MARKETS & APPLICATIONS

Elliott Compression Solutions for LNG

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Over the years, Elliott has contributed to many industry-leading innovations in LNG service:� Theworld’sfirstbase-loadLNGplantrefrigerationcompressors.

� Theworld’sfirstgasturbine-drivencompressorsinanLNGplant.

� Theworld’sfirstmixedrefrigerantprocessLNGplant.

� Theworld’sfirstuseofalargeframe,horizontallysplit,centrifugalcompressorinpropanerefrigerationservice.

� Theworld’sfirstuseofvariablefrequencysynchronousmotorstartersforlargeframegasturbinesdrivingmainrefrigerationcompressors.

� Theworld’sfirstdualmixedrefrigerantcompressorservice.

� Apatentedadjustableinletguidevane(AIGV)systemtoefficientlycontrolinletflowandpressureinboiloffgas(BOG)applications.

■ A Pioneer in LnG refriGerAtion ComPression

Fromthebeginningofthecommercialmarketforliquifiednaturalgas(LNG)in1964,ElliottGrouphasbeenapremiersupplierofrefrigerationcompressorsforbaseloadLNGplants.OurheritageinrefrigerationcompressortechnologyevolvedfromourassociationwithCarrierCorporationbeginninginthe1950s.Today,ElliottisakeypartnerforsomeofthelargestLNGprojectsthroughouttheworld.

Elliott’srefrigerationexperienceincludesover100compressorcasinginstallationsinbase-loadLNGplantsaroundtheworld.Thesecompressorscontributeover70milliontonsperannum(MTPA)ofLNGcapacity.Elliott’slistofinstalledcompressorstotalsover3,200,000hp(2,390MW)andcontinuestogrow.Throughitsengineeringexperienceandhighlyreliableequipmentdesigns,Elliottenjoysawell-deservedreputationasaleadingsuppliertotheLNGindustry.

OurLNGcompressionsolutionsinclude:� Boiloffgas(BOG)�Mixedrefrigerant� Dualrefrigerant� Endflashgas� Propanerefrigeration� Booster

Refrigeration Process

Plant Fuel Supply

LNG Storage

Send Out PumpsStorage Pump

LiquefactionPre-Cooling Sub-Cooling

Heat Exchanger

Sepa

rato

r

Heat ExchangerHeat Exchanger

Clean/Treated Gas

Flash GasCompressor

Boil Off Gas (BOG) Compressor

Vapor Return from Ship

To Distribution

To Ship

Gas

Refrigeration

Liquid

■ eLLiott in LnG

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■ exPerienCe with LArGe frAme ComPressors

■ exPerienCe in worLd-sCALe LnG system inteGrAtion

LNGcustomerscandrawupontheprovensystemintegrationexperienceofElliott’sprojectmanagers,projectengineers,designengineers,andfieldserviceengineers.OurLNGprojectexperienceincludestheintegrationofcompressors,motors,andlargeframegasturbineswithplantDCSplatforms,andfireandgasdetectionsystems.

Elliottcoordinatessupplylogisticsamongmajorsupplierssuchasthegasturbineandvariablefrequencydrivemanufacturers.Bycarefullymanagingdeliveryandstart-upschedules,Elliottprojectmanagershelptoreducecommissioningtime.Elliott’salliancewithTri-SenSystemssimplifiestheselectionandcoordinationofmultiplecontrolsystemsinLNGfacilities.Tri-Sen’sTSxcompressorcontrolsfeatureconfigurableredundancy,advanceddiagnosticcapabilities,abuilt-inhumanmachineinterface,andrealtimeandhistoricaltrending.

Elliotthasover50yearsofprovenexperienceinlargeframecompressorapplications,includingpropaneandmixedrefrigerationservicesforLNG,propane/propyleneservicesforpetrochemicalapplications,andmanyothergasprocessingapplications.Elliott’sreliable,largeframecompressorsareengineeredtomeetthedemandingtemperatureextremesencounteredinLNGrefrigerationapplications.Thesecompressorsareavailableinbothhorizontallyandverticallysplitdesigns.

Elliott’slargesthorizontallysplitcompressordesignsarecapableofupto320,000icfm(544,000m3/h)withcasingratingsofupto400psig(27.6barg).

