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GEA Mechanical Equipment engineering for a better world Processing Lines from GEA Westfalia Separator for the Edible Oil Industry
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Page 1: Processing Lines from GEA Westfalia Separator for the ......Processing Lines from GEA Westfalia Separator for the Edible Oil Industry. 2 GEA Westfalia Separator. 3 ... 12 Special Degumming

GEA Mechanical Equipmentengineering for a better world

Processing Lines from GEA Westfalia Separator for the Edible Oil Industry

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GEA Westfalia Separator

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GEA Westfalia Separator

4 OilsandFatsProcessing6 ChemicalRefining7 PhysicalRefining8 ClarificationofPressOil9 Degumming9 WaterDegumming10 SimpleAcidDegumming12 SpecialDegumming14 Super-/Uni-Degumming16 TOP-Degumming18 Neutralization18 StandardNeutralization20 NeutralizationofUndegummedOils21 MiscellaRefining22 Winterization22 WetDewaxing24 ColdRefining25 PolishingFiltration26 Fractionation26 DryFractionation28 ProcessingofBy-Products28 SoapstockSplitting30 GEAWestfaliaSeparatorserv&care

Table of Contents

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GEA Westfalia Separator

Vegetable oil is one of the most importantprimaryfoods.Thequalityofthefinalproductdependsontherefiningmethodandthenatureofthecrudeoil.GEAWestfaliaSeparatoroffersawiderangeofsolutionsdesignedtomaximizevalue, ranging from a separator with a dailycapacityof10tonnesforoperatorsofsmalloilmillstoseparatorswithcapacitiesofmorethan1600tonnesperdayforlargerefineries.

The production processes and technologiesusedmustbeasvariedasthedifferenttypesofoilprocessed.

GEA Westfalia Separator designs andmanufacturesa customized solutionwhich istailoredtomeettherequirementsofthespecificapplication.Thecentrifugeisalwaysfoundatthe heart of the installation. Whether a self-cleaning separator with a maximum level ofautomation or a discontinuously operatingsystem,everycustomerisabletofindthebestsolution ineconomicandtechnological termsfor thier specific production tasks. We notonlysupplythemechanicalseparationfacility,but also supply all other components andsystemsnecessaryforanefficientandreliableproductionline.

Oils and Fats Processing Robust – reliable – efficient

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GEA Westfalia Separator

Processing of oils including:• Soybeanoil• Canolaoil• Sunfloweroil• Animalfat• Cottonseedoil• Cornoil• Fishoil

Our core competence in edible oil refining:• Pressoilclarification• Degumming• Neutralization• Dewaxing• Fractionation• Soapstocksplitting

Special applications:• Ni-catalystremoval• Lecithindeoiling• Bleachingearthdeoiling• Re-refiningofusedfryingfats

Our core competence in oleochemical applications:• Transesterification (e.g.,formakingbiodiesel)• Epoxidizedoils• Mono-/diglycerides• Fattyacids• Glycerin• Soap• Fattyalcohols

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GEA Westfalia Separator

Chemical Refining Different Processes – One Solution

Twoprocesseshavebeendevelopedforrefiningedibleoilsand fats.Thedecisionas towhichprocessistobeuseddependsonthetypeandqualityofcrudeoiltobeprocessed.

Chemical refining is the traditional method,wherethefreefattyacidsofthecrudeoilsareneutralized with caustic soda. The resultant

sodium soaps are separated by means ofseparators. The neutral oils are subsequentlybleachedanddeodorized.Thismethodcanbeusedforreliablyrefiningvirtuallyallcrudeoils,includingoilsoflowquality,withtheexceptionofcastoroil.

The fields highlighted in the dark color represent the core business of GEA Westfalia Separator and are highlighted in this brochure.

Neutralization

Winterization

Bleaching

Deodorization

Edible oil

Soapstocksplitting

Split fatty acids

Pressing Extraction

Press oilclarification

Waterdegumming

Seed

Animal feed

Beans

Drying Lecithin

Bleaching

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GEA Westfalia Separator

Physical Refining

Inthealternativemethodofphysicalrefining,thefreefattyacidsareremovedbydistillationinonestageduringdeodorizing.Afundamentalcriterionforusingthismethodisthatthecrudeoils should be degummed as effectively aspossible.Thisisonlypossibletoalimitedextentwithsomecrudeoiltypes.Otheroils,forinstancecottonseedoilorfishoil,arefundamentallynotsuitableforphysicalrefining.

