聚丙烯工藝描述

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H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度UNIPOL?PPProcessDescriptionUNIPOL?PP工藝過程描述1DescriptionoftheContractPlant合同工廠描述2UNIPOLPPProcessUnitUNIPOL聚丙烯工藝裝置3AuxiliaryProcessFacilities輔助工藝裝置UNIPOL?PPPROCESSDESCRIPTIONUNIPOL?PP工藝過程描述1DescriptionoftheContractPlant合同工廠描述TheContractPlantconsistsofapolypropyleneprocessunitdesignedtoproduce400KTAofpelletedpolypropylenefrompropylenebasedonUNIPOL?PPTechnologylicensedbyUnionCarbideChemicals&PlasticsTechnologyLLC,asubsidiaryofTheDowChemicalCompany.TheUNIPOLPPProcessisalow-pressuregas-phasefluidizedbedprocessforthemanufactureofPPresins.合同工廠包含一套基于UNIPOL?PP技術的生產(chǎn)40萬噸/年的聚丙烯工藝裝置,該技術轉讓自陶氏化學公司下屬的聯(lián)合碳化物(

1H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度聯(lián)碳)化學和塑料技術公司。UNIPOL?PP工藝技術是一項用于生產(chǎn)聚丙烯樹脂的低壓氣相流化床工藝。InadditiontotheUNIPOLPPProcess,resinhandlingandblendingfacilitiesarealsoincludedintheContractPlantbatterylimits.Otherauxiliaryfacilitiesincludeutilitydistribution,flareandplantinfrastructuresystems.ThePDPprovidesadequateinformationtoallowthesesystemstobeeasilydesignedbytheEngineeringContractor,resultinginsavingstotheLicensee.TheproductbaggingareaisoutsidetheContractPlantbatterylimitsandwillbedesignedbytheLicensee.在UNIPOL?PP工藝之外,樹脂處理和摻混也包括在本合同工廠范圍之內.其它輔助工藝設施包括公用工程分配,火炬,工廠基礎設施。工藝包提供了足夠的信息使工程承包商能很容易的設計這些系統(tǒng),從而使專利受讓方節(jié)省投資.產(chǎn)品包裝區(qū)域是在合同工廠之外,由該技術買方設計。2UNIPOLPPProcessUnitUNIPOL聚丙烯工藝裝置TheUNIPOLPPplantISBLiscomprisedofthefollowingprocessareas.UNIPOL聚丙烯工廠界區(qū)由下列工藝單元組成:A.RawMaterialSupplyandPurification原料供應和精制B.PropylenePurification　丙烯精制

2H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度C.Reaction聚合反應D.ResinDegassing樹脂脫氣E.VentRecovery尾氣回收F.ResinAdditiveHandling添加劑的加入G.Pelleting造粒Eachisdescribedindetailinthefollowingsections.Nocatalystpreparationisnecessary–SHAC?catalystisdeliveredtotheplantreadytouse.Nogas/solidseparationisneededduetotheuniquedesignofthereactorandproductdischargesystem.TheprocessunitslistedaboveareincludedintheLicensor’sProcessDesignPackage(PDP).每一單元都將在下面的章節(jié)詳細描述．催化劑制備是不需要的,因為賣方會將直接可用的SHAC?催化劑運到工廠。由于特殊的反應器和產(chǎn)品下料系統(tǒng)的設計,也無需單獨的氣固分離裝置．　以上所列的工藝裝置都包含在專利商的工藝設計包(PDP)中．A.RawMaterialSupplyandPurification(Part1)原料供應及精制(第1部分)Ethylene,nitrogen,andhydrogenaredeliveredtothebatterylimitsbypipeline.Co-catalyst,T2,isreceivedfromvendorshippingcontainerswiththeseshippingcontainersstoredintheISBLarea.

3H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度乙烯,氮氣和氫氣經(jīng)過管線送至界區(qū)邊界。助催化劑三乙基鋁則來自儲存在界區(qū)內的廠商運輸過來的儲罐。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.從界區(qū)外來的乙烯先經(jīng)過乙烯壓縮機(K-1003)壓縮至635psig,然后經(jīng)過乙烯預熱器(E-1006)加熱至100°C,再進入脫一氧化碳床(C-1008)。然后乙烯經(jīng)過乙烯后冷卻器(E-1010)冷卻至40°C,再經(jīng)過乙烯干燥器(C-1012)以除去水、各種極性成分和二氧化碳。最后,乙烯再經(jīng)乙烯過濾器(Y-1002),去掉顆粒雜質,而后才被送至反應系統(tǒng)。Nitrogenisreceivedfromtheboundarylimitsandtheflowissplitbetweendifferentendusers.NitrogennotrequiringpurificationispassedthroughaFilter(Y-1101)beforebeingsenttotheprocess.Purificationbed

4H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度regenerationnitrogenisfeddirectlytotheN2RegenerationHeater(E-2114)withoutpurificationorfiltration.NitrogenforbothPurifiedandHighPressurePurifiedendusesispassedthroughtheNitrogenDryer(C-1112)toremovewater.FromtheDryeroutlet,NitrogenpassesthroughtheNitrogenFilter(Y-1115)toremoveparticulatecontamination.AportionofthisfilterednitrogenisfedtoasmallboosterCompressor(K1102)whichisusedtoincreasethepressureofthenitrogentoitsnormaloperatingpressureofabout660psig(4,551kPag)forfeedtothePPreactionsystem.HighpressurenitrogenispassedthroughaFilter(Y1116)toremoveparticulatecontaminationpriortobeingfedtotheprocess.由界區(qū)外來的氮氣分流至不同的最終用戶。不需要精制的氮氣,只需在送至工藝區(qū)之前經(jīng)過過濾器(Y-1101)。精制床再生氮氣不需要經(jīng)過精制或過濾就可直接送到氮氣再生加熱器(E-2114)。需要精制的氮氣和高壓精制的氮氣會經(jīng)過氮氣干燥床(C-1112)去除水。從干燥床出來的氮氣經(jīng)過氮氣過濾器(Y-1115)去除顆粒雜質。這股過濾氮氣的一部分會進入一個小的壓縮機(K-1102),升高氮氣的壓力至進入聚丙烯反應系統(tǒng)的正常操作壓力660psig(4,551kPag)。高壓但其在進入工藝系統(tǒng)之前經(jīng)過一個過濾器(Y-1116)去除顆粒雜質。

5H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度HydrogenfromtheboundarylimitsispassedthroughtheMethanatorHeater(E-1204)whichincreasestheHydrogentemperaturetobetween100°Cand150°C.Atthattemperature,theHydrogenenterstheMethanator(C-1205)fortheremovalofcarbondioxideandcarbonmonoxide.ThecatalystcontainedintheMethanatorconvertstheCOandCO2toMethaneandWater.MethaneisaninertinUNIPOLReactor.TheHydrogenleavingtheMethanatoriscooledintheMethanatorAftercooler(E1206).FromtheAftercooler,HydrogenpassesthroughtheHydrogenDryer(C-1207)fortheremovalofboththewatercontainedintheincomingHydrogenandthatformedthroughtheMethanationreaction.ThehydrogenthenpassesthroughtheHydrogenFilter(Y-1211)toremoveparticulatecontaminantsbeforeitissenttothereactionsystem.來自界區(qū)的氫氣經(jīng)過甲烷化預熱器(E-1204)將氫氣溫度升至100°C至150°C之間。在此溫度下,氫氣進入甲烷轉化器(C-1205)去除二氧化碳和一氧化碳。在甲烷轉化起中的催化器將一氧化碳和二氧化碳轉化成甲烷和水。甲烷在UNIPOL反應器中是一種惰性氣體。離開甲烷轉化器的氫氣在甲烷化后冷卻器(E-1206)中進行冷卻,然后氫氣經(jīng)過氫氣干燥器(C-1207)

6H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度去除進料氫氣中所含的水和在甲烷化反應中生成的水。脫水后的氫氣然后經(jīng)過氫氣過濾器(Y-1211)除去顆粒雜質,然后進入反應系統(tǒng)。LiquidT2isfedundernitrogenpressurefromitsrespectiveshippingcontainerstotheliquidfullT2FeedPot(C-1505).ThefeedpothasatwohourholdtimeandisequippedwithlevelindicationtoindicatewhenT2containerchangeoutisrequired.FromtheT2feedPottheliquidT2flowstotheAlkylchargepumps(G-1503/G-1504).Thepumpsbuildpressuretoroughly3.9MPagforfeedingtheH/RReactorsand3.1MPagforfeedingtheImpactReactor.Allventsfromthesystemareroutedtosealpot(C-1502)equippedtotrapemissionsforlaterdisposal.液態(tài)三乙基鋁在氮氣壓力下從其運輸罐進入烷基鋁進料罐(C-1505)。該進料罐有兩小時的保持時間并裝有料位計以便了解何時容器排空。三乙基鋁從進料罐進入烷基鋁送料泵(G-1503/G-1504)。送料泵將壓力增至3.9MPa(表壓)以進入抗沖共聚反應器,增至3.1MPa(表壓)以進入均聚和無規(guī)共聚反應器。系統(tǒng)中的排放物都收集在密封罐(C-1502)中,等待將來進一步處理。Amineraloilsystemconsistingofadrumpump(G-1514)andblowtank(C-1512)isprovidedforflushingelementsoftheAlkylsystempriortomaintenance.Wastemineraloil/AlkyliscollectedintheSealPot(C-1502).Periodically,the

