andremoveheatgeneratedbytheexothermicpolymerizationreaction.聚合反应的抗冲部分在第二个流化床反应器(C4301)中进行,公称反应压力为2.07MPag,公称反应温度约为70ºC。含有催化剂的均聚物树脂从1

18H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度号反应器的产品卸料系统间歇性地进入抗冲聚合反应器。反应物被连续注入抗冲反应器;生产出的产品粉料则以间歇方式被移走。汽相的反应物不断地从反应器进入循环气压缩机(K-4303),水冷的循环气冷却器(E-4302),再回到反应器。这股循环气的作用主要是:流化反应床层以提供良好的返混效果、将原料携带入反应部位以及为放热的聚合反应撤热Resinpropertiesarecontrolledprimarilybythetypeofcatalystusedandbycyclegascomposition.Thecomputercanmaintainclosedloopcontroloftheresinpropertiesinthereactorbymakinginstantaneouspredictionsoftheresinpropertiesinthereactor,andadjustingvariablesasnecessary.树脂性质主要是由催化剂种类和循环气组成决定的。计算机经过实时预测反应器中树脂的性质并在必要时相应地调整参数值,对反应器内树脂性质进行闭路控制。Thereactorisaskirt-supportedvesselwithanexpandedtopsectionfordisengagementofsolidsfromthecyclegasstream.反应器有塔裙支持,顶部有一个扩大段,用于分离循环气流中的固体。TheCycleGasCompressor(K-4303)isasingle-stage,constant-speed,centrifugalcompressorwithadoubledrymechanicalseal.Thetypicaloutletpressurefromthe

19H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度cyclegascompressoris2.22MPag.Thecyclegascirculationflowrateiscontrolledbyeitherinletguidevanesorsuctionthrottlingonthesuctionpipingtothemachine.TheCycleGasCompressormaintainstheoptimalsuperficialgasvelocityforallproductsthroughthecyclegasloop.循环气压缩机(K-4303)是单段、定速、离心式、使用双层干机械密封的压缩机。该压缩机的典型出口压力为2.22MPag。循环气的循环速率是由压缩机出口管控制阀来控制的。对所有经过循环气回路的产品,循环气压缩机都保持最优的表观气速。TheCycleGasCooler(E-4302)isasinglepassshellandtubeheatexchanger.Cyclegasflowsthroughthetubesandcoolingwatercirculatesthroughtheshellside.Apump-backwatersystemprovidesreactortemperaturecontrolbyrecirculatinghotcoolingwaterdischargedfromtheshelloftheCycleGasCoolerandrecyclingitbacktomixwiththefreshincomingcoolingwatersupplytotheexchangerusingtheCycleWaterPump(G4304).TheCycleGasCoolerisalsousedasaheaterforreactionstart-upbyinjectingsteamthroughaspargerintothecoolingwaterinletoftheCycleGasCooler.

20H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度循环气冷却器(E-4302)是单程的管壳式换热器。循环气从管内流过,而冷却水则从壳层流过。反应器的温控是经过使用一个(泵压回水)调节系统实现的:从循环气冷却器壳层出来的热水循环回来与新鲜的冷却水混合,一起经过循环水泵(G－4304)再泵入换热器。在反应器启动开车时,循环气冷却器也可为加热器。此时将蒸汽从循环气冷却器的冷却水入口喷入,以此加热反应气体。HomopolymerresinisfedtothereactorfromtheReactionSystemNo.1ProductDischargeSystembydensephaseconveyingtotheTransferTankFilters(Y4312andY-4322).TheresindisentrainsfromtheconveyinggaswhichpassesthroughtheTransferTankFiltertotheVentRecoverySystem(seePart5B).均聚树脂从1号反应器的产品卸料系统以密相传输的方式,经过输送罐过滤器(Y-4312或Y-4322)进入2号反应器。树脂与传输气体分离,后者经过输送罐过滤器后进入尾气回收系统(见5B部分)。TheresinflowsbygravitytotheTransferTanks(C4311andC-4321).Whentheconveyingiscomplete,theTransferTankisisolatedfromtheTransferTankFilterandpressurizedupusingcyclegasfromthedischargeoftheCycleGasCompressor.Thehomopolymerresinistransferredintothereactorbygravityflowaidedbythecompressor-to-reactor

21H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度pressuredifferential.GasremainingintheTransferTankisrecoveredintheVentRecoverySystem.树脂在重力作用下落入输送罐(C-4311或C-4321)。传送完成后,输送罐与输送罐过滤器隔离,再用从循环气压缩机输出的循环气将输送罐的压力增加。然后均聚树脂靠压缩机与反应器间压降的帮助,在重力作用下落入反应器。输送罐中的残余气体由废气回收系统回收。Thereactorhastwoproductdischargesystemswhichnormallyoperateinanalternatingmodeorcanbeoperatedindependently.EachsystemconsistsofaProductChamberandaProductBlowTank.ThegranularproductdropssequentiallyfromtheProductChamber(C4401andC4406)totheProductBlowTank(C4403andC4408)fromwhichitisconveyeddirectlytotheProductReceiver(C-5013).反应器有两套产品卸料系统,能够交互运行,也能够独立运行。每套系统包括一个产品仓和一个产品卸料罐。产品粉料依次从产品仓(C-4401和C-4406)进入产品卸料罐(C-4403和C-4408)。从那里,产品直接被送往产品接收器(C-5013)。Duringaprocessupset,thepolymerizationreactioncanbestoppedorsloweddownwiththekillsystem.ThekillinjectshundredsoftimesmoreCOthantherequiredstoichiometricamountintothereactor.Theexcessamount

22H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度insuresacompletekillevenifthemixingofCOisnotcompletelyuniform.Thekillsystemhardwareconsistsof4cylinderbottles(2inusewith2asback-up)containingModifierCat13.0-15.2MPagpressurewithasystemofdistributionpipingandmotoroperatedvalvestoreleasetheModifierCintothereactorwhenthekillsystemlogicisactuated.当出现工艺故障时,能够经过系统使聚合反应停下来或使其慢下来。杀死系统将比正常要求的化学计算量高百倍以上的一氧化碳注入反应器。过量的注入确保即使在一氧化碳混合不充分的情况下也能完全杀死反应。杀死系统的硬件由4个钢瓶(用2个,备2个)组成,其中装有压力在13-15.2MPa表压的”杀死剂”C、一套分布管道系统以及在杀死系统逻辑被触发时将”杀死剂”C注入反应器的由马达控制的阀门。D.ResinDegassing(Part5A)–树脂脱气(第5A部分)ResintransfersfromtheReactorProductDischargeSystemtotheProductPurgeBin(PPB)(C-5009)usingadensephaseconveyingsystem.Theconveyinggas,amixtureofentrainedhydrocarbons,andnitrogen,separatesfromtheresininthedisengagingspaceofthebin.Thisgas,togetherwiththereactorcyclegasvent,flowsthroughthe