GEA Westfalia Separator is able to supplysuitable process lines for both processes; wehavelimitedourselvestotheprocessesinwhichcentrifuges are used, or which complementcentrifugelines.

The fields highlighted in the dark color represent the core business of GEA Westfalia Separator and are highlighted in this brochure.

Acid degumming

Winterization

Bleaching

Deodorization

Edible oil

Fatty acids

Pressing Extraction

Press oilclarification

Waterdegumming

Seed

Animal feed

Beans

Drying Lecithin

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GEA Westfalia Separator

Theoilwhichisdischargedfromexpellerpresseshasvarioussolidcontentlevelsdependingontheoilseedtypeandtheconditionofthepress.Inordertoremoveparticularlylargesolidparticles,theoilisusuallyfedintoasettlingtank,whichisusedsimultaneouslyasabuffertank.Insomeinstallations,avibratingscreenisusedforpre-cleaning.Inothers,theoilistakendirectlyfromthepresstothepressoilclarificationunit.

Inorder tosupport theseparationprocess, thesolidsarewettedwithhotwater.Awaterquantityof 1% in relation to the oil quantity isnormallyadequate.Thewaterismixedwiththeoil in thedecanter.Thedecanter–whichisahorizontalscroll-typecentrifuge–continuouslyseparatesthesolidsfromtheoil.

Clarification of Press Oil

Asasideeffectofaddingwater,anyphosphatidespresentarehydratedandthenremovedtogetherwiththesolids.

Inordertoavoidoillosses,thesolidsarereturnedtothepress.Thepurifiedoiliseitherprocesseddirectlyor, if it is storedorsold, it shouldbedriedinavacuum.

Many features for your benefit• Continuoussolidsseparation• Lowcostofautomation• Lowerspacerequirement• Simultaneousdegumming

Seed

Screw press

Press oil

Foots recycle

Screening tank

Press cake

Water

Cleanedcrude oil

Solids

Decanter

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GEA Westfalia Separator

Steam Hot water

Crude oil

Mixer Gums Separator

Sludge

Degummedoil

Vacuumdryer

Vacuum

Asmoothactionpump isused for conveyingthe crude oil to a heat exchanger, whichis used for heating the crude oil to theoptimum process temperature. A quantityof hot water corresponding to the content ofphosphatides in the crudeoil is added to theoilandmixedintensively.Aspecialcentrifugalmixer, which simultaneously conveys the oildirectlytotheseparator,isusedforthispurpose.Thehydratablephosphatidesswellimmediatelydue to the particularly intensive mixing ofoil and water, andnoadditional reaction timeisnecessary.

A separator is used to continuously separatethe phosphatides which are insoluble in oil.They are either added directly to animalfeed or dried in thin-film evaporatorsand sold in the form of lecithin. Lecithinis a valuable by-product, which is used as anemulsifier, e.g., in the food, animal feed,pharmaceuticalandcosmeticsindustries.

Water Degumming

Thedegummedoiliseitherconveyeddirectlytotherefiningstage,orithastobedriedinavacuumifitisstoredorsold.

Many features for your benefit• Lecithinrecovery• Reductionoflossesintherefiningstages

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GEA Westfalia Separator

Simple acid degumming is suitable forpretreatingpalmoil,palmkerneloil, coconutandoliveoilaswellasanimalfats.Thismethodofdegummingaims to reducebleaching earthconsumption in the physical refining process,makingthisanextremelyeconomicalmethod.

Thecrudeoilisinitiallyheatedtotheoptimumprocess temperature in a heat exchanger. Ameteringunitisusedforaddingasmallquantityof phosphoric or citric acid, which is mixedintensivelywiththeoilinacentrifugalmixer.Afterabriefreactiontime,hotwaterisaddedandmixed.

Simple Acid Degumming

The heavy phase which contains phosphatides,proteins,pigmentsandother impurities is thenseparated.Theoilwhichistreatedinthiswayisgenerallysentdirectlytothebleachingstageanddeacidifiedbymeansofdistillation.

Many features for your benefit• Reductionofbleachingearthconsumption• Betterendproductquality• Lessfoulingofdownstreamequipment

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Steam Acid Hot water

Holdingtank

Holdingtank

Crudeoil

Mixer Mixer Gums Separator

Sludge

Vacuum

Vacuumdryer

Degummedoil

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GEA Westfalia Separator

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This degumming method can be carried outwith slightly modified neutralization lines.Depending on the quality of the crude oil,it ispossible todecidewhether theoilcanberefinedbychemicalorphysicalmeans.However,withrespecttotheresidualgumcontent,itisnecessarytoacceptacompromiseincomparisonwith the more demanding acid degummingmethodsdescribedbelow.