7H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度SealPotisdrainedandrechargedwithfreshmineraloil.Thedrainedmineraloil/Alkylmixtureistransferredtodisposaltanksforoffsitedisposal.在進行維修之前,會使用一個由回轉泵(G-1514)和礦物油卸料罐(C-1512)組成的礦物油系統(tǒng)來沖洗烷基鋁系統(tǒng)。廢礦物油/三乙基鋁收集在密封罐(C-1502)中,密封罐定期的排放并重新注入新鮮的礦物油。排放的廢礦物油/三乙基鋁混合物將轉移到處理罐送到界區(qū)外處理。B.PropylenePurification(Part2)丙烯精制(第2部分)FacilitiesareprovidedtopurifyandpumppropylenetotheReactor.Traceamountsofcatalystpoisons,suchaswater,oxygen,carbondioxide,carbonmonoxide,alcohols,andketonesarereducedtoacceptablelevelsinthePurificationSystem.這部分包括精制液態(tài)丙烯以及將丙烯泵入反應器的設施。微量的反應毒物例如水,氧,二氧化碳,一氧化碳,乙醇和酮等在精制系統(tǒng)內被減至聚合反應能夠接受的水平。LiquidpropylenefromthebatterylimitsfeedsdirectlyintothePropyleneDegassingColumn(C).Thecolumnisequippedwithawater-cooledCondenser(E)andasteam-heatedReboiler(E).CoolingwaterpressurefortheCondenserisboostedwiththeDegassingColumnCondenser

8H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度WaterPump(G-).Asmallstreamofoverheadgas,containingpropyleneandstrippedlightcontaminants(O2,CO,CO2,etc.),isventedtobatterylimits.ThebottomproductpassesthroughthePropyleneCooler(E).FromthecoolerthepropylenepassesthroughoneoftwoPropyleneDryers(C-andC-)forremovalofanytracewaterandotherremainingpolarcompounds.液態(tài)丙烯從界區(qū)邊界直接進入丙烯脫氣塔(C-)。塔上裝有一臺水冷的冷凝器(E-)和一個蒸汽加熱的再沸器(E-)。冷凝器的冷卻水靠脫氣塔冷凝水泵(G-)泵出。一小股含有分離出的輕組分雜質(氧氣、一氧化碳、二氧化碳等)的塔頂餾出氣體被送出界區(qū)。塔底排出物則流經(jīng)丙烯冷卻器(E-)。經(jīng)過丙烯冷卻器后,丙烯直接進入兩臺丙烯干燥床(C-,C-)中的一臺去除任何殘存的痕量水和其它殘留的極性化合物。Followingpolarimpurityremoval,thepropylenepressureisboostedbythePropyleneChargePump(G).ThepropyleneisthenfilteredthroughthePropyleneFilter(Y2020)forremovalofparticulatecontaminantsandflowsforwardtotheReactionSystem.在脫除了丙烯中的極性雜質后,接著使用丙烯加料泵(G-)增加丙烯壓力。丙烯然后經(jīng)過丙烯過濾器(Y-2020)以去掉顆粒雜質,進入反應系統(tǒng)。

9H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度NitrogenfromthesupplyheaderisheatedbytheRegenerationHeater(E2114)totherequiredtemperatureforregenerationofthepurificationbedsinPart1andPart?2.從供應源頭來的氮氣由再生加熱器(E-2114)加熱至第一和第二部分的精制床再生需要的溫度。ThePropylenePurificationareadesignwillincludeadrainlinefromeachpurificationbedwhichwillallowpropyleneinthepurificationbedstobedrainedbacktothedegassingcolumnpriortoregeneration,priortoremovingabedfromservice,orforotheroperational/maintenancereasons.Thedegassingcolumn(attheoutletofthePropyleneCooler)willalsohaveadrainlinetotheOSBLtoalsoallowthedrainingofpropylenefromthecolumnforsimilaroperational/maintenancereasons.TheLicensorsstandardpracticefordrainingpropylenefromequipmentuseshighpressurenitrogen.丙烯精制區(qū)的設計將為每個精制床安裝一條排放線,這樣就能夠將精制床里所含的任何丙烯在再生、床層停止操作、或任何其它操作/維護活動之前送回到脫氣塔?；谕瑯拥脑?(位于丙烯冷卻器輸出端的)脫氣塔本身也會配有一條排放線,

10H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度以便把丙烯排向界區(qū)外。專利轉讓方的標準操要求在排放設備中的丙烯時使用高壓氮氣。C.Reaction(Part4A)–聚合反應(第4A部分)ThepolymerizationreactiontakesplaceinafluidizedbedReactor(C4001)atanominalpressureof3.38MPagandanominaltemperatureofaround67°?C.CatalystandreactantsarefedcontinuouslytotheReactor,andthegranularproductisremovedintermittently.ReactantsinthevaporphasearecontinuouslycycledfromthereactorthroughacentrifugalCycleGasCompressor(K4003)andwater-cooledCycleGasCooler(E4002)andbackthroughthereactionbed.Thiscyclegasflowservestofluidizethereactionbedforgoodbackmixing,supplyrawmaterialstoreactionsites,andremoveheatgeneratedbytheexothermicpolymerizationreaction.聚合反應是在流化床反應器(C-4001)內在3.38MPa(表壓)的公稱壓力和約67oC的公稱溫度下發(fā)生。催化劑和反應物被連續(xù)加入反應器,而產(chǎn)品粉料則以批次的方式被移出反應器。氣相中的反應物不斷地離開反應器,經(jīng)過離心式循環(huán)氣壓縮機(K-4003)和水冷的循環(huán)氣冷卻器(E-4002),再回到反應器。這股循環(huán)氣的功能包括對反應器中的固體床層進行流化以達到充分的返混、將原料帶入反應器,并移走聚合反應放出的反應熱。

11H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度Resinpropertiesarecontrolledprimarilybythetypeofcatalystusedandbycyclegascomposition.ThecomputercanmaintainclosedloopcontroloftheresinpropertiesintheReactorbymakinginstantaneouspredictionsoftheresinpropertiesinthereactorandadjustingvariablesasnecessary.Resinpropertiesdonotvarywithproductionrate.反應器所生產(chǎn)的樹脂的性質主要是由所使用的催化劑種類以及循環(huán)氣組成來決定的。計算機能夠經(jīng)過即時地對在反應器中的樹脂性質進行預測并在必要的情況下對反應器變量做出調整來維持對樹脂性質的閉環(huán)控制。樹脂性質并不隨產(chǎn)率的變化而變化。TheReactorisaskirt-supportedvesselwithanexpandedtopsectionfordisengagementofsolidsfromthecyclegasstream.反應器有塔裙支持,頂部有一個擴大段,用于更好地分離循環(huán)氣流中的固體。TheCycleGasCompressorisasingle-stage,constant-speed,centrifugalcompressorwithadoubledrymechanicalseal.Thetypicaloutletpressurefromthecyclegascompressoris3.48MPag.Thecyclegascirculationflowrateiscontrolledbyeitherinletguidevanesordischargethrottlingonthedischargepipingofthemachine.The

12H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度CycleGasCompressormaintainstheoptimalsuperficialgasvelocityforallproductsthroughthecyclegasloop.循環(huán)氣壓縮機是單段、定速、離心式、使用雙層干機械密封的壓縮機。該壓縮機的典型出口壓力為3.48MPa(表壓)。循環(huán)氣的循環(huán)速率是由壓縮機的進口閥門或是出口管節(jié)流閥來控制的。對所有產(chǎn)品床層,循環(huán)氣壓縮機可保持最佳的表觀氣體速度。TheCycleGasCoolerisasinglepassshellandtubeheatexchanger.Cyclegasflowsthroughthetubesandcoolingwatercirculatesthroughtheshellside.ApumpbackwatersystemprovidesreactortemperaturecontrolbyrecirculatinghotcoolingwaterdischargedfromtheshelloftheCycleGasCoolerandrecyclingitbacktomixwiththefreshincomingcoolingwatersupplytotheexchangerusingtheCycleWaterPump(G4004).TheCycleGasCoolerisalsousedasaheaterforreactionstart-upbyinjectingsteamthroughaspargerintothecoolingwaterinletoftheCycleGasCooler.循環(huán)氣冷卻器是單程的管殼式換熱器。循環(huán)氣從管內流過,而冷卻水則從殼層流過。反應器的溫度由一個泵回流水系統(tǒng)控制,從循環(huán)氣冷卻器殼層出來的熱水與新鮮的冷卻水混合,一起經(jīng)過循環(huán)水泵(G-4004)再泵入冷卻器。在反應器啟動開車時,循環(huán)氣冷卻器也可為加熱器。此時將蒸汽從循環(huán)氣冷卻器的冷卻水入口噴入。

13H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度Reactorpressureiscontrolledbyvaryingthepropylenefeedrate.Theconcentrationsofhydrogen,ethylene,andpropyleneinthecyclegasaremeasuredbyanon-linecyclegasanalyzer,andflowsareautomaticallycontrolledasnecessarytomaintaintherequiredcyclegascomposition.反應器壓力是經(jīng)過改變丙烯進料速度來控制的。循環(huán)氣中氫氣、乙烯和丙烯的濃度由一臺在線循環(huán)氣分析儀來測量,而它們的流量在必要時會自動調節(jié),以滿足所要求的循環(huán)氣組成。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:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度聚合催化劑與礦物油混合為淤漿狀,成桶裝運。叉車的尾部安有一個桶罐翻轉裝置(S-4046),幫助傾斜和搬運這些桶。為防止催化劑沉淀,用滾桶器(S-4045)不停地轉動這些桶。經(jīng)過卸料泵(G-4054)將催化劑卸至帶有攪拌器(Y-4041)的淤漿進料罐(C-4040)。催化劑再由淤漿進料泵(G-4043)打入反應器。產(chǎn)率的控制是經(jīng)過控制淤漿進料泵的速度(進而控制進入反應器的催化劑的量)來實現(xiàn)的。使用一個礦物油回轉泵(G-4055)將礦物油從運輸用桶中卸出,用來沖洗該系統(tǒng)。礦物油儲存在礦物油儲存罐(C-4056)中。ProvisionsarealsomadeforadditionofdonortothecyclegassystemthroughtheAdditiveFeedPots(C4060andC-4062).DonorisunloadedfromshippingdrumsusingtheAdditiveDrumPump(G-4069).ThedonorispumpedfromthesevesselstoeitherreactorbytheAditivePumps(G-4061andG-4063).給電子體能夠經(jīng)過給電子體添加罐(C-4060,C-4062)加入到循環(huán)氣系統(tǒng)中。首先用給電子體回轉泵(G-4069)把給電子體從運輸桶中卸下。再將給電子體經(jīng)過給體泵(G-4061,G-4063)打入各個反應器。ThereactorhastwopairsofProductDischargeSystems,whichcanbeoperatedinanalternatingmodeorindependently.EachsystemconsistsoftwoProduct