Elliott’sverticallysplitbarrelcompressorsaredesignedformaximumflowsof154,000icfm(261,650m3/h).ElliotthasinstallationsinRussiafordualmixedrefrigerant,high-pressureapplicationsratedover600psig(41.4barg).

88MB6-5 LNG mixed refrigerant compressor

110M6 compressor casing

60MB6I LNG mixed refrigerant compressor

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■ ComPressor seLeCtion

■ AdvAnCed desiGn tooLs

Elliottemploysthelatestengineeringdesigntechnologies,includingcomputationalfluiddynamic(CFD)analysis,finiteelementanalysis(FEA),andsolidsmodeling.

CFDandFEAprovideafull3-dimensionalanalysisofboththeaerodynamicflowpathandthestructuralmechanicsofcompressordesigns.State-of-the-artrotordynamics,compressorperformanceanddynamicsimulationprogramsareusedfordevelopingcompressorselections.Thesetoolsoptimizeawiderangeofcompressorconfigurationsincludingthosewithside-stream,doubleflow,back-to-back,andinter-cooleddesigns.

Elliott’sproprietarycompressorselectionprogramisusedinallcompressorperformancesimulations.Theprogramincorporatesdatafromsingle-stagedesignverificationtestsandactualfactoryperformancetests.Thispowerfultoolaccuratelymodelsandpredictsstageperformanceincludinginductionandextractionside-streams.

PerformanceenhancementsincludehigheraerodynamicefficienciesandlongerperformancelifetohandlethedemandingLNGserviceapplications.Elliott’spatentedAIGVdesignenablesawideperformancerangeforfixed-speedcompressors.

Elliott’slongtermrelationshipswithmajorLNGprocessdesignersareinvaluableformatchingtheprocesstothecompressorperformancecharacteristicsandoptimizingplantoutput.

Impeller inspection for a 103M3 high flow compressor

Modeling an 88MB5 compressor

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■ suPPortinG ProduCtion requirements

■ edsCAn – AnALytiCAL simuLAtion

InLNGservice,themostextremeprocessdemandsareinthepropanerefrigerationapplications.Theseapplicationsinvolvehighmolecular weights combined with lowtemperaturesandvariationsinvolumetricflowrequirements.Largevolume side-streams are common in the liquefactionprocess.

Elliott’sexperienceinthedesignofcompressorsforthesechallengingconditionsensuresanaccuratefluiddynamicdesignwithhighperformance,abroadoperatingrange,andreliablemechanicalcharacteristics.Modelingconfirmstheproperdesignofthemergingflowstreamsatsimilarvelocitylevelsforminimumpressurelossandmaximumefficiency.� Design scalability ensures performanceacrosstherangeofallpossibleapplications.

� Expertiseinmetallurgy,weldrepair,andspecialtycoatingsensuresperformanceinextremedutyapplications.

Elliott’sproprietaryEDSCANsimulationprogramisusedtoconfirmthesizingofthestarterorhelpermotorforacompressor/gasturbinetrainbyanalyzingthecompressorstringperformanceundervariouscustomerandfactoryprocessconditions.Elliotthassimulatedavarietyofoperatingconditions, including: � Start-up� Controlled & emergency shutdowns� Anti-surgevalveselectionconfirmation� Alternategasoperationssuchasnitrogenpurgeanddefrostingoperations

� Processupsetconditions� Simulationofsitestart-upconditionsforfactory

testing

SimulationsfullymodeltheperformanceoftheLNGtrain,whichenablesElliotttopredictthestart-upandrunningperformanceofthecompressor,motor,andgasturbineundersiteconditions.

88M4 & 60M4 mixed refrigerant compressors

Side-load and mainstream compressor flow

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■ mAnufACturinG CAPAbiLities

Elliottmanufacturessomeofthelargestcentrifugalcompressorsintheindustry.Theselargeframetechnologiesaredirectlyapplicabletotheproductionrequirementsoflarge-scaleLNGplants.Themaximuminletflowsfortheselargecompressorsareupto320,000icfm(544,000m3/h)inasingleflowconfiguration.

InElliott’smanufacturingfacilities,largeandpowerfulweldmentpositionersallowcontinuousweldingofcompressorcasingsbymovingthemountedcasingaroundthewelder.

TheMastercenterMillTurningMachinewasthefirstofitskindtobeinstalledintheUnitedStatesandisusedtomanufacturediaphragmsandsealhousings.