The crude or water-degummed oil is initiallyheatedtotheoptimumhydrationtemperature.Asmallamountofphosphoricorcitricacidisthenaddedandintensivelymixedinthecentrifugalmixer.Afteranappropriatereactiontime,some

Special Degumming

of this acid is neutralized with very dilutedcausticsodaandasufficientamountofwateris simultaneously added for hydration of thephosphatides.Thecausticsodaandwaterarealsomixedtogetherwiththeoilinthenextcentrifugalmixer. The mixer conveys the oil through ahydration reactor to thenextheat exchanger,whichheatstheproducttothecorrespondingseparationtemperature.Phaseseparationthentakesplaceinaseparatortoproducegumsandoil.Theresidualphosphatidecontentwhichcanbe achieved in thiswaymaybe adequate forsome applications. In most cases, however,furtherreductionisrecommendedbymeansofwashingtheoil.

Steam Acid Lye Hot water Steam

Crudeoil

Mixer Mixer

Holdingtank

Holdingtank

Sludge

Gums Separator

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If this is the case, a certain quantity of hotwaterisaddedtotheoil.Theyarethenmixedand conveyed to a second separator whichcontinuouslyseparatesthewashwater.

The oil which is virtually degummed is theneitherconveyeddirectlytothebleachingstage,or it is dried in a vacuum if it is to be soldorstored.

Many features for your benefit• Thisprocesslinecanalsobeusedfor neutralization(flexibility)

Hot water Vacuum

Vacuum dryer

Degummedoil

Sludge

Mixer SeparatorWash water

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GEA Westfalia Separator

After thecrudeoilhasbeenheated, speciallymodified phosphatides which subsequentlyfacilitatephosphatidehydrationcanbeadded.However, this is only necessary in exceptionalcases.Undernormalconditions,asmallquantityofcitricacidisaddedtothecrudeoilandmixedvery intensively with the oil. After a certainreactiontime,theoiliscooledandthenecessaryquantity of water is added for hydrating thephosphatides. After more reaction time inanagitatortank,theoil isheatedtoseparatingtemperatureandthegumsareseparatedfromtheoilinaseparator.

This concludes the super-degumming stage.However, depending on how the oil is to besubsequently treated, it may be necessary toremove the phosphatides more efficiently, asextremely fine particles cannot be separated.A further process stage, the uni-degummingmethod,hasbeendevelopedforthispurpose.

Theoiliscooledforasecondtimeandasmallamount of caustic soda is added. Mixing ofthe caustic with the oil in a special mixingtankisfollowedbyfurtherreactiontimeinanagitatortank,duringwhichthefinephosphatideparticlesagglomeratetoformlargerparticles.Thesecanbeseparatedinaclarifieraftertheoilhasbeenheated.Theoilissubsequentlydriedinavacuum.

The hydration and agglomeration ofphosphatides at low temperature producesa positive side effect for wax-containingoils (e.g., sunflower oil and corn oil).Some of the wax crystallizes and isseparated together with the gums. Thisproduces a considerable advantage in thesubsequentrefiningprocessoftheseoils.

Many features for your benefit• P-content<10ppmpossible• Canbecombinedwithpartialdewaxing

Super- / Uni-Degumming

Steam

Mixer Mixer

Crudeoil

Modifiedlecithin

Acid

Coolingwater

Lye

Mixingtank

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Steam

Steam

Mixer

Coolingwater

Hotwater

Hydrationtank

Sludge

Gums

Gums

Separator

Mixingtank

Agglomerationtank

Clarifier

Vacuum

Vacuumdryer

Degummedoil

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GEA Westfalia Separator

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GEA Westfalia Separator

Steam

Mixer

Crudeoil

Holdingtank

Acid

Acid

Thecrudeoilisinitiallyheatedtotheoptimumprocesstemperatureandasmallquantityofacidisadded.Followingintensivemixingandabriefreaction time,someof theacid isneutralizedwith diluted caustic soda. After mixing in acentrifugalmixer,thegumsareseparatedfromtheoilinaseparator.