15H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度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.反應器有兩套產(chǎn)品卸料系統(tǒng),能夠交互運行,也能夠獨立運行。每套系統(tǒng)包括兩個產(chǎn)品倉和兩個產(chǎn)品卸料罐。產(chǎn)品粉料依次從產(chǎn)品倉(C4101,C-4105,C-4106和C-4107)進入產(chǎn)品卸料罐(C-4103,C-4108,C-4110和C-4112)。從那里,產(chǎn)品直接被送進產(chǎn)品接收器(C-5009,當生產(chǎn)均聚物和無規(guī)共聚物時)或是送往輸送罐過濾器(Y-4321,當生產(chǎn)抗沖共聚物時)。Duringaprocessupset,thepolymerizationreactioncanbestoppedorsloweddownwiththekillsystem.ThekillinjectshundredsoftimesmoreCOthantherequiredstoichiometricamountintothereactor.TheexcessamountinsuresacompletekillevenifthemixingofCOisnotcompletelyuniform.Thekillsystemhardwareconsistsof8cylinderbottles(4inusewith4asback-up)containingModifierCat13.0-15.2MPagpressurewithasystemofdistributionpipingandmotoroperatedvalvestorelease

16H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度theModifierCintothereactorwhenthekillsystemlogicisactuated.Thecyclegasturbine(KT-4003)isusedtodrivethecyclegascompressoratareducedspeedinthecaseofelectricalfailure,lossofcyclegasflowindication,andmostcompressorshutdowns.Reactionmaybequicklyreinitiatedbypurgingthepoisonfromthebedtotheflare,therebyreactivatingthereactionofthepolymerizationcatalyst.當出現(xiàn)工藝故障時,能夠經(jīng)過”殺死系統(tǒng)”(或叫”反應終止系統(tǒng)”)使聚合反應停止或減慢。殺死系統(tǒng)將比正常要求的化學計量高百倍以上的一氧化碳注入反應器。過量的注入確保即使在一氧化碳混合不充分的情況下也能完全終止反應。殺死系統(tǒng)的硬件由8個氣瓶(用4個,備4個)組成,其中裝有壓力在13-15.2MPa(表壓)的”殺死劑”C、一套分布管道系統(tǒng)以及在殺死系統(tǒng)邏輯被觸發(fā)時將”殺死劑”C注入反應器的由馬達控制的閥門。當發(fā)生斷電、循環(huán)氣流量顯示失靈以及壓縮機停車時,循環(huán)氣透平(KT-4003)被用來驅動循環(huán)氣壓縮機。想要迅速恢復反應時,將毒物從反應床排出,通往火炬,這樣便能夠重新激活聚合反應。TheinstrumentationnozzlesarekeptclearofresinbypurgingwithvaporizedpropylenefromthePropyleneVaporizer(E4005).

17H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度丙烯蒸發(fā)器(E-4005)送來的氣態(tài)丙烯用來吹掃儀表接口,使其不被樹脂堵塞。Reaction(Part4B)–(ImpactProduction)反應部分(第4B部分)-(抗沖生產(chǎn))TheimpactportionofthepolymerizationreactiontakesplaceinasecondfluidizedbedReactor(C4301)atanominalpressureof2.07MPagandanominaltemperatureofaround70°?C.Theimpactpolymerizationreactorreceiveshomopolymerresin,withcontainedcatalyst,intermittentlyfromtheReactorNo.1ProductDischargeSystem.Reactantsarefedcontinuouslytotheimpactreactor,andthegranularproductisremovedintermittently.ReactantsinthevaporphasearecontinuouslycycledfromthereactorthroughacentrifugalCycleGasCompressor(K4303)andwater-cooledCycleGasCooler(E4302)andbackthroughthereactionbed.Thiscyclegasflowservestofluidizethereactionbedforgoodbackmixing,supplyrawmaterialstoreactionsites,andremoveheatgeneratedbytheexothermicpolymerizationreaction.聚合反應的抗沖部分在第二個流化床反應器(C4301)中進行,公稱反應壓力為2.07MPag,公稱反應溫度約為70oC。含有催化劑的均聚物樹脂從1

18H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度號反應器的產(chǎn)品卸料系統(tǒng)間歇性地進入抗沖聚合反應器。反應物被連續(xù)注入抗沖反應器;生產(chǎn)出的產(chǎn)品粉料則以間歇方式被移走。汽相的反應物不斷地從反應器進入循環(huán)氣壓縮機(K-4303),水冷的循環(huán)氣冷卻器(E-4302),再回到反應器。這股循環(huán)氣的作用主要是:流化反應床層以提供良好的返混效果、將原料攜帶入反應部位以及為放熱的聚合反應撤熱Resinpropertiesarecontrolledprimarilybythetypeofcatalystusedandbycyclegascomposition.Thecomputercanmaintainclosedloopcontroloftheresinpropertiesinthereactorbymakinginstantaneouspredictionsoftheresinpropertiesinthereactor,andadjustingvariablesasnecessary.樹脂性質主要是由催化劑種類和循環(huán)氣組成決定的。計算機經(jīng)過實時預測反應器中樹脂的性質并在必要時相應地調整參數(shù)值,對反應器內樹脂性質進行閉路控制。Thereactorisaskirt-supportedvesselwithanexpandedtopsectionfordisengagementofsolidsfromthecyclegasstream.反應器有塔裙支持,頂部有一個擴大段,用于分離循環(huán)氣流中的固體。TheCycleGasCompressor(K-4303)isasingle-stage,constant-speed,centrifugalcompressorwithadoubledrymechanicalseal.Thetypicaloutletpressurefromthe

19H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度cyclegascompressoris2.22MPag.Thecyclegascirculationflowrateiscontrolledbyeitherinletguidevanesorsuctionthrottlingonthesuctionpipingtothemachine.TheCycleGasCompressormaintainstheoptimalsuperficialgasvelocityforallproductsthroughthecyclegasloop.循環(huán)氣壓縮機(K-4303)是單段、定速、離心式、使用雙層干機械密封的壓縮機。該壓縮機的典型出口壓力為2.22MPag。循環(huán)氣的循環(huán)速率是由壓縮機出口管控制閥來控制的。對所有經(jīng)過循環(huán)氣回路的產(chǎn)品,循環(huán)氣壓縮機都保持最優(yōu)的表觀氣速。TheCycleGasCooler(E-4302)isasinglepassshellandtubeheatexchanger.Cyclegasflowsthroughthetubesandcoolingwatercirculatesthroughtheshellside.Apump-backwatersystemprovidesreactortemperaturecontrolbyrecirculatinghotcoolingwaterdischargedfromtheshelloftheCycleGasCoolerandrecyclingitbacktomixwiththefreshincomingcoolingwatersupplytotheexchangerusingtheCycleWaterPump(G4304).TheCycleGasCoolerisalsousedasaheaterforreactionstart-upbyinjectingsteamthroughaspargerintothecoolingwaterinletoftheCycleGasCooler.

20H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度循環(huán)氣冷卻器(E-4302)是單程的管殼式換熱器。循環(huán)氣從管內流過,而冷卻水則從殼層流過。反應器的溫控是經(jīng)過使用一個(泵壓回水)調節(jié)系統(tǒng)實現(xiàn)的:從循環(huán)氣冷卻器殼層出來的熱水循環(huán)回來與新鮮的冷卻水混合,一起經(jīng)過循環(huán)水泵(G－4304)再泵入換熱器。在反應器啟動開車時,循環(huán)氣冷卻器也可為加熱器。此時將蒸汽從循環(huán)氣冷卻器的冷卻水入口噴入,以此加熱反應氣體。HomopolymerresinisfedtothereactorfromtheReactionSystemNo.1ProductDischargeSystembydensephaseconveyingtotheTransferTankFilters(Y4312andY-4322).TheresindisentrainsfromtheconveyinggaswhichpassesthroughtheTransferTankFiltertotheVentRecoverySystem(seePart5B).均聚樹脂從1號反應器的產(chǎn)品卸料系統(tǒng)以密相傳輸?shù)姆绞?經(jīng)過輸送罐過濾器(Y-4312或Y-4322)進入2號反應器。樹脂與傳輸氣體分離,后者經(jīng)過輸送罐過濾器后進入尾氣回收系統(tǒng)(見5B部分)。TheresinflowsbygravitytotheTransferTanks(C4311andC-4321).Whentheconveyingiscomplete,theTransferTankisisolatedfromtheTransferTankFilterandpressurizedupusingcyclegasfromthedischargeoftheCycleGasCompressor.Thehomopolymerresinistransferredintothereactorbygravityflowaidedbythecompressor-to-reactor