23H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度ProductPurgeBinFilter(Y5010)forremovalofentrainedsolidspriortoenteringtheVentRecoverySystem.树脂经过一套密相传输系统由产品卸料系统送入产品脱气仓(C-5009)。利用接仓体的分离部分将夹带着碳氢化合物和氮气的传输气与树脂分离。这股气体,加上反应器的循环气尾气,先经过产品脱气仓过滤器(Y－5010)将其中的固体分离出来,然后再进入尾气回收系统。ThePPBconsistsofthreesections.Thetopsectionofthebinisusedforresinsurgeand/ordisengagementspacefortheconveyinggasandresin.Thebottomsectionisusedtohydrolyzeresidualalkylsusingasteam/nitrogenmixture.Themiddlesectionfunctionsasabarrierbetweenthetopandbottombinsections.ThissectionpreventssteamfrombeingcarriedupthroughthebinandintoventrecoveryandalsohelpstominimizetheamountofmonomerlostthroughthebedthatisrecoveredintheVentRecoverySystem.产品脱气仓由三部分组成。仓的顶部用来作为树脂的缓冲空间和/或输送气和树脂的分离空间。底部利用蒸汽/氮气的混和物来中和残余的三乙基铝。中间部分作为位于顶部和底部的一个缓冲。这一部分能够阻止蒸汽被携带出仓体进入尾气回收,同时能够帮助经过床体在尾气回收单元回收的单体量最小,

24H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度Arecycledlightsvent(ormake-upnitrogen)fromventrecoveryisinjectedintothetopinternalconeofthePPB,andsweepsinterstitialhydrocarbonsanddissolvedhydrocarbonsfromtheresin.Nitrogen,conveyinggas,andhydrocarbonsevolvedfromresin,exitthetopofthebinthroughthePPBFilterandontotheVentRecoverySystem.从尾气回收来的回收轻组分气体(或者补充氮气)被注入到产品脱气仓的顶部内锥体,吹扫树脂间隙中的碳氢化合物或者溶解的碳氢化合物。氮气,输送气和从树脂中释放出来的碳氢化合物经过产品脱气仓过滤器离开仓的顶部进入尾气回收系统。NitrogenandsteamaremixedandenterthebottominternalconeofthePPB.Thenitrogenisheated(byasteamjacket)beforebeingmixedwiththesteamtoavoidsteamcondensation.Thesteamrisesthroughthelowersection,hydrolyzingtheresidualaluminumalkylsandanyremainingactivecatalystgranules.Theresidualsteam,nitrogenandsomeevolvedhydrocarbonsareremovedasasidestreamfromunderthebottommiddle(collection)cone.氮气和蒸汽混合并进入产品脱气仓的底部内锥体。加热后的氮气(由蒸汽夹套)再与蒸汽混合防止蒸汽冷凝。蒸汽上升经过底下部分,

25H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度水解残余的三乙基铝和其它残留的活性催化剂颗粒。余留的蒸汽,氮气和一些释放出来的碳氢化合物从下中部(收集)锥体下面作为一股边料排出。AnitrogenstreamisalsosenttotheuppermiddleinternalconeofthePPB.ThisconeactsasabarrierbetweenthebottomandtopsectionsofthePPB.Enoughnitrogenisusedtoensurethatsomenitrogenisbeingcarriedupthroughthebed(withtherecycledlights,conveyinggasandhydrocarbons)anddownthroughthebedtoberemovedwithsteamandothernitrogenoutthroughthecollectioncone.ThisbarrierconewillhelpensurenosteamescapesthroughthebinandintotheVentRecoverySystemandthatminimalmonomerwillbecarriedfromthetopofthebinandlostthroughthecollectioncone.在产品脱气仓上中部内部锥体还进来一股氮气。这部分锥体作为产品脱气仓的底部和顶部的一个缓冲。这里用了足够的氮气以确保有部分氮气能往上经过床层(和回收轻组分,输送气和碳氢化合物),往下经过床层并在收集锥体段和蒸汽和其它氮气一起排出。这个缓冲锥段将帮助确保没有蒸汽逃逸经过仓体进入尾气回收系统,而且把保证只有最少量的单体能过被带到仓体上部,已经在收集锥体段被损失掉。ThecollectionconesidestreamisventedtotheflareafterpassingthroughtheLowProductPurgeBinFilter

26H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度(Y-5019).Thesidesteamflowrateiscontrolledtobegreaterthantheenteringsteam/nitrogenmixture.Thiscontrolensuresthataknownamountofnitrogenisforceddownwardfromthe‘barrier’conetopreventsteamfromenteringtheVentRecoverySystem.收集锥体段的侧面那股流体将在经过产品脱气仓底部过滤器(Y-5019)后送到火炬。这股流体的流量被控制在大于进入的蒸汽/氮气混合的流量,确保有一定已知量的单体在缓冲锥段被强制向下防止蒸汽进入尾气回收系统。ResinfromthePPBpassesthroughtheProductPurgeBinRotaryFeeder(S-5015)andflowsbygravityintotheAdditiveAdditionandPelletingSystems.PPBleveliscontrolledbythespeedofthePPBRotaryFeeder.树脂从脱气仓出来后,进入产品脱气仓的旋转进料器(S-5015)。树脂在重力作用下进入添加剂添加系统和造粒系统。产品脱气仓的料位由产品脱气仓旋转进料阀的转速控制。ResinisrecirculatedintheProductPurgeBinforhighFcproductsusingtheProductPurgeBinResinConveyor(S-6263).高Fc产品的树脂会经过产品吹扫罐输送器(S-6263)送回产品吹扫罐。E.VentRecovery(Part5B)尾气回收(第5B部分)

27H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度TheVentRecoverySystemisdesignedtorecovermonomers,propyleneandethylene,fromstreamsthatareventedfromtheResinDegassingSystem.TheProductPurgeBin(PPB)ventsandtheTransferTank(C-4311and4321)areseparatedintothreemainstreams.Thefirst,nitrogenandethanerichstream,isrejectedtopreventaccumulationintheReactionSystem.Thesecond,amonomer-richstreamarerecycledbacktothereactionarea.Thethird,propane,isalsorejectedtopreventpropaneaccumulation.尾气回收系统用于回收树脂脱气系统尾气中的单体丙烯和乙烯。产品脱气罐和产品转移罐(C-4311,C-4321)的尾气被分为三股主要的气流。第一股富含氮和乙烷的气体被排出,以防止其在反应系统内的累积。第二股富含单体的气流被送回至反应区。第三股丙烷也被排出,以防止丙烷的累积。Compression:Compressionfacilitiesarenecessarytoconvertlow-pressureventstreamsintohigh-pressurestreamsthatwillallowpropylene/propanetobecondensed.ThefacilitiesalsoprovidearecyclingrefrigerantstreamtotheAutorefrigerationSystem.TheVentRecoveryCompressor(K5214)isanelectricallydriven,three-stage,vertical,reciprocatingmachine.TheCompressorSuction

