Vacuum science... product solution.

Reactor vacuum duty

Chemical reactions are widely used in the synthesis of new compounds in the chemical, petrochemical, fragrance and pharmaceutical industries. Many processes require vacuum to avoid high temperatures, remove oxygen and reaction products, or shift the equilibrium in gas phase reactions.

• Simplyreliableeveninharshenvironments,withexcellentliquidandsolidshandling

• Easytoinstall,simpletooperate,quietrunning,minimummaintenance

• Consistentrepeatableperformance,unaffectedbysealwatertemperature

• Noeffluent–contaminatedwater/oilgeneratedby‘wet’vacuumsystemsiseliminated

• Processintegrity–noriskofoilorwaterinthesweptvolume

Thepressureunderwhichreactionsareconductedvariesbetween50and10-1mbar,butisusually10-20mbar.Reactorstypicallyhavecapacitiesof2m3orbelow,requiringvacuumpumpingspeedsofaround100-200m3/h.Capacitiescanbeextended,usinglargerbackingpumpsoroneormoremechanicalorvapourboosterstages,tomanythousandsofm3/h.

Historically,‘wet’vacuumtechnologieshavedominatedthissectorbutattitudesanddecision-makingprocessesarechanging,largelybecauseofthetrendtowardstighterenvironmentalregulation.

Withgreenissuesnowattheforefront,vacuumtechnologymustnotonlyenabletheprocess,itmustalsoreduceenergyusage,copewithprocessupsets,maximiseuptime,minimiseutilitiesconsumptionandabateanyeffluentorprocessby-products.Dryvacuumpumptechnologyticksallthoseboxes.

EdwardsCXSpumpstakethetechnologytoanewlevel.Ideallysuitedtoeventheharshestchemicalprocesses,theydeliveroptimumperformancewithlowerrunningcostsandminimalenvironmentalimpact.Inbrief,they’resimplyreliable.

CXS benefits

• Safetyassured–ATEXcertifiedforuseinhazardousenvironments

• Explosion-proof,ensuringsafepumpingofflammablegases

• Pumpscorrosivevapourswithoutcorroding

• Lowcostofownership,withlowenergyusageandutilitycosts

CXS chemical dry vacuum pump

application note

Pressure Control with a CXS and Pressure Transmitter (PT)

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 1

CXSModuleoptions:Module1: CXSPumpwithPurges,InletandOutletFlameArresters,

InletValve,Inverter,Controller&SafetyInterlocksModule2: SolventFlushPackageModule3: InletValveBy-passLineModule4: InletKOPwithLevelControlModule5: InletReceiverwithAuto-drainModule6: EHMechanicalBoosterModule7: InletCondenserModule8: ExhaustCondenser&Receiver

AdditionalModuleOptions:• ExhaustSilencer• ParticleFilter• PressureControlValve• OtherControlOptions• LocalControlPanel• AdditionalMechanicalBoosters• DocumentationPackages• SystemSkid

Module 2

Module 4 Module 5

Module 3

Module 6

Module 7

Module 8

Processes

CXSpumpsshouldbeconsideredforreactordutieswhenyouwant:

• Thelowestcostofownership• Increasedreactionspeed• Reactantsorproductsremovedfromthesystem• Lowproducttemperaturestopreventdegradation

andimproveproductviability• Lowfinalpressures• Extremelylowlevelsofresidualliquids• Noriskofoxidationorexplosion• Recoveryoftoxicconstituents,valuablesolvents

orfragrances• Handlingoftrickymaterials,especiallyparticulates,

stickysubstancesandprocessupsets• Goodpressurecontrolsduringthedryingcycle• Fastrecoveryofequipmentcost• Clean,reliable,safevacuum

Markets

• Pharmaceuticalsmanufacturers• Finechemicalsindustry• Generalchemicalandpetrochemicalindustries• Fragrancemanufacturers• Paintandgluemanufacturers• Resinandplasticindustries

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:P41100310,IssueA©EdwardsLimited2013.Allrightsreserved.

EdwardsandtheEdwardslogoaretrademarksofEdwardsLimited.

• CXSchemicaldrypumpsfeaturecutting-edgetaperedscrewtechnology.Smooth,gradualcompressionalongthelengthoftherotorresultsinimprovedthermalcontrolandoptimisedperformanceatallinletpressures.

• Anadvancedtemperaturemanagementsystemmaintainsthepumptemperatureatprogrammablelevelsforoptimal,repeatableprocessperformance.

• Theinnovativedesignusesfloodedair-gappotted,highefficiencymotors.Integraldriveandcontrolsystemsfurtherhelptolowerthecostofownership.

• Quietrunning–noiselevelstypicallyaslowas64dB(A).

• CXSchemicaldrypumpsaredesignedtobegoodathandlingsolidsandeasytorestart.Theycanhandleatleastonelitreofliquidperminutecontinuouslyandslugsofupto25litreswithoutstopping.

• Anintegralcontroller,PIDpressurecontrolandsafetysystemsallowfor‘plugandpump’operation.PumpscanbelinkedtoanyexternalcontrolsystemviaavarietyofinterfacesincludingEthernetandProfibusDP.

• CXSchemicaldrypumpshavealongserviceintervalofuptofiveyearsandrequireminimalmaintenanceovertheirlifeexpectancyofmorethan25years.

Reactor applications

• Synthesisofnewchemicalandpetrochemicalcompounds

• Polymerisationoffattyacids

• Pyrolysisoffragrances

• Hydrocarbonandchemicalcracking

• Liquid/solidreactionoffinechemicalsintointermediates

• Organo-metallicreactionandprocesses

• Combustion,neutralisationandadsorptionreactions