21H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度pressuredifferential.GasremainingintheTransferTankisrecoveredintheVentRecoverySystem.樹脂在重力作用下落入輸送罐(C-4311或C-4321)。傳送完成后,輸送罐與輸送罐過濾器隔離,再用從循環(huán)氣壓縮機輸出的循環(huán)氣將輸送罐的壓力增加。然后均聚樹脂靠壓縮機與反應器間壓降的幫助,在重力作用下落入反應器。輸送罐中的殘余氣體由廢氣回收系統(tǒng)回收。Thereactorhastwoproductdischargesystemswhichnormallyoperateinanalternatingmodeorcanbeoperatedindependently.EachsystemconsistsofaProductChamberandaProductBlowTank.ThegranularproductdropssequentiallyfromtheProductChamber(C4401andC4406)totheProductBlowTank(C4403andC4408)fromwhichitisconveyeddirectlytotheProductReceiver(C-5013).反應器有兩套產(chǎn)品卸料系統(tǒng),能夠交互運行,也能夠獨立運行。每套系統(tǒng)包括一個產(chǎn)品倉和一個產(chǎn)品卸料罐。產(chǎn)品粉料依次從產(chǎn)品倉(C-4401和C-4406)進入產(chǎn)品卸料罐(C-4403和C-4408)。從那里,產(chǎn)品直接被送往產(chǎn)品接收器(C-5013)。Duringaprocessupset,thepolymerizationreactioncanbestoppedorsloweddownwiththekillsystem.ThekillinjectshundredsoftimesmoreCOthantherequiredstoichiometricamountintothereactor.Theexcessamount

22H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度insuresacompletekillevenifthemixingofCOisnotcompletelyuniform.Thekillsystemhardwareconsistsof4cylinderbottles(2inusewith2asback-up)containingModifierCat13.0-15.2MPagpressurewithasystemofdistributionpipingandmotoroperatedvalvestoreleasetheModifierCintothereactorwhenthekillsystemlogicisactuated.當出現(xiàn)工藝故障時,能夠經(jīng)過系統(tǒng)使聚合反應停下來或使其慢下來。殺死系統(tǒng)將比正常要求的化學計算量高百倍以上的一氧化碳注入反應器。過量的注入確保即使在一氧化碳混合不充分的情況下也能完全殺死反應。殺死系統(tǒng)的硬件由4個鋼瓶(用2個,備2個)組成,其中裝有壓力在13-15.2MPa表壓的”殺死劑”C、一套分布管道系統(tǒng)以及在殺死系統(tǒng)邏輯被觸發(fā)時將”殺死劑”C注入反應器的由馬達控制的閥門。D.ResinDegassing(Part5A)–樹脂脫氣(第5A部分)ResintransfersfromtheReactorProductDischargeSystemtotheProductPurgeBin(PPB)(C-5009)usingadensephaseconveyingsystem.Theconveyinggas,amixtureofentrainedhydrocarbons,andnitrogen,separatesfromtheresininthedisengagingspaceofthebin.Thisgas,togetherwiththereactorcyclegasvent,flowsthroughthe

23H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度ProductPurgeBinFilter(Y5010)forremovalofentrainedsolidspriortoenteringtheVentRecoverySystem.樹脂經(jīng)過一套密相傳輸系統(tǒng)由產(chǎn)品卸料系統(tǒng)送入產(chǎn)品脫氣倉(C-5009)。利用接倉體的分離部分將夾帶著碳氫化合物和氮氣的傳輸氣與樹脂分離。這股氣體,加上反應器的循環(huán)氣尾氣,先經(jīng)過產(chǎn)品脫氣倉過濾器(Y－5010)將其中的固體分離出來,然后再進入尾氣回收系統(tǒng)。ThePPBconsistsofthreesections.Thetopsectionofthebinisusedforresinsurgeand/ordisengagementspacefortheconveyinggasandresin.Thebottomsectionisusedtohydrolyzeresidualalkylsusingasteam/nitrogenmixture.Themiddlesectionfunctionsasabarrierbetweenthetopandbottombinsections.ThissectionpreventssteamfrombeingcarriedupthroughthebinandintoventrecoveryandalsohelpstominimizetheamountofmonomerlostthroughthebedthatisrecoveredintheVentRecoverySystem.產(chǎn)品脫氣倉由三部分組成。倉的頂部用來作為樹脂的緩沖空間和/或輸送氣和樹脂的分離空間。底部利用蒸汽/氮氣的混和物來中和殘余的三乙基鋁。中間部分作為位于頂部和底部的一個緩沖。這一部分能夠阻止蒸汽被攜帶出倉體進入尾氣回收,同時能夠幫助經(jīng)過床體在尾氣回收單元回收的單體量最小,

24H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度Arecycledlightsvent(ormake-upnitrogen)fromventrecoveryisinjectedintothetopinternalconeofthePPB,andsweepsinterstitialhydrocarbonsanddissolvedhydrocarbonsfromtheresin.Nitrogen,conveyinggas,andhydrocarbonsevolvedfromresin,exitthetopofthebinthroughthePPBFilterandontotheVentRecoverySystem.從尾氣回收來的回收輕組分氣體(或者補充氮氣)被注入到產(chǎn)品脫氣倉的頂部內錐體,吹掃樹脂間隙中的碳氫化合物或者溶解的碳氫化合物。氮氣,輸送氣和從樹脂中釋放出來的碳氫化合物經(jīng)過產(chǎn)品脫氣倉過濾器離開倉的頂部進入尾氣回收系統(tǒng)。NitrogenandsteamaremixedandenterthebottominternalconeofthePPB.Thenitrogenisheated(byasteamjacket)beforebeingmixedwiththesteamtoavoidsteamcondensation.Thesteamrisesthroughthelowersection,hydrolyzingtheresidualaluminumalkylsandanyremainingactivecatalystgranules.Theresidualsteam,nitrogenandsomeevolvedhydrocarbonsareremovedasasidestreamfromunderthebottommiddle(collection)cone.氮氣和蒸汽混合并進入產(chǎn)品脫氣倉的底部內錐體。加熱后的氮氣(由蒸汽夾套)再與蒸汽混合防止蒸汽冷凝。蒸汽上升經(jīng)過底下部分,

25H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度水解殘余的三乙基鋁和其它殘留的活性催化劑顆粒。余留的蒸汽,氮氣和一些釋放出來的碳氫化合物從下中部(收集)錐體下面作為一股邊料排出。AnitrogenstreamisalsosenttotheuppermiddleinternalconeofthePPB.ThisconeactsasabarrierbetweenthebottomandtopsectionsofthePPB.Enoughnitrogenisusedtoensurethatsomenitrogenisbeingcarriedupthroughthebed(withtherecycledlights,conveyinggasandhydrocarbons)anddownthroughthebedtoberemovedwithsteamandothernitrogenoutthroughthecollectioncone.ThisbarrierconewillhelpensurenosteamescapesthroughthebinandintotheVentRecoverySystemandthatminimalmonomerwillbecarriedfromthetopofthebinandlostthroughthecollectioncone.在產(chǎn)品脫氣倉上中部內部錐體還進來一股氮氣。這部分錐體作為產(chǎn)品脫氣倉的底部和頂部的一個緩沖。這里用了足夠的氮氣以確保有部分氮氣能往上經(jīng)過床層(和回收輕組分,輸送氣和碳氫化合物),往下經(jīng)過床層并在收集錐體段和蒸汽和其它氮氣一起排出。這個緩沖錐段將幫助確保沒有蒸汽逃逸經(jīng)過倉體進入尾氣回收系統(tǒng),而且把保證只有最少量的單體能過被帶到倉體上部,已經(jīng)在收集錐體段被損失掉。ThecollectionconesidestreamisventedtotheflareafterpassingthroughtheLowProductPurgeBinFilter

26H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度(Y-5019).Thesidesteamflowrateiscontrolledtobegreaterthantheenteringsteam/nitrogenmixture.Thiscontrolensuresthataknownamountofnitrogenisforceddownwardfromthe‘barrier’conetopreventsteamfromenteringtheVentRecoverySystem.收集錐體段的側面那股流體將在經(jīng)過產(chǎn)品脫氣倉底部過濾器(Y-5019)后送到火炬。這股流體的流量被控制在大于進入的蒸汽/氮氣混合的流量,確保有一定已知量的單體在緩沖錐段被強制向下防止蒸汽進入尾氣回收系統(tǒng)。ResinfromthePPBpassesthroughtheProductPurgeBinRotaryFeeder(S-5015)andflowsbygravityintotheAdditiveAdditionandPelletingSystems.PPBleveliscontrolledbythespeedofthePPBRotaryFeeder.樹脂從脫氣倉出來后,進入產(chǎn)品脫氣倉的旋轉進料器(S-5015)。樹脂在重力作用下進入添加劑添加系統(tǒng)和造粒系統(tǒng)。產(chǎn)品脫氣倉的料位由產(chǎn)品脫氣倉旋轉進料閥的轉速控制。ResinisrecirculatedintheProductPurgeBinforhighFcproductsusingtheProductPurgeBinResinConveyor(S-6263).高Fc產(chǎn)品的樹脂會經(jīng)過產(chǎn)品吹掃罐輸送器(S-6263)送回產(chǎn)品吹掃罐。E.VentRecovery(Part5B)尾氣回收(第5B部分)

27H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度TheVentRecoverySystemisdesignedtorecovermonomers,propyleneandethylene,fromstreamsthatareventedfromtheResinDegassingSystem.TheProductPurgeBin(PPB)ventsandtheTransferTank(C-4311and4321)areseparatedintothreemainstreams.Thefirst,nitrogenandethanerichstream,isrejectedtopreventaccumulationintheReactionSystem.Thesecond,amonomer-richstreamarerecycledbacktothereactionarea.Thethird,propane,isalsorejectedtopreventpropaneaccumulation.尾氣回收系統(tǒng)用于回收樹脂脫氣系統(tǒng)尾氣中的單體丙烯和乙烯。產(chǎn)品脫氣罐和產(chǎn)品轉移罐(C-4311,C-4321)的尾氣被分為三股主要的氣流。第一股富含氮和乙烷的氣體被排出,以防止其在反應系統(tǒng)內的累積。第二股富含單體的氣流被送回至反應區(qū)。第三股丙烷也被排出,以防止丙烷的累積。Compression:Compressionfacilitiesarenecessarytoconvertlow-pressureventstreamsintohigh-pressurestreamsthatwillallowpropylene/propanetobecondensed.ThefacilitiesalsoprovidearecyclingrefrigerantstreamtotheAutorefrigerationSystem.TheVentRecoveryCompressor(K5214)isanelectricallydriven,three-stage,vertical,reciprocatingmachine.TheCompressorSuction