28H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度GuardFilter(Y5243)protectstheVentRecoveryCompressorbytrappingfinesuponfailureoftheupstreamprimaryfilters.TheVentRecoveryCooler(E5224)isprovidedtocoolProductDischargeSystem(PDS)ventspriortocompression.压缩:为了将低压尾气转化为高压气流,以便丙烯/丙烷的冷凝,有必要使用压缩装置。这套压缩装置能够同时提供用于自动冷冻系统的循环冷冻液。尾气回收压缩机(K-5214)是一台电动三段式垂直往复式压缩机。当上游主要过滤器出现故障时,压缩机入口保护过滤器(Y-5243)能够被用来阻止颗粒经过。当反应系统进行产品卸料时,尾气回收缓冲罐(C-5236)能够减缓产品接收器内的压力波动。在产品卸料系统尾气进入压缩机之前,使用产品接收器尾气冷却器(E-5224)将其冷却。TheCompressor'sfirst-stageflowismadeupofthePPBventsandtheTransferTankFiltervents.ThesecondstagefeediscomprisedoffirststagedischargeandrecycledrefrigerantflowfromtheRefrigerationInterchanger(E-5231).ThesecondstagedischargeisroutedtotheLightsRecycleSurgeTank(C-5229).StreamsleavingtheLightsRecycleSurgeTankareroutedtotheProductBlowTanks(PBT’s)intheReactionProductDischargeSystemstoserveasgranularresinconveyingassistgasforbothHomopolymer

29H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度/RandomcopolymerproductioninC-4001andImpactCoplymerproductioninC-4301.LightsRecyclenotrequiredforconveyingassistgasisrecycledbacktothesuctionofthethirdstageoftheVentRecoveryCompressor.ConveySystemAssistGas.DuringHomopolymer/RandomCoplymerproduction,thethirdstagefeedalsoincludesventsfromtheDegassingPot(C5257)andtheRecoveryColumn(C5260).DuringImpactCopolymeroperation,theseventsareroutedtoReactionSystemC-4301.Thethird-stagedischargepressureiscontrolledat4.14MPag.Thecompressorcapacityiscontrolledusingunloadersandathird-stagedischargepop-over(recycle)valve.TheCompressorloadsonhighsuctionpressuresandunloadsonlowsuctionpressures.压缩机第一段的气流为产品脱气罐和转移罐过滤器尾气所组成。压缩机第一段的排料与来自冷冻换热器(E－5231)的循环冷凝液组成压缩机第二段的进料。第二段的排料被送到轻组分回收缓冲罐(C-5229).离开轻组分回收缓冲罐的物流被送到反应部分的产品下料系统中的产品吹出罐(PBT),作为粉料树脂的输送辅助气用于反应器1的均聚/无轨共聚物的生产,和反应器2的抗冲共聚物的生产。没有被要求作为输送辅助气的回收轻组分被送回到尾气回收压缩机第三段的入口。在生产均聚/无轨共聚物的时候,

30H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度第三段的进料同时也包括从脱气罐(C-5257)和回收塔(C-5260)来的尾气。在生产抗冲共聚物的时候,这些尾气被送回C-4301反应系统。第三段的出口压力控制在4.14MPa(表压)。压缩机的总能力由卸载器和第三段出口的安全阀来控制。压缩机在高吸入压下加载,在低吸入压下卸载。Autorefrigeration:TheAutorefrigerationSystemrecoverspropyleneandethylenewhilerejectinganitrogen-richstream.ThesystembeginswiththeCompressorAftercooler/Condenser(E5230)whichcondensespropyleneandpropanefromthecompressordischargeusingcoolingwater.TheliquidcanbesplitbetweentheReactionSystemC-4001andtheDistillationSystemduringHomopolymer/Randomproduction.AlloftheliquidisroutedtotheDistillationSystemduringImpactCopolymerproduction.自动冷冻系统:自动冷冻系统在排出富含氮气的气流的同时回收其中的丙烯和乙烯。系统前端的压缩机后冷器/冷凝器(E-5230)用冷却水冷凝压缩机排放中所含的丙烯和丙烷。在生产均聚/无轨共聚物时,冷凝液一部分回到反应系统C-4001,一部分进入分馏系统。在生产抗冲共聚物的时候,全部的冷凝液都被送到分馏系统。ThevaporfromthecondenserispartiallycondensedintheRefrigerationInterchanger(E5231).ThephasesareseparatedintheVentRecoverySeparator(C5204).Liquid

31H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度fromtheseparatorissplitintorefrigerantandrecoveredpropylene.TherefrigerantispartiallyflashedandthenintroducedintotheInterchanger.TherefrigerantexitstheInterchangercompletelyvaporizedandflowstothesecondstagesuctionoftheVentRecoveryCompressor(K-5214).TherecoveredliquidpropyleneisheatedintheInterchangerandcanbesenttotheDistillationSystem(Homopolymer/RandomCopolymerproduction)orReactionSystemC-4301(ImpactCopolymerproduction)..ThevaporleavingtheseparatorisalsoheatedintheInterchangerandsenttotheProductPurgeBin(C-5009)assweepgas.从冷凝器出来的蒸汽经由冷冻换热器(E-5231)部分冷凝。各相在尾气回收分离器(C-5204)中被分离。从分离器中分离出的液体被进一步分为冷冻剂和回收的丙烯。冷冻剂被部分闪蒸后送入换热器。从换热器出来的冷冻剂已经完全蒸发汽化,并接着进入尾气回收压缩机(K-5214)的第二段吸入。回收来的液体丙烯在换热器中被加热,接着被送入分馏系统(均聚/无轨共聚物生产),或者C-4301反应系统(抗冲共聚物生产)。从分离器中出来的蒸汽也在换热器中被加热,再送到产品脱气仓(C-5009)作为吹扫气。LightsRecycleSystem:TheLightsRecycleSurgeTank(C5229)providessurgeforintermittentconveyinggasrequirementsforReactionSystemC-4001PDS.

32H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度轻组分回收系统:轻组分回收缓冲罐(C-5229)为反应系统C-4001的PDS提供了间歇输送气的缓冲。Whenpossible,lightsrecyclefromtheRefrigerationInterchanger(E-5231)shouldbeusedforReactionSystemC-4301inertscontrol.LightrecyclefromtheRefrigerationInterchangerisalwaysusedforProductPurgeBinsweepgas.Lightgasesthatarenotusedarerejectedtotheflare.如果可能,从冷冻换热器(E-5231)回收的轻组分会作为C-4301反应系统的惰性控制。从冷冻换热器回收的轻组分总是被作为产品脱气仓的吹扫气。不被利用的轻组分气体会被排到火炬。Distillation:TheDistillationSystemisusedtoseparatepropanefrompropyleneinordertoprovideaconcentratedpropanestreamforreturntoOSBLfacilities.Theseparationoccursintwosteps.ThefirststepisthedepressurizationoftherecoveredliquidsintheDegassingPot(C5257).Thisstepremoveslightsfromtheliquidsteamandreducestheloadonthesecondstep,distillationintheVentRecoveryColumn(C5260).TheDegassingPotfeedoriginatesfromtheCompressorAftercooler/Condenser(E5230)andtheRefrigerationInterchanger(E5231).

