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Vacuum science... product solution.
Vacuum drying
Vacuum drying uses pressure reduction to remove moisture or solvents from a substance. Reducing the pressure lowers the boiling point of liquids, allowing the removal of vapours at reduced temperatures.
• Nofussͳ Easytoinstallandcontrol,quietrunning,minimummaintenance
ͳ Just“fitandforget”
• Simplyreliableͳ Evenindifficultanddemandingenvironments,withexcellentliquidandsolidshandling
• Lowcostofownershipͳ Lowenergyusageandutilitycosts
• Robustͳ Pumpscorrosivevapourswithoutcorroding
• Environmentallyfriendlyͳ Nocontaminationoftheprocessstreamorcoolingwater
ͳ Noeffluentgeneration
Dryingisusuallyatime-consumingprocess,sooptimisedsolutionsprovideconsiderablesavingsintime,energyandcosts.Vacuumimprovesthedryingratesignificantlyforverydenseproductsandishighlyeffectiveintherecoveryoftoxicconstituents,valuablesolventsorfragrances.Itisessentialforproducingthelowtemperaturesrequiredtopreventdegradationandimproveproductqualityandviability.
Asexpertsinvacuumtechnology,Edwardshasafullunderstandingofdryingprocessesandtheimportancenotonlyofpumpsizingandselectionforeffectivesolidsandliquidhandlingbutalsothechallengespresentedbycorrosive,flammable,explosiveandpoisonouschemicals.
EdwardsCXSpumpsareideallysuitedtovacuumdryingprocessesinthefinechemicals,foodandpharmaceuticalindustries.Theyalsooffersignificantadvantagesinprocessesusedinplastics,ceramics,dyes,paintandpigments.Theyareavailableasstandaloneunitsorascompletesystemsincombinationwithboosterpumpsandaccessoriessuchasflamearrestors,knockoutpots,condensersandfilters.
CXS benefits
• Safetyassuredͳ ATEXcertifiedforuseinhazardousenvironments
ͳ Explosion-proofͳ Safepumpingofflammablegases
• Outstandingsupportͳ Fromaglobalcompanyfamedforitsbest-in-classtechnologyandapplicationsexpertise
CXS chemical dry vacuum pump
application note
Pressure Control with a CXS and Pressure Transmitter (PT)
Module 1
Communication hardware options:- MCM MicroTim- Ethernet- Profibus DP- RS232
Reactants + Product
Distillation or Evaporation
CXS VACUUM
CXSPUMP
SYSTEM
PT
Any process vessel, e.g., a reactor
condenser with receiverFeed
No expensive control valve
Inlet valve
Optional DCS,Local Control Panel
or Computer
Module 2
Module 4 Module 5
CXSmoduleoptions:
Module1: CXSpumpwithpurges,inletandoutletflamearresters,inletvalve,inverter,controller&safetyinterlocks
Module2: SolventflushpackageModule3: Inletvalveby-passlineModule4: InletKOPwithlevelcontrolModule5: Inletreceiverwithauto-drainModule6: EHmechanicalboosterModule7: Exhaustcondenser&receiverModule8: Inletcondenser
Additionalmoduleoptions:
• Exhaustsilencer• Dustfilter• Pressurecontrolvalve• Othercontroloptions• Localcontrolpanel• Additionalmechanicalboosters• Documentationpackages• Systemskid
Module 3
Module 6
Module 7
Dryingapplications
• Finechemicals• Specialitychemicals• Pharmaceuticalsandtheirintermediates• Agrochemicals• Plastics• Paints,dyesandpigments• Explosives
WhentouseCXS
CXSpumpsshouldbeconsideredforvacuumdryingwhen:• Minimisingdryingtimes• Lowproducttemperaturesarerequiredtopreventdegradation
andimproveproductqualityandviability• Lowfinalpressuresaredesirable• Anendproductrequiresextremelylowlevelsofresidualliquids• Aheatedproductincontactwithaircausesoxidationorriskof
explosion• Recoveryoftoxicconstituents,valuablesolventsorfragrances
isrequired• Handlingtrickymaterials,especiallyparticulates,sticky
substancesandprocessupsets• Goodpressurecontrolsarerequiredduringthedryingcycle• Fastrecoveryofequipmentcostisrequired• Clean,reliable,safevacuumisrequired
Module 8
Global contacts
info@edwardsvacuum.com
EUROPEUK Crawley+441293528844UK (local rate)08459212223BelgiumBrussels+3223000730FranceParis+33141211256GermanyMunich08000001456ItalyMilan+3902484471
USANiagara (toll free)+18008489800BRAZILSao Paulo+551139525000ISRAELQiryat-Gat+97286810633
ASIA PACIFICChina (toll free)+864001119618India,Pune+912040752222Japan,Yachiyo+81474588831Korea,Bundang+82317167070Singapore+6565468408Taiwan R.O.C.JhunanTown+88637581000
info@edwardsvacuum.com
CXS features
PublicationNumber:P41100250,IssueB©EdwardsLimited2013.Allrightsreserved.
EdwardsandtheEdwardslogoaretrademarksofEdwardsLimited.
• CXSchemicaldrypumpsfeaturecutting-edgetaperedscrewtechnology.Smooth,gradualcompressionalongthelengthoftherotorresultsinimprovedthermalcontrolandoptimisedperformanceatallinletpressures
• Anadvancedtemperaturemanagementsystemmaintainsthepumptemperatureatprogrammablelevelsforoptimal,repeatableprocessperformance
• Theinnovativedesignusesfloodedair-gappotted,highefficiencymotors.Integraldriveandcontrolsystemsfurtherhelptolowerthecostofownership
• Quietrunning,withnoiselevelstypicallyaslowas64dB(A)
• CXSchemicaldrypumpsaredesignedtobegoodathandlingsolidsandeasytorestart.Theycanhandleatleastonelitreofliquidperminutecontinuouslyandslugsofupto25litreswithoutstopping
• Anintegralcontroller,PIDpressurecontrolandsafetysystemsallowfor‘plugandpump’operation.PumpscanbelinkedtoanyexternalcontrolsystemviaavarietyofinterfacesincludingEthernetandProfibusDP
• CXSchemicaldrypumpshavealongserviceintervalofuptofiveyearsandrequireminimalmaintenanceovertheirlifeexpectancyofmorethan25years
• Noroutineservicerequired
Systemisation
Systemisationisanimportantconsiderationforsuccessfulvacuumpumpingondryingapplications.WithCXSchemicaldrypumps,systemisationismadeeasy.Usinganextensiverangeofpre-engineeredmodules,theCXSrangeoffersthecapabilitytomatchmostcustomerapplicationneeds.
CXSpumpsareavailableasstand-alonepumpsoraspartofacompletesystem,includingmechanicalboostersforhigherpumpingcapacities.Theycanalsobeenhancedwitharangeofotherstandardaccessoriessuchasvalves,flamearresters,solventflushkits,condensers,knock-outpotsanddustfilters.
Twomodelsareavailableinitially,theCXS160andCXS250,whichgivenominalcapacitiesof160m3h-1and250m3h-1respectively.
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