Becauseveryfinephosphatideparticlescannotbeseparated,acertainamountofwaterisagainaddedtotheoil.Followingabriefreactiontime,themixtureisconveyedtoahigh-performanceclarifierwhichisabletogenerateanextremelyhighg-force.Thisenablesthefineparticlestobecontinuouslyseparatedwiththewater.Inordertoavoidoillosses,thisphaseisrecycledintothefeedofthefirstcentrifuge,wherethefinegumparticlesareseparatedtogetherwithmostofthephosphatides.Theoilwhichisdegummedinthiswayissubsequentlydried.

Many features for your benefit• P-content<10ppmpossible• Shortretentiontimes• Verycompactinstallation

TOP-Degumming

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GEA Westfalia Separator

Sludge

SeparatorMixer

Sludge

Mixer

Gums Clarifier

Vacuum

Vacuumdryer

Degummedoil

Holdingtank

Lye Water

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GEA Westfalia Separator

This method is suitable for neutralizing pre-degummededibleoilsoroilswhichoriginallyonlyhavealowphosphatidecontent.Thefreefattyacidsaresaponifiedwithcausticsoda,andthesodiumsoapisseparated.

The oil is initially heated to the optimumprocess temperature. In order to conditionthe non-hydratable phosphatides, a smallquantity of concentrated phosphoric acidis added and intensively mixed with theoil. Following a brief reaction time, dilutedcaustic soda is added in order to neutralizethe free fatty acid and the phosphoric acid.Aftermixingwiththeoil,themixtureiseitherconveyed directly to the first separator or itpasses through a further reaction tank. Thelatter is recommended only for oils witha relatively high phosphatide content.Self -c leaning separators are mostlyused for separating the sodium soap.However, the residual soap content in theneutraloil is still toohighfor thesubsequentprocessstagesanditmustbefurtherreducedby one or two washings. For this purpose,hot water is added to the oil and intensivelymixed.Thesoapywashwaterisremovedinafurtherseparator.

In general, one wash stage is adequate. Asecondwashing isonlynecessary ifvery lowresidualsoapcontentsarerequired.However,alowresidualsoapcontentcanalsobeachievedby acidifying the wash water with citric orphosphoricacid.

Asecondcaustictreatmentoftheneutraloilsis only advisable in exceptional cases. Thismainlyappliestocottonseedoil,somostofthegossypolisremoved.Thisoilshouldalwaysbeneutralizedin3-stageinstallations.

Dependingonthesubsequentbleachingmethod,theneutralizedandwashedoilissubsequentlyvacuum-dried.

Standard Neutralization

Many features for your benefit• Veryreliableprocess,e.g.,forpoor-quality crudeoils• Highproductqualityguaranteed• Alloilscanbeprocessed

Steam

Mixer

Crudeoil

Lye

Steam

Mixer

Holdingtank

Acid

Separator

Conditioning Neutralization

Hotwater or Lye

Washing or re-refining

Wash water

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GEA Westfalia Separator

Separator

MixerVacuum

Vacuumdryer

Lye

Separator

Mixer

Sludge

SludgeSludge

Neutralization

Soapstock

Washing Drying

Wash water Wash water

Hot water

Neutralizedoil

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GEA Westfalia Separator

ThismethodhasbecomeestablishedmainlyintheUSAforrefiningsoybeanoil.Theprocessisacombinationofdegummingandneutralization.

For conditioning the non-hydratablephosphatides,asmallquantityofphosphoricorcitricacidisaddedtothecrudeundegummedoil.Insomecases,theacidisaddedinthefeedtankwithanagitatorupstreamof the installation.This involves several hours of reaction time.However, a more effective method is to addtheacidupstreamofacentrifugalmixer.Theintensivemixingenablesthereactiontimetobereducedtoafewminutes.Dilutedcausticsodaisthenaddedinordertoneutralizethefreefattyacids. Adequate water must be present withthecausticinordertohydratethephosphatides.Followingareactiontimeofseveralminutesinspecialretentionmixers,theoil isheatedandaddeddirectlytothefirstseparatorinordertoseparatethesoapstock.

Neutralization of Undegummed Oils

The neutral oil is washed in order to furtherreduce the residual soap content. For thispurpose,acertainquantityofhotwaterisaddedtotheoil,mixedinacentrifugeandseparatedinto wash water and oil in a separator. Theresidualhumidityoftheoilisfurtherreducedinavacuumdrier.