33H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度分馏系统:分馏系统将丙烷与丙烯分离,以得到浓缩的丙烷送至界区外。分离分两步进行。第一步是脱气罐(C-5257)中回收液体的减压。这一步将液体中的轻组分分离出来,这样能够减小第二步(尾气回收塔(C-5260)中的分馏)的荷载。脱气罐进料来自压缩机后冷器/冷凝器(E-5230)和冷冻换热器(E-5231)ThevaporleavingtheRecoveryColumnDegassingPotiscombinedwiththerecoverycolumnvent.ThemixtureisthenrecycledtotheVentRecoveryCompressor(Homopolymer/RandomCopolymerproduction),orReactionSystemC-4301(ImpactCopolymerproduction).LiquidfromtheRecoveryColumnDegassingPotisfedtothecolumn.从回收塔脱气罐出来的气体与回收塔尾气合并在一起,一并被送回尾气回收压缩机(均聚/无轨共聚物的生产),或者C-4301反应系统(抗冲共聚物的生产)。回收塔脱气罐中的液体被送回塔内。TheRecoveryColumn(C5260)usesastab-inRecoveryColumnReboiler(E5268)andanintegralpartialRecoveryColumnCondenser(E5261).CoolingwaterforthecondenserispumpedwiththeRecoveryColumnBoostPump(G5259).Thecolumnoperatesatapproximately2.17MPagandcanbeconfiguredintwooperationmodes.DuringHomopolymer/RandomCopolymerproduction,thefeedentersseveraltrays

34H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度downfromthetoptrayandtheliquidrecyclestreamleavesfromtheRecoveryColumnCondenser.DuringImpactCopolymerproduction,thefeedentersatthetoptraywhileliquidrecycleistakenfromseveraltraysbelowthefeedtraytoallowethyleneremovalforrecycletoReactionSystemC-4001.TherecyclestreamisreturnedtoReactionSystemC-4001viatheRecoveredPropylenePump(G5269).TheWaterInjectionPump(G5275)injectswaterintothecolumnbottomsstream,toneutralizeanytraceamountsofco-catalysts.回收塔(C-5260)中装有一个插入式再沸器(E-5268)和一个内在的部分冷凝器(E-5261)。冷凝器中的冷却水由回收塔增压泵(G-5259)泵入。回收塔操作压力为2.17MPa(表压)并有两种操作模式。生产均聚物/无规共聚物时,进料从顶部的塔盘接连进到几个塔盘之下,而循环液体则从冷凝器的部位排出。生产抗冲共聚物时,进料从顶部塔盘进来,再在几个塔盘之下的位置取出循环液体,回收其中的乙烯,送回1号反应器。循环物流经过回收丙烯泵(G-5269)送回1号反应器。回收塔底的丙烷物流在流过水冷的回收塔冷却器被冷却。进水泵(G-5275)将水射入塔底的物流,用以中和其中可能存在的少量催化剂。F.ResinAdditiveHandling(Part6)树脂添加剂的处理(第6部分)

35H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度ResinAdditiveHandlingbeginsattheoutletoftheProductPurgeBinRotaryValve(S5015)andendsattheinletoftheMixer(Y7001).Itincludesthehandlingandfeedingofgranularresinandliquidandsolidadditives.树脂添加剂的处理从产品脱气仓的旋转阀(S-5015)出口开始,到混合器(Y-7001)的入口为止。这部分包括树脂粉料、液态及固态添加剂的处理和进料。GranularResinSystem树脂粉料系统:ResinfromtheProductPurgeBinRotaryFeeder(S-5015)dropsbygravitytotheResin/AdditiveConveyor(S6220).Thegranularresinmass-flowrateiscalculatedintheDCSbasedonrotaryvalvespeed,valvefillefficiency,andproductdensity.ThiscalculatedvalueisthemastercontrollerfortheSolidAdditiveFeeders(S-6241,S-6242,S-6243,S6245,andS-6254)andtheLiquidAdditivePump(G6214).ResinflowsfromtheResin/AdditiveConveyortotheExtruderFeedHopper/VentFilter(Y-6211).SolidmaterialintheExtruderFeedHopperflowsbygravitytotheMixer(Y-7001).树脂从产品脱气仓的旋转进料阀(S-5015)出来,在重力作用下进入树脂/添加剂传送器(S-6620)。树脂粉料的质量流速度可在DCS中根据脱气仓旋转阀速度、

36H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度阀门填充效率和产品密度计算。该数值被作为固体添加剂进料器(S-6241,S-6242,S-6263,S-6245,S－6254)和液体添加剂泵(G－6214)的主要控制变量。树脂从树脂/添加剂传送器进入挤出机进料料斗/尾气过滤器(Y-6211)。该料斗中的固体物料在重力作用下进入混合器(Y-7001)。AdditiveAdditionSolidadditivesarereceivedinbags,drums,andbulkbags.Thesecontainersaremovedaroundusingeitheraforklift(S-6225)orapalletjack(S-6226)andaretransferredtotheadditivelevelusingtheAdditiveLift(S6219).AdditivesdeliveredinbagsarethendepositedintotheBagDumpStation/DumpHoppers(Y6231throughY6233).AdditivesdeliveredindrumsaredepositedintheBagDumpStation/DumpHopper(Y6231throughY6233)throughanadapterconnectionfortheportableDrumDumper(S-6264)spout.Additivesdeliveredinbulkbagsaredepositedinthebulkbagdischargers(S-6253andS-6272).Theadditivesflowbygravityfromthedumpstations/dischargersintotheAdditiveSurgeBins(D-6236throughD-6238,D-6250andD-6270).Purgenitrogenflowsintothesurgebinstodisplaceoxygenwhichisdetrimentaltoproductquality.ThepurgenitrogenexitsthroughthefiltersonthedumphoppersorthroughAdditiveSurgeBin

