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1、ProcessTechnologyChapter13UtilitySystemsZhengdongWang(王正东)Room333,Bldg.17,Tel.:64253513zdwang@ecust.edu.cn1UtilitySystemsaroundYouPowersupplysystem(electricity)Tapwatersystem(runningwater)GassupplysystemTelephonelineInternetconnectionsystem(ISP,ADSL)C
2、ableTVsystemGlobalpositioningsystem(GPS)Utilitiesbillingsystem2Objectives–todescribeBasiccomponentsofasteamsystemarawwatersystemafirewatersystemacoolingwatersystemanairsystemanitrogensystemagassystemanelectricalsystemanindustrialsewersystemaprocessref
3、rigerationsystemareliefandflaresystem3UtilityBoiler(Wujing)4Coalfiredboiler(Waigaoqiao)5ProvancePowerPlant6IntroductiontoProcessSystemsChemicalplantsandrefineriesincludeuniquecombinationsofequipmentandsystemsthatareusedtoseparatematerialsintopureorrel
4、ativelypureproducts.Examplesofprocesssystemsincludereactions,distillation,absorbing/stripping,adsorption/drying,crystallization,evaporation,extrusion,extraction,filtering,screening,andutilitysystems.Plantutilitysystemstypicallyinclude,steamgeneration,
5、compressedairandgases,watertreatment,andcoolingtoweroperations.7SteamGenerationSystemsBoiler(firetubeorwatertube)Steamheadersystem(low,mediumandhighpressure)Condensatereturnsystem(steamtraps,valves,piping,pumps)DeaeratorsystemSteamsystemscanincludesup
6、erhighpressure(SHP)steamgenerationanddistribution,highpressure(HP)steam,mediumpressure(MP)steamandlowpressure(LP)steam8SteamGenerationSystemsSuperHighPressure(1000-1200psig)HighPressureSteamSystem(400-800psig)MediumPressureSteamSystem(180to200psig)Low
7、PressureSteam(50-60psig)*1psi=6895Pa=0.006895MPa=0.06895bar；1bar=14.50psi9CondensateRecoverySystemThecondensaterecoverysystemisseparatedintocleanandsuspect(dirty)condensatesections.Cleancondensateisroutedtothedeaerator.Suspectcondensateiscollectedfrom
8、steamuserswheretheprocesssidepressureishigherthanthesteampressure.10RawWaterandFireWaterSystemThenormalplantsupplyfortherawwater(RW;usedforallpurposesthroughouttheplant)andfirewater(FW;usedonlyinspecificunitssuchasboilers,andusuallymustbetreat