Many features for your benefit• Priorwaterdegummingnotnecessary• Highendproductquality

Steam

Crude oil(conditionedwith acid)

Lye

Separator

Sludge

Holdingtank

SoapstockMixer Mixer

Steam

Sludge

SeparatorWash water

Hot water

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GEA Westfalia Separator

This method was originally developed forneutralizingcottonseedoil.Itenablesmostofthegossypoltoberemovedwithsimultaneouslylowneutralizationlosses.

Themiscellawhichdischargesfromtheoilseedextraction stage ispre-concentratedeitherbyaddingthepressoilorduringthefirststageofhexaneevaporation.Themiscellatemperatureisthenbrieflysetbelowtheevaporationpoint,and the necessary quantity of caustic soda isaddedinordertoneutralizethefreefattyacids.Mixingisfollowedbyareactiontimeinspecialretentionmixers.Thesoapstockisseparatedintheseparator.Becauseofthehighspecificdensitydifferencebetweenmiscellaandsoapstock,theseparatingefficiencyisatitsoptimumlevelanditisnotnecessarytowashtheoilafterhexaneevaporation. If it is necessary to treat oilswith a higher phosphatide content, it isrecommended that an acid is added beforethecaustic.

Because of the risk of explosion posed byhexane,allinstallationparts,andinparticularthe centrifuge, are explosion-proof. Due tospecialsafetyconsiderations,thecentrifugeisblanketedwithinertgas.

Miscella Refining

Many features for your benefit• Lowlosses• Goodgossypolremovalforcottonseedoil• Nowastewaterifthesoapstockisadded toextractionmeal• Lessfoulingofhexaneevaporationcolumns

Mixer

AcidSteam

Holdingtank

Lye

Holdingtank

Mixer Soapstock Separator

Sludge

NeutralizedMiscella

Miscella

Sludge

Vacuum

Vacuumdryer

Neutralizedoil

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GEA Westfalia Separator

Somevegetableoils,suchassunflowerorcornoil,containwaxes(long-chainedfattyalcoholsorfattyacidesters),whichcrystallizeatlowertemperatures and result in turbidity in theoil. Wet winterization in combination withneutralization is suitable for removing thesewaxes.

Thecrudeoilisinitiallyneutralized,meaningthat in order to condition the gums, an acidis initially added and the free fatty acids arethen neutralized with caustic soda. After the

Wet Dewaxing Winterization

Steam

Crude oil

Lye

Separator

Sludge

Holdingtank

SoapstockMixer

Hot water

Mixer Mixer

Steam LyeAcid

soapstockisseparatedinthefirstseparator,theoilisconveyedtotheactualwinterizingstage.

Asmallquantityofcausticsodaisagainaddedinordertosetaspecificresidualsoapcontentin theoil.Thissoap is subsequently requiredas a wetting agent during crystallization inordertobindthewaxestowater.Aftermixingofcausticandoil,theproductiscooledtothecrystallizationtemperature.Waxcrystalsformintwotofourcrystallizationtanksconnectedinseries.

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GEA Westfalia Separator

Duetothesoapintheoil,thesewaxcrystalsbindtothewater,whichisaddedtothecrystallizers.Inordertoreducetheviscosity,theoiliscarefullyheated and conveyed to a separator whichcontinuouslyseparatesthewaxywater.Theoiliswashedagaininordertofurtherreducetheresidualsoapcontent.Forthispurpose,theoilisheatedandacorrespondingquantityofhotwaterisadded.Afterintensivemixing,itisseparatedin a further separator. Vacuum drying thentakesplace.

Many features for your benefit• Integrationofwinterizinginneutralization• Fullycontinuousoperation• Removalofveryhighwaxamountspossible

Wash water

Hot water

Steam

Separator

Sludge

Vacuum

Vacuumdryer

Neutralized and winterized oil

Sludge

Separator

Water

Wax Cooling water

Chilledwater

Crystallizer

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GEA Westfalia Separator

Thisprocessisanalternativetowinterizationpreceded by neutralization. However, use oftheprocessisconfinedtooilswitharelativelylowfreefattyacidcontentastheoillossesareotherwisetoohigh.Sunfloweroilisthereforeanidealproductforthisapplication.

Asmallamountofacidisaddedtothecrudeoilwithoutpriorheating.After thoroughmixingandashortretentiontime,theoiliscooled.Thecausticquantity required forneutralizing thefreefattyacidsisadmixedwiththeoil.Theoilthenflowsthroughcrystallizerswitharesidencetimeofseveralhours.Theoilisgentlyheated

Cold Refining Winterization

toreducetheviscositybeforethesoapstockisseparatedinacentrifugealongwiththewaxes.Thedewaxedneutral oil has tobewashed toreducethesoapcontent.It isfirstheated,therequiredwashwaterquantityisaddedand,afterthorough mixing with the oil, it is separatedagaininasecondcentrifuge.Finally,theoilisdriedinavacuumdryer.