37H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度Filters(Y-6251andY-6271)onthebulkbagadditivesurgebins.ThesolidadditivesthatarestoredintheSolidAdditiveSurgeBinsflowbygravitytotheSolidAdditiveFeeders(S-6241,S-6242,S-6243,S-4245,andS-6254)wheretheyaremeteredbyratiocontrolbasedontheRotaryFeeder’s(Valve’s)massflowrate.Fromthefeeders,theadditivesflowbygravitytotheResin/AdditiveConveyor(S6220)wheretheyarecombinedwiththemaingranularresinstreambeforeenteringtheMixerFeedHopper(D-6211).添加剂的加入:固体添加剂是用袋子、桶和大型包装袋包装的。需移动时,使用叉车(S-6225)或码垛机(S-6226);需将它们运至添加剂该有的高度时,先使用添加剂升降机(S－6219),然后,包装在袋子中的添加剂被倒入倒袋站/倾倒斗(Y－6231-Y-6233)。以桶包装的添加剂经过使用一个连接器与可移动式倒桶器(S-6264)相连,以倾入倒袋站/倾倒斗(Y－6231-Y-6233)中。以大型包装袋包装的添加剂倒入大型包装出料器(S-6272和S-6253)中。添加剂在重力作用下从卸料站/出料器进入添加剂缓冲罐(D6236-D-6238,D-6270,和D-6250)。将氮气充入缓冲罐,置换出氧气,以免影响产品质量。吹扫用过的氮气经过卸料斗上的过滤器或添加剂缓冲罐(用于大型包装袋的形式)上的过滤器(Y-6271和Y-6251

38H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度)离开系统。贮存在添加剂缓冲罐中的固体添加剂在重力作用下进入固体添加剂进料器(S-6241,S-6242,S-4243,S-6245,S－6254),其流量能够以旋转进料器(阀门)的质量流量为基础,经过比例控制来计量。接着,添加剂在重力作用下从进料器进入树脂/添加剂传送器(S－6220),在那里与主要的那一股树脂粉料合并在一起,进入混合器的进料斗(Y-6211)LiquidAdditiveAddition液体添加剂:LiquidadditiveispumpedfromshippingcontainersintotheLiquidAdditiveTank(C-6213)usingtheLiquidAdditiveDrumUnloadingPump(G-6215).TheadditiveispumpedfromthetanktotheMixerFeedHopper(D-6211)usingtheLiquidAdditivePump(G6214).TheflowrateofliquidadditiveismeteredbyratiocontrolbasedontheProductPurgeBinRotaryFeeder’s(S-5015)massflowrate.液体添加剂由液体添加剂卸料泵(G-6215)将添加剂从桶中泵入到液体添加剂罐(C-6213)。然后用液体添加剂泵(G－6214)将添加剂泵入混合器进料斗(D-6211)。其流量能够以旋转进料器(S-5015)的质量流率为基础,经过比率控制来计量。ResinRecirculationandSeedBedCollection树脂循环和种子床收集TheProductPurgeBinResinConveyor(S-6263)isusedtocirculatehighFcproductswhenthepelletinglineisnotoperating.TheProductPurgeBinResinConveyorisalso

39H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度usedtochargereactorseedbedresinbyplacingtheGranularResinDiverterValve(Y6201)inthedivertposition.当造粒线没有运行的时候,产品脱气仓树脂输送器(S-6263)被用来循环高Fc的产品。产品脱气仓树脂输送器在将粉料树脂转换阀(Y-6201)处于转换位置时,还被用于将种子床树脂装入反应器。G.Pelleting(Part7)造粒(第7部分)Themainflowofgranularresin,solidadditives,andliquidadditivefromtheResinAdditiveHandlingsystemarefedthroughtheMixerFeedHopper(D6211)toMixer(Y7001).ThecombinedflowsaremixedandfluxedintheMixerandthenthemoltenpolymerisdischargedtotheMeltPump(Y-7004).Gases--nitrogenanddevolatilizedhydrocarbonsareventedtotheflarefromtheVentHousing(Y-7014).MoltenresinthenpassesthroughDiverterValve(Y7002)intotheMeltScreenUnit(Y7005).ContinuousMeltRheometer(Y7003)monitorsthemeltflowofthepolymerexitingtheMeltScreenUnit.ThemeltthenenterstheUnderwaterPelletizer(Y7007)throughalow-pressuredropDiePlate(Y7006)whererotatingknifebladescutthemeltintopellets.Thepellet-waterslurryispumpedintoanAgglomerateRemover(Y7009)andPelletDryer(Y7010).The

40H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度waterreturnstothepelletwatersystemconsistingofaPelletingWaterTank(D7008),aPelletingWaterPump(G7012),andaPelletingWaterCooler(E7020).DrypelletsaredischargedtoaPelletScreener(Y7013)whereoversizepelletsareremoved.Theproductpelletsgravity-flowintoresinhandlingfacilities.主要的树脂粉料、母料以及从树脂添加剂运输系统来的液体添加剂都经过混合器进料料斗(D-6211)进入混合器(Y-7001)。这些物料在混合器内被混合和熔化后,熔融的聚合物进入熔融泵(Y-7004)。氮气和其它脱挥而来的碳氢化合物从尾气室(Y-7014)排到火炬。熔融态的树脂经过换向阀(Y-7002)进入熔融滤网(Y-7005)。在线熔体流变仪(Y-7003)监视经过换网器的聚合物的熔融指数。熔融态聚合物接着经过低压降模板(Y-7006)进入水下造粒机(Y-7007),转动的刀片将熔融物切为颗粒。颗粒和水的混合物被泵入团块分离器(Y-7009)和颗粒烘干器(Y-7010)。其中的水返回由造粒水罐(D-7008)、造粒水泵(G-7012)以及造粒水冷却器(E-7020)组成的造粒水系统。干燥的产品颗粒进入颗粒筛选器(Y-7013),将尺寸偏大的颗粒筛除。产品颗粒在重力作用下落入树脂处理装置。TheAuxiliaryFacilitiestotheUNIPOLPPplantaredescribedinthefollowingsections:ThesefacilitiesaretobedesignedbyLicenseewiththeexceptionofResin

41H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度HandlingandBlending.ThisallowsLicenseetotakeadvantageofsynergieswiththePEunit.LicensorwillprovidesupportingUNIPOLPPprocessinformationforthesefacilities.TheResinHandlingandBlendingwillbeincludedinLicensor’sPDP.UNIPOL聚丙烯工厂的辅助设施在下面部分进行描述:这些设施将由专利受让方进行设计(除了树脂处理和掺混)。这使专利受让方能够享受和聚乙烯装置同步的好处。专利转让方将提供这些设施的UNIPOL聚丙烯工艺信息进行支持。树脂处理和掺混将包含在转让方的工艺包中。3AuxiliaryProcessFacilities辅助工艺设施ThefollowingAuxiliaryProcessFacilitiessupporttheUNIPOLPPProcessunitdescribedabove.　上述UNIPOLTM聚丙烯工厂的辅助工艺设施如下。ResinHandlingandBlending(tobeincludedinContractPlantscopeinPDP)树脂掺混和处理(将包括在工艺包的合同工厂范围内)ControlSystem(DCSandSCS)控制系统(DCS和SCS)UtilityDistributionSystems公用工程系统Power电Steam(LP,MP)　蒸汽(低压,中压)CondensateCollectionSystem　冷凝液收集系统