28H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度GuardFilter(Y5243)protectstheVentRecoveryCompressorbytrappingfinesuponfailureoftheupstreamprimaryfilters.TheVentRecoveryCooler(E5224)isprovidedtocoolProductDischargeSystem(PDS)ventspriortocompression.壓縮:為了將低壓尾氣轉化為高壓氣流,以便丙烯/丙烷的冷凝,有必要使用壓縮裝置。這套壓縮裝置能夠同時提供用于自動冷凍系統(tǒng)的循環(huán)冷凍液。尾氣回收壓縮機(K-5214)是一臺電動三段式垂直往復式壓縮機。當上游主要過濾器出現(xiàn)故障時,壓縮機入口保護過濾器(Y-5243)能夠被用來阻止顆粒經(jīng)過。當反應系統(tǒng)進行產(chǎn)品卸料時,尾氣回收緩沖罐(C-5236)能夠減緩產(chǎn)品接收器內的壓力波動。在產(chǎn)品卸料系統(tǒng)尾氣進入壓縮機之前,使用產(chǎn)品接收器尾氣冷卻器(E-5224)將其冷卻。TheCompressor'sfirst-stageflowismadeupofthePPBventsandtheTransferTankFiltervents.ThesecondstagefeediscomprisedoffirststagedischargeandrecycledrefrigerantflowfromtheRefrigerationInterchanger(E-5231).ThesecondstagedischargeisroutedtotheLightsRecycleSurgeTank(C-5229).StreamsleavingtheLightsRecycleSurgeTankareroutedtotheProductBlowTanks(PBT’s)intheReactionProductDischargeSystemstoserveasgranularresinconveyingassistgasforbothHomopolymer

29H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度/RandomcopolymerproductioninC-4001andImpactCoplymerproductioninC-4301.LightsRecyclenotrequiredforconveyingassistgasisrecycledbacktothesuctionofthethirdstageoftheVentRecoveryCompressor.ConveySystemAssistGas.DuringHomopolymer/RandomCoplymerproduction,thethirdstagefeedalsoincludesventsfromtheDegassingPot(C5257)andtheRecoveryColumn(C5260).DuringImpactCopolymeroperation,theseventsareroutedtoReactionSystemC-4301.Thethird-stagedischargepressureiscontrolledat4.14MPag.Thecompressorcapacityiscontrolledusingunloadersandathird-stagedischargepop-over(recycle)valve.TheCompressorloadsonhighsuctionpressuresandunloadsonlowsuctionpressures.壓縮機第一段的氣流為產(chǎn)品脫氣罐和轉移罐過濾器尾氣所組成。壓縮機第一段的排料與來自冷凍換熱器(E－5231)的循環(huán)冷凝液組成壓縮機第二段的進料。第二段的排料被送到輕組分回收緩沖罐(C-5229).離開輕組分回收緩沖罐的物流被送到反應部分的產(chǎn)品下料系統(tǒng)中的產(chǎn)品吹出罐(PBT),作為粉料樹脂的輸送輔助氣用于反應器1的均聚/無軌共聚物的生產(chǎn),和反應器2的抗沖共聚物的生產(chǎn)。沒有被要求作為輸送輔助氣的回收輕組分被送回到尾氣回收壓縮機第三段的入口。在生產(chǎn)均聚/無軌共聚物的時候,

30H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度第三段的進料同時也包括從脫氣罐(C-5257)和回收塔(C-5260)來的尾氣。在生產(chǎn)抗沖共聚物的時候,這些尾氣被送回C-4301反應系統(tǒng)。第三段的出口壓力控制在4.14MPa(表壓)。壓縮機的總能力由卸載器和第三段出口的安全閥來控制。壓縮機在高吸入壓下加載,在低吸入壓下卸載。Autorefrigeration:TheAutorefrigerationSystemrecoverspropyleneandethylenewhilerejectinganitrogen-richstream.ThesystembeginswiththeCompressorAftercooler/Condenser(E5230)whichcondensespropyleneandpropanefromthecompressordischargeusingcoolingwater.TheliquidcanbesplitbetweentheReactionSystemC-4001andtheDistillationSystemduringHomopolymer/Randomproduction.AlloftheliquidisroutedtotheDistillationSystemduringImpactCopolymerproduction.自動冷凍系統(tǒng):自動冷凍系統(tǒng)在排出富含氮氣的氣流的同時回收其中的丙烯和乙烯。系統(tǒng)前端的壓縮機后冷器/冷凝器(E-5230)用冷卻水冷凝壓縮機排放中所含的丙烯和丙烷。在生產(chǎn)均聚/無軌共聚物時,冷凝液一部分回到反應系統(tǒng)C-4001,一部分進入分餾系統(tǒng)。在生產(chǎn)抗沖共聚物的時候,全部的冷凝液都被送到分餾系統(tǒng)。ThevaporfromthecondenserispartiallycondensedintheRefrigerationInterchanger(E5231).ThephasesareseparatedintheVentRecoverySeparator(C5204).Liquid

31H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度fromtheseparatorissplitintorefrigerantandrecoveredpropylene.TherefrigerantispartiallyflashedandthenintroducedintotheInterchanger.TherefrigerantexitstheInterchangercompletelyvaporizedandflowstothesecondstagesuctionoftheVentRecoveryCompressor(K-5214).TherecoveredliquidpropyleneisheatedintheInterchangerandcanbesenttotheDistillationSystem(Homopolymer/RandomCopolymerproduction)orReactionSystemC-4301(ImpactCopolymerproduction)..ThevaporleavingtheseparatorisalsoheatedintheInterchangerandsenttotheProductPurgeBin(C-5009)assweepgas.從冷凝器出來的蒸汽經(jīng)由冷凍換熱器(E-5231)部分冷凝。各相在尾氣回收分離器(C-5204)中被分離。從分離器中分離出的液體被進一步分為冷凍劑和回收的丙烯。冷凍劑被部分閃蒸后送入換熱器。從換熱器出來的冷凍劑已經(jīng)完全蒸發(fā)汽化,并接著進入尾氣回收壓縮機(K-5214)的第二段吸入?；厥諄淼囊后w丙烯在換熱器中被加熱,接著被送入分餾系統(tǒng)(均聚/無軌共聚物生產(chǎn)),或者C-4301反應系統(tǒng)(抗沖共聚物生產(chǎn))。從分離器中出來的蒸汽也在換熱器中被加熱,再送到產(chǎn)品脫氣倉(C-5009)作為吹掃氣。LightsRecycleSystem:TheLightsRecycleSurgeTank(C5229)providessurgeforintermittentconveyinggasrequirementsforReactionSystemC-4001PDS.

32H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度輕組分回收系統(tǒng):輕組分回收緩沖罐(C-5229)為反應系統(tǒng)C-4001的PDS提供了間歇輸送氣的緩沖。Whenpossible,lightsrecyclefromtheRefrigerationInterchanger(E-5231)shouldbeusedforReactionSystemC-4301inertscontrol.LightrecyclefromtheRefrigerationInterchangerisalwaysusedforProductPurgeBinsweepgas.Lightgasesthatarenotusedarerejectedtotheflare.如果可能,從冷凍換熱器(E-5231)回收的輕組分會作為C-4301反應系統(tǒng)的惰性控制。從冷凍換熱器回收的輕組分總是被作為產(chǎn)品脫氣倉的吹掃氣。不被利用的輕組分氣體會被排到火炬。Distillation:TheDistillationSystemisusedtoseparatepropanefrompropyleneinordertoprovideaconcentratedpropanestreamforreturntoOSBLfacilities.Theseparationoccursintwosteps.ThefirststepisthedepressurizationoftherecoveredliquidsintheDegassingPot(C5257).Thisstepremoveslightsfromtheliquidsteamandreducestheloadonthesecondstep,distillationintheVentRecoveryColumn(C5260).TheDegassingPotfeedoriginatesfromtheCompressorAftercooler/Condenser(E5230)andtheRefrigerationInterchanger(E5231).

33H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度分餾系統(tǒng):分餾系統(tǒng)將丙烷與丙烯分離,以得到濃縮的丙烷送至界區(qū)外。分離分兩步進行。第一步是脫氣罐(C-5257)中回收液體的減壓。這一步將液體中的輕組分分離出來,這樣能夠減小第二步(尾氣回收塔(C-5260)中的分餾)的荷載。脫氣罐進料來自壓縮機后冷器/冷凝器(E-5230)和冷凍換熱器(E-5231)ThevaporleavingtheRecoveryColumnDegassingPotiscombinedwiththerecoverycolumnvent.ThemixtureisthenrecycledtotheVentRecoveryCompressor(Homopolymer/RandomCopolymerproduction),orReactionSystemC-4301(ImpactCopolymerproduction).LiquidfromtheRecoveryColumnDegassingPotisfedtothecolumn.從回收塔脫氣罐出來的氣體與回收塔尾氣合并在一起,一并被送回尾氣回收壓縮機(均聚/無軌共聚物的生產(chǎn)),或者C-4301反應系統(tǒng)(抗沖共聚物的生產(chǎn))。回收塔脫氣罐中的液體被送回塔內。TheRecoveryColumn(C5260)usesastab-inRecoveryColumnReboiler(E5268)andanintegralpartialRecoveryColumnCondenser(E5261).CoolingwaterforthecondenserispumpedwiththeRecoveryColumnBoostPump(G5259).Thecolumnoperatesatapproximately2.17MPagandcanbeconfiguredintwooperationmodes.DuringHomopolymer/RandomCopolymerproduction,thefeedentersseveraltrays

