Elliott Compressors for World-Scale LNG Plants

Proven Turbomachinery Technology

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Over the years, Elliott contributed to many industry-leading innovations in LNG service:

Theworld’sfirstbase-loadLNGplantrefrigeration�compressors

Theworld’sfirstgasturbine-drivencompressors�inanLNGplant

Theworld’sfirstmixedrefrigerantprocessLNG�plant

Theworld’sfirstuseofalargeframe,horizontally�split,centrifugalcompressorinpropanerefrigera-tion service

Theworld’sfirstLNGapplicationofmainrefrig-�erationcompressorsdrivenby2-shaftframegasturbines

Theworld’sfirstLNGplantsolelyusinglarge�framegasturbinesformainrefrigerationcompres-sor trains

Theworld’sfirstuseofvariablefrequency�synchronousmotorstartersforlargeframegasturbinesdrivingmainrefrigerationcompressors

Theworld’sfirstdualmixedrefrigerantcompres-�sor service

A Pioneer in LNG Refrigeration Compression

ElliotthasbeenapremiersupplierofrefrigerationcompressorsforbaseloadLNGplantssincethebeginningofacommercialmarketforliquefiednaturalgasin1964.Elliott’sheritageinrefrigerationcom-pressortechnologyevolvedfromitsassociationwithCarrierCorporationbeginninginthe1950’s.Today,ElliottisakeypartnerforsomeofthelargestLNGprojectsthroughouttheworld.

Elliott’srefrigerationexperienceincludesover100compressorcasinginstallationsinbase-loadLNGplantsaroundtheworld.Thesecompressorscontrib-uteover70milliontonsperannum(MTPA)ofLNGcapacity.Elliott’slistofinstalledcompressorstotalsover3,200,000hp(2,390MW)andcontinuestogrow.Throughitsengineeringexperienceandhighlyreliableequipmentdesigns,Elliottenjoysawell-deservedreputationasaleadingsuppliertotheLNGindustry.

Photo provided by the Center for Liquefied Natural Gas

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Experience with Large Frame Compressors

Experience in World-Scale LNG System Integration

LNGcustomerscandrawupontheprovensystemintegrationexperienceofElliott’sprojectmanagers,projectengineers,designengineersandfieldserviceengineers.OurLNGprojectexperienceincludestheintegrationofcompressors,motorsandlargeframegasturbineswithplantDCSplatforms,andfireandgas detection systems.

Elliottcoordinatessupplylogisticsamongmajorsup-plierssuchasthegasturbineandvariablefrequencydrivemanufacturers.Bycarefullymanagingdeliveryandstart-upschedules,Elliottprojectmanagershelpto reduce commissioning time. Elliott’s long-term relationshipswithcontrolsystemsupplierssimplifythecoordinationofmultiplecontrolsystemsinLNGfacilities.

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

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

Elliott’sverticallysplitbarrelcompressorsaredesignedformaximumflowsof154,000icfm(261,650m3/h).ElliotthasinstallationsinRussiafordualmixedrefrigeration,highpressureapplicationsratedover600psig(41.4barg).

88MB6-5 LNG MR compressor

110M6 compressor casing (upper half)

60MB6I LNG MR compressor

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Compressor Selection

Advanced Design Tools

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

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

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

Performanceenhancementsincludehigheraero-dynamicefficienciesandlongerperformancelifetohandlethedemandingLNGserviceapplications.

Elliott’slongtermrelationshipswithmajorLNGprocessdesignersareinvaluableformatchingtheprocesstothecompressorperformancecharacteris-ticsandoptimizingplantoutput.OneexampleistheintegrationofElliottcompressorsintothedesignoftheC3-MRliquefactionprocess.

Impeller for high flow 103M3 compressor

Modeling a 103M3 compressor

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Supporting “Mega” Production Requirements

EDSCAN – Analytical Simulation

InLNGservice,themostextremeprocessdemandsareinthepropanerefrigerationapplications.Theseapplicationsinvolvehighmolecular weights combined with lowtemperaturesandvariationsinvolumetricflowrequirements.Large volume side-streams are commonintheliquefactionprocess.

Elliott’sexperienceinthedesignofcompressorsforthesechal-lenging conditions ensures an accuratefluiddynamicdesignwithhighperformance,abroadoperatingrangeandconserva-tive mechanical characteristics. Modelingconfirmstheproperdesignofthemergingflowstreams at similar velocity levels forminimumpressurelossandmaximumefficiency.