42H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度CoolingWater　冷却水DemineralizedWater　脱盐水PotableWater　饮用水FreshWater　新鲜水Nitrogen　氮气InstrumentAir仪表风PlantAir　工厂风ProcessVent(Flare)HeaderSystem工艺尾气(火炬)总管系统WasteWaterTreatment废水处理TracingSystem设备管道加热保温系统FirefightingSystem消防系统HCDetectionandSafetyAlarmSystem　可燃物探测和安全警报系统H.ResinHandlingandBlending(Part8)　　树脂掺混和处理(第8部分)TheresinhandlingsystembeginsattheoutletofthepelletdryerinPart7ofthePPProcessUnitandendsatthefeedtothebaggingsystem.Thefollowingisageneraldescriptionoftheresinhandlingsystem.树脂处理系统从位于聚丙烯工艺单元第7部分的树脂干燥器出口开始,到包装系统的入口结束。下面给出有关树脂处理系统的一般的描述。

43H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度FinishedpelletsfromthePelletDryer(Y-7010)flowbygravityintothePelletScreener,whichremovesanyover-sizedpellets.ThePelletScreenerdischargesintothePelletReceivingHopper(Y-8001).ThepelletrotaryfeederfeedsthepelletsfromthePelletReceivingHopper(Y-8001)toadilutephaseconveyingsystem.ThisconveyingsystemconsistsofaProductTransferBlower(K-8003andK-8004),whichconveysthepelletstooneoftheblendingbins.DuetotheexceptionalconsistencyofresinexitingtheUNIPOLPPprocess,verylittleadditionalblendingisrequired.AllProductBlendingBins(D-8007throughD-8011)aresingle-passgravityflowblendersandmaycontainaim-grade,non-aim-graderesinoroff-spec.ThebinsarepurgedwithairfromthePurgeAirBlower(K-8050andK-8051)topreventanyresidualvolatilehydrocarbonsfromaccumulatingtoexplosiveconcentrationsinthesilos.WhenproducingcrackedproductsthesiloventswillbedilutedwithsufficientairfromoneoftheconveyingblowerstostaywithinthelocalChineseemissioncriteria.成品颗粒从烘干机(Y-7010)出来后,在重力作用下进入装载筛选器以剔除所有尺寸过大的颗粒。筛选器出来的颗粒进入颗粒接收料斗(Y-8001)。旋转进料器将颗粒从颗粒接收料斗(Y-8001

44H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度)送入一个稀相传送系统。这套系统包含专用的颗粒产品输送鼓风机(K-8003K-8004),它将产品颗粒运往其中一个掺混仓。由于UNIPOLTM聚丙烯产品颗粒优异的均一性,几乎不需要额外的掺混。所有的掺混仓(D-8007–D-8011)都是单程重力流掺混器,其中可能含有目标牌号,接近目标牌号或等外的产品。由鼓风机(K-8050,K-8051)来的压缩空气通入各掺混仓,使任何残留的挥发性碳氢化合物不至于累积到可能引发爆炸的浓度。当生产经过裂解的聚丙烯产品时,掺混仓的出口气体由来自其中一台鼓风机的空气进行稀释,以达到当地中国的排放标准。Theresinhandlingsystemisdesignedtohandlethreequalitygradesofresin.树脂处理系统是设计用来处理三种不同质量的树脂的Aim-gradepellets目标牌号产品颗粒Near-aim-gradepellets接近目标牌号产品颗粒Off-specificationpellets等外品颗粒AimGradeResinHandling:Resinwithpropertieswithinthequalitycontrolrangeisclassifiedasaimgradeandisconveyedtoabindesignatedtoreceiveaimgradeviathediverters.目标牌号树脂的处理:凡是性质指标落在质量控制范围内的树脂就被定义为目标牌号树脂,而且会经过一个分流器被送往专门用来储存目标牌号树脂的产品料仓。

45H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度Near-AimGradeResinHandling:Resinwithpropertiesslightlyoutsidethequalitycontrolrangeisclassifiedasnear-aimgrade(alsocallednon-aim)andisconveyedtoabindesignatedtoreceivenear-aim-gradeproductviathediverters.Forupgradingnear-aim-gradeproducttoaim-gradeproduct,thenear-aim-gradeproductcanbeconveyedtotheaim-gradeblendbinsusingnear-aim-graderotaryfeedersanddiverters.Thesetwomaterialsareblendedinthebins.接近目标牌号树脂的处理:凡是性质指标落在质量控制范围之外不远的树脂被定义为接近目标牌号树脂(也称为非目标牌号树脂),而且会经过一个分流器被送往专门用来储存非目标牌号树脂的产品料仓。为了将非目标牌号树脂升级为目标牌号树脂,能够经过非目标牌号旋转进料器和分流器将非目标牌号产品送入目标牌号掺混仓。两种物料在仓内混合。Off-specificationResinHandling:Pelletedresinclassifiedasoff-specificationisdivertedtoadesignatedbintoreceiveoff-specificationproduct.Theoff-specificationproductisnotfurtherblendedasitisnotsuitableforupgradingtoaim-ornon-aim-gradeproducts

46H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度等外品的处理:被分类为等外品的树脂经过一个分流器被送往一个专门用来储存等外品的料仓。等外品不与其它产品作任何掺混,因为它不能被升级到目标产品或接近目标产品。PelletBlendingTransferSystem颗粒掺混传送系统TheBlendingBinRotaryFeeders(S-8015throughS-8019)controlthedischargefromtheblendingbins,flowingbygravitytothePelletBlendingTransferBlowers(K-8040,K-8041,andK-8042).Thepelletblendingtransfersystemtransfersthepelletstothebaggingsystemviaanelutriationsystem.Streamersandfinescanbeproduced.TheseundesirablematerialsareremovedfromthepelletedproductbyanelutriationsystemconsistingofanElutriator(Y-8023),anElutriatorWashFan(K-8030),andanElutriatorDustCollector(Y-8027).TheElutriatorisinstalleddirectlyabovethebaggingarea.ThecleanpelletedmaterialisgravityfedtotheBaggingBins(D-8024andD-8025)viatheElutriatorRotaryFeeder(Y-8081),equipmentbeyondthebaggingbinsaredesignedbyLicensee.旋转进料器(S-8015throughS-8019)控制掺混仓的出料。出料在重力作用下进入颗粒掺混传送鼓风机(K-8040,K-8041,andK-8042)。颗粒掺混传送系统经过一个淘选系统将颗粒送至包装系统。我们用这个淘选系统来去掉我们不想要的物质,

47H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度即生产过程中可能会出现的条状聚合物和粉尘。这套系统包括一个淘选器(Y-8023),一个淘选器清洗扇(K-8030),以及一个淘选器粉尘收集器(Y-8027)。淘选器位于包装仓的正上方。干净的产品颗粒能够靠重力,经过淘选器出口的旋转进料器(Y-8081)进入这些包装仓(D-8024andD-8025)内。包装仓以下的系统由专利受让方设计。PurgeAirSystemforProductBlendingBins产品掺混仓的脱气系统ApositivedisplacementBaggingBinPurgeBlower(K-8028andK-8029)isfurnishedtoprovideairtoallbinstoassurethatanyresidualhydrocarbonsdonotaccumulate.使用一台正排量鼓风机将空气吹入各个掺混仓,以确保不会有残余的碳氢化合物累积。WashWaterSystem清洗水系统AWashWaterTank(C-8090)andaWashWaterPump(G-8091)makeupthewashwatersystemtosupplywashwatertoallbins.Thewashwatersystemshouldbedesignedtocleanthebinsand(whereapplicable)theindividualblendtubeswithinthebins.Hotairfordryingthebinscanbeprovidedbythepurgeairsystemwiththecoolingwatersupplyofthepurgeairblowerdischargeaircoolershutoff.