34H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度downfromthetoptrayandtheliquidrecyclestreamleavesfromtheRecoveryColumnCondenser.DuringImpactCopolymerproduction,thefeedentersatthetoptraywhileliquidrecycleistakenfromseveraltraysbelowthefeedtraytoallowethyleneremovalforrecycletoReactionSystemC-4001.TherecyclestreamisreturnedtoReactionSystemC-4001viatheRecoveredPropylenePump(G5269).TheWaterInjectionPump(G5275)injectswaterintothecolumnbottomsstream,toneutralizeanytraceamountsofco-catalysts.回收塔(C-5260)中裝有一個插入式再沸器(E-5268)和一個內在的部分冷凝器(E-5261)。冷凝器中的冷卻水由回收塔增壓泵(G-5259)泵入?；厥账僮鲏毫?.17MPa(表壓)并有兩種操作模式。生產(chǎn)均聚物/無規(guī)共聚物時,進料從頂部的塔盤接連進到幾個塔盤之下,而循環(huán)液體則從冷凝器的部位排出。生產(chǎn)抗沖共聚物時,進料從頂部塔盤進來,再在幾個塔盤之下的位置取出循環(huán)液體,回收其中的乙烯,送回1號反應器。循環(huán)物流經(jīng)過回收丙烯泵(G-5269)送回1號反應器。回收塔底的丙烷物流在流過水冷的回收塔冷卻器被冷卻。進水泵(G-5275)將水射入塔底的物流,用以中和其中可能存在的少量催化劑。F.ResinAdditiveHandling(Part6)樹脂添加劑的處理(第6部分)

35H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度ResinAdditiveHandlingbeginsattheoutletoftheProductPurgeBinRotaryValve(S5015)andendsattheinletoftheMixer(Y7001).Itincludesthehandlingandfeedingofgranularresinandliquidandsolidadditives.樹脂添加劑的處理從產(chǎn)品脫氣倉的旋轉閥(S-5015)出口開始,到混合器(Y-7001)的入口為止。這部分包括樹脂粉料、液態(tài)及固態(tài)添加劑的處理和進料。GranularResinSystem樹脂粉料系統(tǒng):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).樹脂從產(chǎn)品脫氣倉的旋轉進料閥(S-5015)出來,在重力作用下進入樹脂/添加劑傳送器(S-6620)。樹脂粉料的質量流速度可在DCS中根據(jù)脫氣倉旋轉閥速度、

36H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度閥門填充效率和產(chǎn)品密度計算。該數(shù)值被作為固體添加劑進料器(S-6241,S-6242,S-6263,S-6245,S－6254)和液體添加劑泵(G－6214)的主要控制變量。樹脂從樹脂/添加劑傳送器進入擠出機進料料斗/尾氣過濾器(Y-6211)。該料斗中的固體物料在重力作用下進入混合器(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:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度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).添加劑的加入:固體添加劑是用袋子、桶和大型包裝袋包裝的。需移動時,使用叉車(S-6225)或碼垛機(S-6226);需將它們運至添加劑該有的高度時,先使用添加劑升降機(S－6219),然后,包裝在袋子中的添加劑被倒入倒袋站/傾倒斗(Y－6231-Y-6233)。以桶包裝的添加劑經(jīng)過使用一個連接器與可移動式倒桶器(S-6264)相連,以傾入倒袋站/傾倒斗(Y－6231-Y-6233)中。以大型包裝袋包裝的添加劑倒入大型包裝出料器(S-6272和S-6253)中。添加劑在重力作用下從卸料站/出料器進入添加劑緩沖罐(D6236-D-6238,D-6270,和D-6250)。將氮氣充入緩沖罐,置換出氧氣,以免影響產(chǎn)品質量。吹掃用過的氮氣經(jīng)過卸料斗上的過濾器或添加劑緩沖罐(用于大型包裝袋的形式)上的過濾器(Y-6271和Y-6251

38H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度)離開系統(tǒng)。貯存在添加劑緩沖罐中的固體添加劑在重力作用下進入固體添加劑進料器(S-6241,S-6242,S-4243,S-6245,S－6254),其流量能夠以旋轉進料器(閥門)的質量流量為基礎,經(jīng)過比例控制來計量。接著,添加劑在重力作用下從進料器進入樹脂/添加劑傳送器(S－6220),在那里與主要的那一股樹脂粉料合并在一起,進入混合器的進料斗(Y-6211)LiquidAdditiveAddition液體添加劑:LiquidadditiveispumpedfromshippingcontainersintotheLiquidAdditiveTank(C-6213)usingtheLiquidAdditiveDrumUnloadingPump(G-6215).TheadditiveispumpedfromthetanktotheMixerFeedHopper(D-6211)usingtheLiquidAdditivePump(G6214).TheflowrateofliquidadditiveismeteredbyratiocontrolbasedontheProductPurgeBinRotaryFeeder’s(S-5015)massflowrate.液體添加劑由液體添加劑卸料泵(G-6215)將添加劑從桶中泵入到液體添加劑罐(C-6213)。然后用液體添加劑泵(G－6214)將添加劑泵入混合器進料斗(D-6211)。其流量能夠以旋轉進料器(S-5015)的質量流率為基礎,經(jīng)過比率控制來計量。ResinRecirculationandSeedBedCollection樹脂循環(huán)和種子床收集TheProductPurgeBinResinConveyor(S-6263)isusedtocirculatehighFcproductswhenthepelletinglineisnotoperating.TheProductPurgeBinResinConveyorisalso

39H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度usedtochargereactorseedbedresinbyplacingtheGranularResinDiverterValve(Y6201)inthedivertposition.當造粒線沒有運行的時候,產(chǎn)品脫氣倉樹脂輸送器(S-6263)被用來循環(huán)高Fc的產(chǎn)品。產(chǎn)品脫氣倉樹脂輸送器在將粉料樹脂轉換閥(Y-6201)處于轉換位置時,還被用于將種子床樹脂裝入反應器。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:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度waterreturnstothepelletwatersystemconsistingofaPelletingWaterTank(D7008),aPelletingWaterPump(G7012),andaPelletingWaterCooler(E7020).DrypelletsaredischargedtoaPelletScreener(Y7013)whereoversizepelletsareremoved.Theproductpelletsgravity-flowintoresinhandlingfacilities.主要的樹脂粉料、母料以及從樹脂添加劑運輸系統(tǒng)來的液體添加劑都經(jīng)過混合器進料料斗(D-6211)進入混合器(Y-7001)。這些物料在混合器內被混合和熔化后,熔融的聚合物進入熔融泵(Y-7004)。氮氣和其它脫揮而來的碳氫化合物從尾氣室(Y-7014)排到火炬。熔融態(tài)的樹脂經(jīng)過換向閥(Y-7002)進入熔融濾網(wǎng)(Y-7005)。在線熔體流變儀(Y-7003)監(jiān)視經(jīng)過換網(wǎng)器的聚合物的熔融指數(shù)。熔融態(tài)聚合物接著經(jīng)過低壓降模板(Y-7006)進入水下造粒機(Y-7007),轉動的刀片將熔融物切為顆粒。顆粒和水的混合物被泵入團塊分離器(Y-7009)和顆粒烘干器(Y-7010)。其中的水返回由造粒水罐(D-7008)、造粒水泵(G-7012)以及造粒水冷卻器(E-7020)組成的造粒水系統(tǒng)。干燥的產(chǎn)品顆粒進入顆粒篩選器(Y-7013),將尺寸偏大的顆粒篩除。產(chǎn)品顆粒在重力作用下落入樹脂處理裝置。TheAuxiliaryFacilitiestotheUNIPOLPPplantaredescribedinthefollowingsections:ThesefacilitiesaretobedesignedbyLicenseewiththeexceptionofResin

41H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度HandlingandBlending.ThisallowsLicenseetotakeadvantageofsynergieswiththePEunit.LicensorwillprovidesupportingUNIPOLPPprocessinformationforthesefacilities.TheResinHandlingandBlendingwillbeincludedinLicensor’sPDP.UNIPOL聚丙烯工廠的輔助設施在下面部分進行描述:這些設施將由專利受讓方進行設計(除了樹脂處理和摻混)。這使專利受讓方能夠享受和聚乙烯裝置同步的好處。專利轉讓方將提供這些設施的UNIPOL聚丙烯工藝信息進行支持。樹脂處理和摻混將包含在轉讓方的工藝包中。3AuxiliaryProcessFacilities輔助工藝設施ThefollowingAuxiliaryProcessFacilitiessupporttheUNIPOLPPProcessunitdescribedabove.　上述UNIPOLTM聚丙烯工廠的輔助工藝設施如下。ResinHandlingandBlending(tobeincludedinContractPlantscopeinPDP)樹脂摻混和處理(將包括在工藝包的合同工廠范圍內)ControlSystem(DCSandSCS)控制系統(tǒng)(DCS和SCS)UtilityDistributionSystems公用工程系統(tǒng)Power電Steam(LP,MP)　蒸汽(低壓,中壓)CondensateCollectionSystem　冷凝液收集系統(tǒng)

42H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度CoolingWater　冷卻水DemineralizedWater　脫鹽水PotableWater　飲用水FreshWater　新鮮水Nitrogen　氮氣InstrumentAir儀表風PlantAir　工廠風ProcessVent(Flare)HeaderSystem工藝尾氣(火炬)總管系統(tǒng)WasteWaterTreatment廢水處理TracingSystem設備管道加熱保溫系統(tǒng)FirefightingSystem消防系統(tǒng)HCDetectionandSafetyAlarmSystem　可燃物探測和安全警報系統(tǒng)H.ResinHandlingandBlending(Part8)　　樹脂摻混和處理(第8部分)TheresinhandlingsystembeginsattheoutletofthepelletdryerinPart7ofthePPProcessUnitandendsatthefeedtothebaggingsystem.Thefollowingisageneraldescriptionoftheresinhandlingsystem.樹脂處理系統(tǒng)從位于聚丙烯工藝單元第7部分的樹脂干燥器出口開始,到包裝系統(tǒng)的入口結束。下面給出有關樹脂處理系統(tǒng)的一般的描述。

