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INTRODUCTIONTOGASREMOVALSYSTEMSANDLIQUIDRINGVACUUMPUMPSHenryG.VeizadesVeizades&Associates,Inc.,OneHalladiePlaza,Suite838,SanFrancisco,California94102,U.S.A.ABSTRACTNexttoejectors,Liquid-RingVacuumPumps(LRVP)arethemostusedvacuum-producingdevicesinindustry.IntegrationofLiquid-RingVacuumPumpswithSteamJetEjectors,commonlyreferredtoasahybridsystem,isoneofthemoreefficientmethodsofproducingprocessvacuum.TheLRVPisaspecificformofrotarypositive-displacementpumputilizingliquidastheprincipalelementingascompression.Thecompressionisperformedbyaringofliquidformedasaresultoftherelativeeccentricitybetweenthepump’scasingandarotatingmulti-bladedimpeller.Theeccentricityresultsinnearcompletefillingthenpartialemptyingofeachrotorchamberduringeveryrevolution.Thefiling-and-emptyingactioncreatesapistonactionwithineachsetofrotorofimpellerblades.Thepump’scomponentsarepositionedinsuchamannerastoadmitgaswhentherotorchamberisemptyingtheliquid,andthentoallowthegastodischargeoncecompressioniscompleted.Sealingareasbetweentheinletanddischargeportsareprovided,toclosetherotorareas,andtoseparatetheinletanddischargeflows.KeyWords:Gasremoval,NCG,non-condensable,liquidringvacuumpump,ejector,condenser1.APPLICATIONSmustbeorientedsuchthatcondensatewillnotaccumulateinthejackets.Liquid-RingVacuumPumpsareusedintherefiningindustryforcrudeoilvacuumdistillation,evaporation,filtering,andAnotheradvantageofhybridsystemsispackaging.Generally,drying,andinthepowerindustrytoevacuatesteamsurfacecomponentsareskid-mountedsuchthatthepackageisacondensers.Otherindustriesthatrelyextensivelyonvacuumcompletesystemthatincludesvalves,interconnectingpiping,pumpsarefood,chemicals,pharmaceuticals,hospitals,andpulpinstrumentation,andutilityconnections.Thepackageorskidisandpaper.designedtoallowforthetransferoftheforcesandmomentstothefoundationsupportswithoutmisalignmentofthepackaged2.LIQUID-RINGVACUUMPUMPSBENEFITScomponents.•Reliable,simpledesignwhichinvolvesonlyonerotatingHowever,beforemakinganydeci
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