48H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度该系统包含一个清洗水罐(C-8090)和一台清洗水泵(G-8091)的清洗水系统为各个仓提供清洗水。该系统是用来清洗各仓以及(如果适用的话)仓内的每个掺混管。用来烘干料仓的热空气可由空气脱气系统提供,但须先将空气鼓风机出口处的空气冷却器的冷却水源切断。ControlSystem控制系统AprocesscontrolsystemisutilizedtomonitorandcontroltheUNIPOLPPprocess.Mostofthecontrolsystemisconventionalclosed-loopcontrolofvariablessuchasflow,temperature,andpressure.Someportionsofthecontrolsystemincorporateautomaticsequencing,suchasfortheremovalofproductfromthereactor.用一工艺控制系统来监视、控制UNIPOL™聚丙烯工艺。控制系统的大部分属于传统的对诸如流量,温度,压力的闭环控制。有些控制使用自动排序,例如将产品从反应器中转移走的过程。Morespecializedcontrolsystemsincludeprocessanalyzersandnucleardetectors.On-lineprocessanalyzers,utilizinggaschromatographsandotherdetectorsystems,givecontinuousanalysesforthemonitoredstreams.Theseanalysesareusedtoassureproperpurityofrawmaterials,forclosed-loopcontrolofthereactioncyclegascomposition,andtoinsuresafeoperatingconditions.

49H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度更特殊一些的控制系统包含工艺分析仪和放射性监测器。使用气相色谱仪的在线工艺分析仪和其它检测系统不断地对需要监视的物流进行分析。这些分析仪将保证原料的纯度、反应循环气组成的闭环控制、以及安全的操作条件。Nuclearinstrumentationisusedwhereotherconventionalmeasurementsystemshavebeenunsatisfactory,typicallyforsolidslevelmeasurements.Thesedevicesarecomposedofanuclearsourceanddetectors.放射性仪表用在传统测量系统无法满足要求的地方,一般是用在固体料位的测量上。这些装置包括放射源和探测器。Amicroprocessor-basedDistributedControlSystem(DCS)isnormallyusedtoprovidetheoperatorinterfacewiththecontrolsystems.Theoperator'sstationhasvideodisplaysandkeyboardsforaccesstoalltheprocessdataonthedatahighwayfromthefield-mountedcomponents.Sequencecontrolandshutdowninterlocksareprovidedusingprogrammablelogiccontrollers(PLC’s).Inthecaseofsafetyinterlocks,dedicatedlogicsolversareprovidedforemergencyshutdownfeatures.Processgraphics,trendrecorders,alarmprinters,loggers,andannunciatorsareothernormalelementsofthesystem.

50H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度一般会有一个基于微处理器的分布式控制系统(DCS)来为操作人员提供她与控制系统之间的界面。操作站设有图像显示,并由键盘,能够用来对从现场元件经过数据高速公路传来工艺数据进行操作。可编辑的逻辑控制器(PLCs)可为系统提供序列控制和停车连锁。至于安全连锁,有专门的逻辑解码器来提供紧急停车功能。其它象工艺图,趋势记录器,警报打印机,记录器,报讯器等也都是该系统的常见元素。AprocesscomputingsystemutilizingtheUNIPOLUNIPPAC™AdvancedProcessControlSystemgreatlyenhancestheoptimizationoftheUNIPOLPPunitbyperformingfunctionsthatarebeyondthecapabilitiesofthebasiccontrolsystemormanualcalculation.TheUNIPPACsystemisinterfacedtotheDCSforsupervisorycontrol,operatorguidance,anddatalogging.一套使用UNIPOLUNIPPAC™先进工艺控制软件的工艺计算系统,经过它的一些超出基础控制系统和人工计算能力范围之外的功能,将大大加强UNIPOL™聚丙烯单元的优化。工艺计算机与DCS就管理控制、操作员指南和数据记录等方面进行互动。AfewexamplesoffunctionsprovidedbyUNIPOLUNIPPAC™ProcessControlSysteminclude:UNIPOLUNIPPAC™先进工艺控制软件系统的功能的具体举例:ResinPropertyPrediction树脂性质预测

51H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度AimGrade/TransitionControl目标牌号/牌号切换控制ProductionRateCalculation产率计算DewPointTemperatureCalculation露点温度计算FlowCompensationCalculation流量补偿计算ProductionRateControl产率控制ProductionRateMaximization产率最大化SomeofthebenefitsoftheUNIPOLUNIPPACinclude:使用UNIPOLUNIPPAC™先进工艺控制的一些好处包括:Increasedproductionrate产率增加Increasedconsistencyofproductionrate产率稳定性增加Fewerreactorupsetsfromanalyzerproblems;lessreactordowntime由于分析仪的问题而引起的反应器故障减少了;反应器总的停车时间减少Bettercontrolathigherproductionrates　在高产率下达到更优良的控制Consistenttransitionswithinacatalystfamily在同一种催化剂内切换牌号时操作一致Increasedaim-gradeproduction目标牌号的产量增加Enhancedresinqualityandconsistency树脂质量和均一性得到加强

52H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度ThespecificAdvancedProcessControlfunctionsinUNIPOLUNIPPACaredefinedintheUNIPOLFunctionalSpecificationsprovidedundertheContractwithLicensee.UNIPOLUNIPPAC™先进工艺控制软件中的功能将与专利受让方签订的合同中提供的UNIPOLUNIPPAC™先进工艺控制功能规格书中。SeeAppendix7fordetailsofthecontrolsystem.详情见附件7中的控制系统。J.Utilities公用工程SteamandCondensate:ThePPProcessUnitrequiresMediumPressure(MP)andLowPressure(LP)steam.MPsteamisusedfortemporarilyheatingofcoolingwaterwheninitiallystartingupthereactor,andalsoforheatingtheextruder.LPsteamisusedmainlyforheatexchangers.MPandLPsteamareassumedtobesuperheatedatthebatterylimitsandaredesuperheatedusingcondensateinISBL.蒸汽和冷凝液:聚丙烯工艺单元要求使用中压(MP)和低压(LP)蒸汽。中压蒸汽用于在反应器启动时暂时加热循环水路,并用于加热挤出机。低压蒸汽主要用在换热器中。这里预计中压和低压蒸汽在合同工厂界区的边界处是过热的,且在界区内利用冷凝液来降低过热蒸汽的热量(即”除过热”)。ThecondensatefromthevariousconsumersiscollectedinacondensatecollectionpotandpumpedtotheContractPlant