43H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度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.成品顆粒從烘干機(Y-7010)出來后,在重力作用下進入裝載篩選器以剔除所有尺寸過大的顆粒。篩選器出來的顆粒進入顆粒接收料斗(Y-8001)。旋轉進料器將顆粒從顆粒接收料斗(Y-8001

44H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度)送入一個稀相傳送系統(tǒng)。這套系統(tǒng)包含專用的顆粒產(chǎn)品輸送鼓風機(K-8003K-8004),它將產(chǎn)品顆粒運往其中一個摻混倉。由于UNIPOLTM聚丙烯產(chǎn)品顆粒優(yōu)異的均一性,幾乎不需要額外的摻混。所有的摻混倉(D-8007–D-8011)都是單程重力流摻混器,其中可能含有目標牌號,接近目標牌號或等外的產(chǎn)品。由鼓風機(K-8050,K-8051)來的壓縮空氣通入各摻混倉,使任何殘留的揮發(fā)性碳氫化合物不至于累積到可能引發(fā)爆炸的濃度。當生產(chǎn)經(jīng)過裂解的聚丙烯產(chǎn)品時,摻混倉的出口氣體由來自其中一臺鼓風機的空氣進行稀釋,以達到當?shù)刂袊呐欧艠藴省heresinhandlingsystemisdesignedtohandlethreequalitygradesofresin.樹脂處理系統(tǒng)是設計用來處理三種不同質量的樹脂的Aim-gradepellets目標牌號產(chǎn)品顆粒Near-aim-gradepellets接近目標牌號產(chǎn)品顆粒Off-specificationpellets等外品顆粒AimGradeResinHandling:Resinwithpropertieswithinthequalitycontrolrangeisclassifiedasaimgradeandisconveyedtoabindesignatedtoreceiveaimgradeviathediverters.目標牌號樹脂的處理:凡是性質指標落在質量控制范圍內的樹脂就被定義為目標牌號樹脂,而且會經(jīng)過一個分流器被送往專門用來儲存目標牌號樹脂的產(chǎn)品料倉。

45H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度Near-AimGradeResinHandling:Resinwithpropertiesslightlyoutsidethequalitycontrolrangeisclassifiedasnear-aimgrade(alsocallednon-aim)andisconveyedtoabindesignatedtoreceivenear-aim-gradeproductviathediverters.Forupgradingnear-aim-gradeproducttoaim-gradeproduct,thenear-aim-gradeproductcanbeconveyedtotheaim-gradeblendbinsusingnear-aim-graderotaryfeedersanddiverters.Thesetwomaterialsareblendedinthebins.接近目標牌號樹脂的處理:凡是性質指標落在質量控制范圍之外不遠的樹脂被定義為接近目標牌號樹脂(也稱為非目標牌號樹脂),而且會經(jīng)過一個分流器被送往專門用來儲存非目標牌號樹脂的產(chǎn)品料倉。為了將非目標牌號樹脂升級為目標牌號樹脂,能夠經(jīng)過非目標牌號旋轉進料器和分流器將非目標牌號產(chǎn)品送入目標牌號摻混倉。兩種物料在倉內混合。Off-specificationResinHandling:Pelletedresinclassifiedasoff-specificationisdivertedtoadesignatedbintoreceiveoff-specificationproduct.Theoff-specificationproductisnotfurtherblendedasitisnotsuitableforupgradingtoaim-ornon-aim-gradeproducts

46H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度等外品的處理:被分類為等外品的樹脂經(jīng)過一個分流器被送往一個專門用來儲存等外品的料倉。等外品不與其它產(chǎn)品作任何摻混,因為它不能被升級到目標產(chǎn)品或接近目標產(chǎn)品。PelletBlendingTransferSystem顆粒摻混傳送系統(tǒng)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.旋轉進料器(S-8015throughS-8019)控制摻混倉的出料。出料在重力作用下進入顆粒摻混傳送鼓風機(K-8040,K-8041,andK-8042)。顆粒摻混傳送系統(tǒng)經(jīng)過一個淘選系統(tǒng)將顆粒送至包裝系統(tǒng)。我們用這個淘選系統(tǒng)來去掉我們不想要的物質,

47H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度即生產(chǎn)過程中可能會出現(xiàn)的條狀聚合物和粉塵。這套系統(tǒng)包括一個淘選器(Y-8023),一個淘選器清洗扇(K-8030),以及一個淘選器粉塵收集器(Y-8027)。淘選器位于包裝倉的正上方。干凈的產(chǎn)品顆粒能夠靠重力,經(jīng)過淘選器出口的旋轉進料器(Y-8081)進入這些包裝倉(D-8024andD-8025)內。包裝倉以下的系統(tǒng)由專利受讓方設計。PurgeAirSystemforProductBlendingBins產(chǎn)品摻混倉的脫氣系統(tǒng)ApositivedisplacementBaggingBinPurgeBlower(K-8028andK-8029)isfurnishedtoprovideairtoallbinstoassurethatanyresidualhydrocarbonsdonotaccumulate.使用一臺正排量鼓風機將空氣吹入各個摻混倉,以確保不會有殘余的碳氫化合物累積。WashWaterSystem清洗水系統(tǒng)AWashWaterTank(C-8090)andaWashWaterPump(G-8091)makeupthewashwatersystemtosupplywashwatertoallbins.Thewashwatersystemshouldbedesignedtocleanthebinsand(whereapplicable)theindividualblendtubeswithinthebins.Hotairfordryingthebinscanbeprovidedbythepurgeairsystemwiththecoolingwatersupplyofthepurgeairblowerdischargeaircoolershutoff.

48H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度該系統(tǒng)包含一個清洗水罐(C-8090)和一臺清洗水泵(G-8091)的清洗水系統(tǒng)為各個倉提供清洗水。該系統(tǒng)是用來清洗各倉以及(如果適用的話)倉內的每個摻混管。用來烘干料倉的熱空氣可由空氣脫氣系統(tǒng)提供,但須先將空氣鼓風機出口處的空氣冷卻器的冷卻水源切斷。ControlSystem控制系統(tǒng)AprocesscontrolsystemisutilizedtomonitorandcontroltheUNIPOLPPprocess.Mostofthecontrolsystemisconventionalclosed-loopcontrolofvariablessuchasflow,temperature,andpressure.Someportionsofthecontrolsystemincorporateautomaticsequencing,suchasfortheremovalofproductfromthereactor.用一工藝控制系統(tǒng)來監(jiān)視、控制UNIPOL?聚丙烯工藝?？刂葡到y(tǒng)的大部分屬于傳統(tǒng)的對諸如流量,溫度,壓力的閉環(huán)控制。有些控制使用自動排序,例如將產(chǎn)品從反應器中轉移走的過程。Morespecializedcontrolsystemsincludeprocessanalyzersandnucleardetectors.On-lineprocessanalyzers,utilizinggaschromatographsandotherdetectorsystems,givecontinuousanalysesforthemonitoredstreams.Theseanalysesareusedtoassureproperpurityofrawmaterials,forclosed-loopcontrolofthereactioncyclegascomposition,andtoinsuresafeoperatingconditions.

49H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度更特殊一些的控制系統(tǒng)包含工藝分析儀和放射性監(jiān)測器。使用氣相色譜儀的在線工藝分析儀和其它檢測系統(tǒng)不斷地對需要監(jiān)視的物流進行分析。這些分析儀將保證原料的純度、反應循環(huán)氣組成的閉環(huán)控制、以及安全的操作條件。Nuclearinstrumentationisusedwhereotherconventionalmeasurementsystemshavebeenunsatisfactory,typicallyforsolidslevelmeasurements.Thesedevicesarecomposedofanuclearsourceanddetectors.放射性儀表用在傳統(tǒng)測量系統(tǒng)無法滿足要求的地方,一般是用在固體料位的測量上。這些裝置包括放射源和探測器。Amicroprocessor-basedDistributedControlSystem(DCS)isnormallyusedtoprovidetheoperatorinterfacewiththecontrolsystems.Theoperator'sstationhasvideodisplaysandkeyboardsforaccesstoalltheprocessdataonthedatahighwayfromthefield-mountedcomponents.Sequencecontrolandshutdowninterlocksareprovidedusingprogrammablelogiccontrollers(PLC’s).Inthecaseofsafetyinterlocks,dedicatedlogicsolversareprovidedforemergencyshutdownfeatures.Processgraphics,trendrecorders,alarmprinters,loggers,andannunciatorsareothernormalelementsofthesystem.