TheMasterheadMillingCenterisapowerfulmachinewhichislikeafactorywithinafactory.Thismachine’s5-axiscapabilitiesallowlayout,milling,drilling,boring,andinspectionoperations.

Thesemachiningcenters,alongwithSixSigmaandLeanManufacturingprinciples,enableElliotttoreducecycletimesforlargecompressors.

Full load LNG gas turbine/compressor test set-up

103M3 compressor casing on the masterhead

103M impeller on a 5-axis weldment positioner

■ testinG CAPAbiLities

FewcompressormanufacturershavecapabilitiesthatmatchtheextentandversatilityofElliott’stestingfacilities.� TestingtoAPI617andASMEPowerTestCode(PTC-10)requirements.

� Apermanentgasturbinetestpadincorporatingallrequiredutilitiesandnecessaryauxiliaryequipment.

� Full-loadstringtestingcapabilitieswithagasturbinedriverover100,000hp(74.6MW).

� Apermanentmotortestpadforfull-loadstringtestingover16,000hp(12MW).

�Fullvariablefrequencydrive(VFD)capabilitiesincludingcompressordriveandgasturbinestart-up.

� Customer-specifictestingcapabilitiesforLNGprocessapplications.

� GlobaltestingavailabilitywithcomprehensivetestingfacilitiesintheUnitedStatesandJapan.

Elliottmaintainsastate-of-the-artmetallurgyandmaterialsengineeringlabwithadedicatedteamofexpertsfocusedonoptimizingtheperformanceofElliottrotatingequipmentincaustic,corrosive,andextremetemperatureconditions.

Elliott’sfacilitieshaveearnedISO9001certificationbyadheringtostrictqualityassurancepracticesthroughoutthedesign,manufacture,andtestingofElliottrotatingequipmentandauxiliaryunits.

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■ eLLiott’s GLobAL serviCes

Service Parts Organization

Elliott’sISO9001certifiedServicePartsorganizationworkswithcustomerstoensureoptimalperformanceandreliabilityofallElliottequipment.ServicePartsengineersarequalifiedtoaddressthevaryingneedsofeachcustomer,includingpartsidentification,upgraderecommendations,andcustomizedpartskitsdesign.

Elliott’sServicePartsorganizationhasextensivemachiningcentersandfinishedpartsinventoriesthatallowquickmanufacturingandshipmentofparts.Emergencycustomersupportisofferedsevendaysaweekandsamedayshipmentisavailableonmostin-stockitems.

Elliott’sserviceshopsarestrategicallylocatedworldwidetoserviceandrepairElliottandnon-Elliottturbomachinery.Theserviceshopshaveextensiveexperiencerangingfrominspectionsandoverhaulstospecialtymachiningandweldrepair.

CustomertrainingclassesforoperationsandmaintenancepersonnelareofferedseveraltimesayearatElliott’sU.S.headquarters.ArrangementsmayalsobemadeforcustomizedtrainingatcustomersitesoratanyElliottfacilityorservicecenter.

Field Support

Retrofittingandreratingcompressorsinthefieldcanachievecapacityincreases,de-bottleneckingandprocessoptimization.Elliottoffersacomprehensiverangeofsupportservicesforalltypesofturbomachineryfromanymanufacturer.Elliott’sglobalservicenetworkprovidesexperiencedon-siteprojectmanagement,supervisionandskilledlabortoperforminstallation,commissioning,andstart-upactivities.Elliottoffersmaintenanceprogramsthatrangefrompreventative,routine,andemergencyservices,tolong-termserviceagreements.

88M4 low-pressure mixed refrigerant pressure compressor casing

88M6I LP/MP mixed refrigerant compressor

©2014ElliottGroup MKT.5002.0514

901 North Fourth StreetJeannette, PA 15644-1473Telephone: 724-527-2811Fax: 724-600-8442Email: info@elliott-turbo.com

www.elliott-turbo.com

Elliott Group is a global leader in the design, manufacture and service of technically advanced centrifugal com-pressors, steam turbines, power recov-er expanders and axial compressors used in the petrochemical, refining, oil & gas and process industries, as well as in power applications. Elliott Group is a wholly owned subsidiary of Ebara Cor-poration, a major industrial conglomer-ate headquartered in Tokyo, Japan.