53H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度batterylimits.Partofthecondensateisusedtodesuperheatthevarioussteamlevels.从各个”用户”处来的冷凝液都被收集在一个冷凝液收集罐内,再用泵打到合同工厂界区的边界。部分冷凝液被用来”除过热”不同等级的蒸汽。Other:Plantair,instrumentair,nitrogen,coolingwater,processwater,potablewaterandelectricalpowerwillbedeliveredtotheContractPlantbatterylimitsbytheLicensee.TheseutilitieswillthenbedistributedthroughouttheContractPlantfacilitiestothevariousprocessusers.MotorControlCenterandInstrumentairbackupsystemwillbeaddressedbytheEngineeringContractor.其它:工厂风、仪表风、氮气、冷却水、工艺用水,饮用水,电力等由专利受让方送至合同工厂界区的边界。然后,这些公用工程被分配给工厂内的各用户使用。马达控制中心和仪表风备风系统将由工程承包商设计。　K.ProcessVent(Flare)HeaderSystem　工艺尾气(火炬)总管系统HydrocarbondischargeswithintheContractPlantfrompressuresafetyvalves,occasionalroutinedepressurization

54H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度ofthereactor,emergencyreactorblowdown,andprocessventsarecollectedintheprocessventheader.在合同工厂中经过压力安全阀,反应器偶然的周期性卸压,反应器紧急排放和工艺尾气排放的碳氢化合物会收集在工艺尾气总管。　L.WasteWaterTreatment废水处理TheUNIPOLPPprocessdoesnotproducewastewater,however,oilymaterialfromaroundrotatingequipment,suchasleaksorspills,whenflushedwithwatercouldbeasourceofcontaminatedoilywater.Spilledresinshouldalsobecollectedandremovedfromsurfacewaterbeforebeingdischargedtothecleansewersystem.UNIPOLTM聚丙烯工艺本身不产生废水。但与旋转设备有关的含油物料如泄漏后与水混合就成为含油废水。泄漏的树脂颗粒也应收集并与地表水分离,以免进入”清洁”的(即无颗粒的)的下水道系统。WatercontainingresincomingfromtheContactPlantprocessareaswillbecollectedbymeansofvarioussewercollectingheadersandconveyedtoaresinrecoverypit.Resinandwaterisseparatedthroughanunderflowweir.Resinwillbeperiodicallycollectedandremovedmanuallyfromthewatersurfacebyusinganet.CleanwaterissenttotheContractPlantbatterylimits.

55H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度夹带着从工艺区带过来的树脂的水经过许多下水管道被收集起来,送至树脂回收池内。树脂和水经过一个底流坝分离开来。定期用人力将树脂从水表面用网收集起来并移走。干净的水被送到合同工厂的界区边界。Watercontaminatedwithoilwillbecollectedseparatelyintoanoilskimmingpitandtheoilwillbeperiodicallyremovedbyamanually-operatedoilskimmeranddischargedtotheContractPlantbatterylimits.被油污染了的水会被收集到另一个脱油池,再使用一个人工操作的撇油器定期将油收集起来,送至界区边界。RainwaterflowstoperimeterdrenchesaroundtheContractPlantandisdrainedoutsidethebatterylimits.雨水先流到合同工厂周围的地沟里,再流入界区外。M.TracingSystem设备管道加热保温TracingandinsulationdesignguidelinesareprovidedinthePDP.设备管道加热保温的设计准则见工艺设计包N.FireProtectionSystem消防系统Thefollowingfirefightingfacilitiesshouldbeconsideredforthisplant.DuringtheBasicandDetailedDesign,theEngineeringContractormustinvestigatethesetypeoffirefightingpossibilitiesandbasedthefirefighting

56H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度requirementsonthehazardspresentontheplot,thepossiblehazardsadjacenttotheplot,theLicensee’sspecifications&standardsandthelocalauthorityregulationsandstandards.下列消防设施是该工厂应予以考虑的。在设计阶段,设计商必须根据该工厂内外的具体潜在危险,专利受让方的具体标准和当地的消防法规来评估应用这些消防措施的可能性。Firewater(underground)distributionssystem,withafeedfrom2differentlocations.(flowfromtwosides)地下消防水分配系统,要求有两个水源。FireWaterDelugesystems大水量灭火系统FWhydrantsandFWmonitors,strategicallylocatedaroundandintheplot消防水龙头和消防水监视,合理地分布在厂区内。WetorDryrisersinbuildingsandhighstructures用于建筑物和高架机构的干湿消防升降装置Indoorautomaticsprinklersystems室内自动喷水系统Portable&wheeledfireextinguishers手提式和轮式灭火器FireProofingonloadbearingstructures,PiperacksandEquipmentsupports承重机构,管路和设备的防火FireandGasdetectionsystemsandvisible&audiblealarmingsystems火警和可燃气检测系统,及声光报警系统

57H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度Indoorsmokedetectionandgasextinguishingsystems室内烟气报警器和气体灭火器AfireprotectiondesignphilosophystatementwillbeprovidedinthePDP.工艺设计包PDP中还将提供防火设计的指导思路O.AlarmSystem警报系统TheGasDetectionSystem(GDS)providesgasdetectionfunctionalitybymonitoringforhazardoushydrocarbonconcentrationsinbuildingsoraroundprocessequipment.Insomeinstancesitmayalsomonitorforoxygendeficientenvironments.TheFireDetectionSystem(FDS)providesfiredetectionfunctionalitybymonitoringforbothsmokeandfire.TheGDSandFDSmayautomaticallydrivefiresuppressionequipmentsuchassprinklersystems.TheGDSandFDSwillinterfacewithunitpersonnelintheprocessareausinglocallyinstalledhorns,sirens,orbeaconsnearthedetectionsite.BuildingsnotinprocessareasmayhaveconventionalfirealarmsystemsbutshouldalsotransmitalarmsignalstotheFDS.SeeAppendix7.2.5.气体检测器(GDS)在建筑物和设备周围检测可燃碳氢化合物的浓度。在某些场合还可检测氧气的浓度是否不足。火警检测器(FDS

58H:\精品资料\建筑精品网原稿ok（删除公文）\建筑精品网5未上传百度)可检测烟和火焰。气体检测器和火警检测器还可自动启动灭火系统比如喷水装置。气体检测器和火警检测器经过在检测器附件安装的喇叭,汽笛和灯标警示厂内人员。不在工艺区域内的建筑物可采用普通的火警系统,但应将警报信号传送至火警检测器FDS。具体见附件7.2.5.