50H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度一般會有一個基于微處理器的分布式控制系統(tǒng)(DCS)來為操作人員提供她與控制系統(tǒng)之間的界面。操作站設有圖像顯示,并由鍵盤,能夠用來對從現(xiàn)場元件經(jīng)過數(shù)據(jù)高速公路傳來工藝數(shù)據(jù)進行操作?？删庉嫷倪壿嬁刂破?PLCs)可為系統(tǒng)提供序列控制和停車連鎖。至于安全連鎖,有專門的邏輯解碼器來提供緊急停車功能。其它象工藝圖,趨勢記錄器,警報打印機,記錄器,報訊器等也都是該系統(tǒng)的常見元素。AprocesscomputingsystemutilizingtheUNIPOLUNIPPAC?AdvancedProcessControlSystemgreatlyenhancestheoptimizationoftheUNIPOLPPunitbyperformingfunctionsthatarebeyondthecapabilitiesofthebasiccontrolsystemormanualcalculation.TheUNIPPACsystemisinterfacedtotheDCSforsupervisorycontrol,operatorguidance,anddatalogging.一套使用UNIPOLUNIPPAC?先進工藝控制軟件的工藝計算系統(tǒng),經(jīng)過它的一些超出基礎控制系統(tǒng)和人工計算能力范圍之外的功能,將大大加強UNIPOL?聚丙烯單元的優(yōu)化。工藝計算機與DCS就管理控制、操作員指南和數(shù)據(jù)記錄等方面進行互動。AfewexamplesoffunctionsprovidedbyUNIPOLUNIPPAC?ProcessControlSysteminclude:UNIPOLUNIPPAC?先進工藝控制軟件系統(tǒng)的功能的具體舉例:ResinPropertyPrediction樹脂性質預測

51H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度AimGrade/TransitionControl目標牌號/牌號切換控制ProductionRateCalculation產(chǎn)率計算DewPointTemperatureCalculation露點溫度計算FlowCompensationCalculation流量補償計算ProductionRateControl產(chǎn)率控制ProductionRateMaximization產(chǎn)率最大化SomeofthebenefitsoftheUNIPOLUNIPPACinclude:使用UNIPOLUNIPPAC?先進工藝控制的一些好處包括:Increasedproductionrate產(chǎn)率增加Increasedconsistencyofproductionrate產(chǎn)率穩(wěn)定性增加Fewerreactorupsetsfromanalyzerproblems;lessreactordowntime由于分析儀的問題而引起的反應器故障減少了;反應器總的停車時間減少Bettercontrolathigherproductionrates　在高產(chǎn)率下達到更優(yōu)良的控制Consistenttransitionswithinacatalystfamily在同一種催化劑內切換牌號時操作一致Increasedaim-gradeproduction目標牌號的產(chǎn)量增加Enhancedresinqualityandconsistency樹脂質量和均一性得到加強

52H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度ThespecificAdvancedProcessControlfunctionsinUNIPOLUNIPPACaredefinedintheUNIPOLFunctionalSpecificationsprovidedundertheContractwithLicensee.UNIPOLUNIPPAC?先進工藝控制軟件中的功能將與專利受讓方簽訂的合同中提供的UNIPOLUNIPPAC?先進工藝控制功能規(guī)格書中。SeeAppendix7fordetailsofthecontrolsystem.詳情見附件7中的控制系統(tǒng)。J.Utilities公用工程SteamandCondensate:ThePPProcessUnitrequiresMediumPressure(MP)andLowPressure(LP)steam.MPsteamisusedfortemporarilyheatingofcoolingwaterwheninitiallystartingupthereactor,andalsoforheatingtheextruder.LPsteamisusedmainlyforheatexchangers.MPandLPsteamareassumedtobesuperheatedatthebatterylimitsandaredesuperheatedusingcondensateinISBL.蒸汽和冷凝液:聚丙烯工藝單元要求使用中壓(MP)和低壓(LP)蒸汽。中壓蒸汽用于在反應器啟動時暫時加熱循環(huán)水路,并用于加熱擠出機。低壓蒸汽主要用在換熱器中。這里預計中壓和低壓蒸汽在合同工廠界區(qū)的邊界處是過熱的,且在界區(qū)內利用冷凝液來降低過熱蒸汽的熱量(即”除過熱”)。ThecondensatefromthevariousconsumersiscollectedinacondensatecollectionpotandpumpedtotheContractPlant

53H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度batterylimits.Partofthecondensateisusedtodesuperheatthevarioussteamlevels.從各個”用戶”處來的冷凝液都被收集在一個冷凝液收集罐內,再用泵打到合同工廠界區(qū)的邊界。部分冷凝液被用來”除過熱”不同等級的蒸汽。Other:Plantair,instrumentair,nitrogen,coolingwater,processwater,potablewaterandelectricalpowerwillbedeliveredtotheContractPlantbatterylimitsbytheLicensee.TheseutilitieswillthenbedistributedthroughouttheContractPlantfacilitiestothevariousprocessusers.MotorControlCenterandInstrumentairbackupsystemwillbeaddressedbytheEngineeringContractor.其它:工廠風、儀表風、氮氣、冷卻水、工藝用水,飲用水,電力等由專利受讓方送至合同工廠界區(qū)的邊界。然后,這些公用工程被分配給工廠內的各用戶使用。馬達控制中心和儀表風備風系統(tǒng)將由工程承包商設計?！.ProcessVent(Flare)HeaderSystem　工藝尾氣(火炬)總管系統(tǒng)HydrocarbondischargeswithintheContractPlantfrompressuresafetyvalves,occasionalroutinedepressurization

54H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度ofthereactor,emergencyreactorblowdown,andprocessventsarecollectedintheprocessventheader.在合同工廠中經(jīng)過壓力安全閥,反應器偶然的周期性卸壓,反應器緊急排放和工藝尾氣排放的碳氫化合物會收集在工藝尾氣總管?！.WasteWaterTreatment廢水處理TheUNIPOLPPprocessdoesnotproducewastewater,however,oilymaterialfromaroundrotatingequipment,suchasleaksorspills,whenflushedwithwatercouldbeasourceofcontaminatedoilywater.Spilledresinshouldalsobecollectedandremovedfromsurfacewaterbeforebeingdischargedtothecleansewersystem.UNIPOLTM聚丙烯工藝本身不產(chǎn)生廢水。但與旋轉設備有關的含油物料如泄漏后與水混合就成為含油廢水。泄漏的樹脂顆粒也應收集并與地表水分離,以免進入”清潔”的(即無顆粒的)的下水道系統(tǒng)。WatercontainingresincomingfromtheContactPlantprocessareaswillbecollectedbymeansofvarioussewercollectingheadersandconveyedtoaresinrecoverypit.Resinandwaterisseparatedthroughanunderflowweir.Resinwillbeperiodicallycollectedandremovedmanuallyfromthewatersurfacebyusinganet.CleanwaterissenttotheContractPlantbatterylimits.

55H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度夾帶著從工藝區(qū)帶過來的樹脂的水經(jīng)過許多下水管道被收集起來,送至樹脂回收池內。樹脂和水經(jīng)過一個底流壩分離開來。定期用人力將樹脂從水表面用網(wǎng)收集起來并移走。干凈的水被送到合同工廠的界區(qū)邊界。Watercontaminatedwithoilwillbecollectedseparatelyintoanoilskimmingpitandtheoilwillbeperiodicallyremovedbyamanually-operatedoilskimmeranddischargedtotheContractPlantbatterylimits.被油污染了的水會被收集到另一個脫油池,再使用一個人工操作的撇油器定期將油收集起來,送至界區(qū)邊界。RainwaterflowstoperimeterdrenchesaroundtheContractPlantandisdrainedoutsidethebatterylimits.雨水先流到合同工廠周圍的地溝里,再流入界區(qū)外。M.TracingSystem設備管道加熱保溫TracingandinsulationdesignguidelinesareprovidedinthePDP.設備管道加熱保溫的設計準則見工藝設計包N.FireProtectionSystem消防系統(tǒng)Thefollowingfirefightingfacilitiesshouldbeconsideredforthisplant.DuringtheBasicandDetailedDesign,theEngineeringContractormustinvestigatethesetypeoffirefightingpossibilitiesandbasedthefirefighting

56H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度requirementsonthehazardspresentontheplot,thepossiblehazardsadjacenttotheplot,theLicensee’sspecifications&standardsandthelocalauthorityregulationsandstandards.下列消防設施是該工廠應予以考慮的。在設計階段,設計商必須根據(jù)該工廠內外的具體潛在危險,專利受讓方的具體標準和當?shù)氐南婪ㄒ?guī)來評估應用這些消防措施的可能性。Firewater(underground)distributionssystem,withafeedfrom2differentlocations.(flowfromtwosides)地下消防水分配系統(tǒng),要求有兩個水源。FireWaterDelugesystems大水量滅火系統(tǒng)FWhydrantsandFWmonitors,strategicallylocatedaroundandintheplot消防水龍頭和消防水監(jiān)視,合理地分布在廠區(qū)內。WetorDryrisersinbuildingsandhighstructures用于建筑物和高架機構的干濕消防升降裝置Indoorautomaticsprinklersystems室內自動噴水系統(tǒng)Portable&wheeledfireextinguishers手提式和輪式滅火器FireProofingonloadbearingstructures,PiperacksandEquipmentsupports承重機構,管路和設備的防火FireandGasdetectionsystemsandvisible&audiblealarmingsystems火警和可燃氣檢測系統(tǒng),及聲光報警系統(tǒng)

57H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度Indoorsmokedetectionandgasextinguishingsystems室內煙氣報警器和氣體滅火器AfireprotectiondesignphilosophystatementwillbeprovidedinthePDP.工藝設計包PDP中還將提供防火設計的指導思路O.AlarmSystem警報系統(tǒng)TheGasDetectionSystem(GDS)providesgasdetectionfunctionalitybymonitoringforhazardoushydrocarbonconcentrationsinbuildingsoraroundprocessequipment.Insomeinstancesitmayalsomonitorforoxygendeficientenvironments.TheFireDetectionSystem(FDS)providesfiredetectionfunctionalitybymonitoringforbothsmokeandfire.TheGDSandFDSmayautomaticallydrivefiresuppressionequipmentsuchassprinklersystems.TheGDSandFDSwillinterfacewithunitpersonnelintheprocessareausinglocallyinstalledhorns,sirens,orbeaconsnearthedetectionsite.BuildingsnotinprocessareasmayhaveconventionalfirealarmsystemsbutshouldalsotransmitalarmsignalstotheFDS.SeeAppendix7.2.5.氣體檢測器(GDS)在建筑物和設備周圍檢測可燃碳氫化合物的濃度。在某些場合還可檢測氧氣的濃度是否不足。火警檢測器(FDS

58H:\精品資料\建筑精品網(wǎng)原稿ok（刪除公文）\建筑精品網(wǎng)5未上傳百度)可檢測煙和火焰。氣體檢測器和火警檢測器還可自動啟動滅火系統(tǒng)比如噴水裝置。氣體檢測器和火警檢測器經(jīng)過在檢測器附件安裝的喇叭,汽笛和燈標警示廠內人員。不在工藝區(qū)域內的建筑物可采用普通的火警系統(tǒng),但應將警報信號傳送至火警檢測器FDS。具體見附件7.2.5.