Elliott’sproprietaryEDSCANsimulationprogramisusedtoconfirmthesizingofthestarterorhelpermotorforacompressor/gasturbinetrainbyanalyzingthecompressorstringperformanceundervariouscustomerandfactoryprocessconditions.Elliotthassimulatedavarietyofoperatingconditions,including:

Start-up�

Controlled & emergency shutdowns�

Anti-surgevalveselectionconfirmation�

Alternategasoperationssuchasnitrogenpurge�anddefrostingoperations

Processupsetconditions�

Simulationofsitestart-upconditionsforfactory�testing

SimulationsfullymodeltheperformanceoftheLNGtrain,whichenablesElliotttopredictthestart-upandrunningperformanceofthecompressor,motorandgas turbine under site conditions.

88M4 & 60M4 MR compressors

Side-load and mainstream compressor flow

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Enhanced Manufacturing Capabilities

Elliottmanufacturessomeofthelargestcentrifugalcompressorseverbuilt.Theselargeframetech-nologiesaredirectlyapplicabletotheproductionrequirementsofLNGplantsona“mega”scale.Themaximuminletflowsfortheselargecompressorsareupto320,000icfm(544,000m3/h)inasingleflowconfiguration.

InElliott’smanufacturingfacilities,largeandpowerfulweldmentpositionersallowcontinuousweldingofcompressorcasingsbymovingthemountedcasingaround the welder.

TheMastercenterMillTurningMachinewasthefirstofitskindtobeinstalledintheUnitedStatesandisusedtomanufacturediaphragmsandsealhousings.

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

Thesemachiningcenters,alongwithSixSigmaandLeanManufacturingprinciples,enableElliotttoreducecycletimesforlargecompressors.

State-of-the-Art Test FacilitiesFewcompressormanufacturershavecapabilitiesthatmatchtheextentandversatilityofElliott’stestingfacilities.

TestingtoAPI617andASMEPowerTestCode�(PTC-10)requirements

Apermanentgasturbinetestpadincorporat-�ingallrequiredutilitiesandnecessaryauxiliaryequipment

Full-loadstringtestingcapabilitieswithagas�turbinedriverover100,000hp(74.5MW)

Fullvariablefrequencydrive(VFD)capabilities�includingcompressordriveandgasturbinestart-up

Customer-specifictestingcapabilitiesforLNG�processapplications

Elliott’sfacilitieshaveearnedISO9001certificationbyadheringtostrictqualityassurancepracticesthroughoutthedesign,manufacturingandtestingofturbomachineryproducts.

Full load LNG gas turbine/compressor test set-up

103M3 compressor casing (lower half) on the masterhead

103M Impeller on a 5-axis weldment positioner

60MB6I LNG MR compressor

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Elliott’s Global Services

Service Parts OrganizationElliott’sISO9001certifiedServicePartsorganizationworkswithcustomerstoensureoptimalperformanceandreliabilityofallElliottequipment.ServicePartsengineersarequalifiedtoaddressthevaryingneedsofeachcustomer,includingpartsidentification,upgraderecommendations,andcustomizedpartskitsdesign.

Elliott’sServicePartsorganizationhasextensivemachiningcentersandfinishedpartsinventoriesthatallowquickmanufactureandshipmentofparts.Emergencycustomersupportisoffered7daysaweekandsamedayshipmentisavailableonmoststockitems.

Elliott’sserviceshopsarestrategicallylocatedworldwidetoserviceandrepairElliottandnon-Elliottturbomachinery.Theserviceshopshaveextensiveexperiencerangingfrominspectionsandoverhaulstospecialtymachiningandweldrepair.

Customer training is another available service and can be conducted either on-site or in a classroom setting atthecustomer’slocationoratanyElliottmanufactur-ingfacilityorserviceshop.

Field SupportRetrofittingandreratingcompressorsinthefieldcanachievecapacityincreases,de-bottleneckingandprocessoptimization.Elliottoffersacomprehensiverangeofsupportservicesforalltypesofturbo-machineryfromanymanufacturer.Elliott’sglobalservicenetworkprovidesexperiencedon-siteprojectmanagement,supervisionandskilledlabortoperforminstallation,commissioning,andstart-upactivities.Elliottoffersmaintenanceprogramsthatrangefrompreventative,routineandemergencyservicestolong-term service agreements.

88M4 low MR pressure compressor

88M6I LP/MP MR compressor

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ElliottCompanyreservestherighttomodifythedesignorconstructionoftheequipmentdescribedinthisbulletinandtofurnishit,asalteredwithoutfurtherreferencetotheillustrationsorinformationcontainedherein.

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©ElliottCompany2009 LNG

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