Many features for your benefit• Compactinstallation• Effectivewaxremoval

Crude oil

Lye

Separator

Sludge

Holdingtank

Soapstock/wax

Mixer

Washingwater

Hot water

Mixer

Mixer

Acid

Separator

Sludge

Vacuum

Vacuumdryer

Neutralized and dewaxed oil

Hot water

Chilledwater

Crystallizer

Steam

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GEA Westfalia Separator

The wet winterizing method previouslydescribeddoesnotguaranteethat100%ofallwaxesarealwaysremoved.Ifparticularlystrictprocess guarantees are applicable, additionalpolishingfiltrationisnecessaryforcold-stableoils.Thisfurtherfiltrationprocessiscarriedouteitherafterbleachingorafterdeodorizing.

For this purpose, the oil is cooled again andallowedtocrystallizeforseveralhours.Itisthenfilteredusingfilteraid.Despitethisadditionalfiltration,theentirewinterizingmethodoffers

Polishing Filtration Winterization

economical advantages in comparison withmethodswhichonlyusefiltration.Themajoradvantageisthatmuchlessfilteraidisusedandlongerfiltercyclesareachieved.

Many features for your benefit• Minimizingconsumptionoffilteraids• Higherfiltrationspeed• Longerfiltercycles

Bleached ordeodorized oil

Chilledwater

Filter aidslurry pump

Mixer

Crystallizer

Pre-coatingpump Pre-coating

andbody feed tank

Filter aid

Pressureleaf filter

Winterized oil

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GEA Westfalia Separator

Oilsandfatsareamixtureofdifferenttriacyl-glycerols. If these mixtures contain a higheramountof saturated fatty acids, theproductstendtopartlycrystallizeatambienttemperature.Fractionationisaprocesstosplitfatsandoilsintoaliquidpart,theolein,andasolidfraction,thestearin.

Thefractionationprocessconsistsoftwostages,the crystallization and the separation of theoleinandstearin.Thecrystallizationisabatchprocesswheretheoil/fatisfirstheatedabovethemeltingpoint.Thenaslow,controlledcoolingtakesplace,followingaspecificcoolingcurveadapted to the kind of oil/fat. The aim is toproducestearincrystalswhichcanbeseparatedfromtheliquidoleinphase.Theprocessiscalleddryfractionationbecausethereisnodetergentorsolventaddedtotheproduct,asisthecaseinsomeotherknownprocesses.

This separation is done with a speciallydesignednozzleseparator.Thestearincrystals,having slightly higher density, are dischargedcontinuously through nozzles in the peripheryof the bowl. The lighter olein is clarified inthe disc stack of the bowl and continuouslydischargedfromthecentrifugeunderpressure.The stearin slides down into a meltingtank,whereitisliquefiedandpumpedtofurtherprocessingorstorage.

Many features for your benefit• Fullycontinuousstearin/oleinseparation• Adjustablestearinandoleinqualityduring separation• Lowinstallationandmaintenancecosts• Hermeticallyclosedsystem• Nocooledroomforseparatorrequired

Dry Fractionation

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GEA Westfalia Separator

M

Oil

Heating /cooling

Heating /cooling

Crystallizer

Nozzle separator

Meltingvessel

Olein

Steam

Heater

Stearin

Condensate

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GEA Westfalia Separator

Duringthechemicalneutralizationofoilsandfats,soapstock(sodiumsoapsofthefreefattyacids)isobtainedasaby-product.Thiscanbesplitintofattyacidsandwaterbymeansofacidificationwithstrongacids(sulfuricorhydrochloricacid).Fattyacidsareavaluableproductintheanimalfeed,soapandoleochemicalindustries.

The phosphatides, separated together withthe sodium soaps during the neutralizationprocess,frequentlyhaveasignificanteffectonthe splitting process during the formation ofstableemulsionsduringphaseseparation.Thiscanbepreventedtoalargeextentbymeansofsecondarysaponification.

Soapstock Splitting Processing of by-products

For thispurpose, the soapstock is exposed tohigher temperatures and pressures. Duringa reaction time under these conditions,part of the phosphatides and the neutraloil in the soapstock saponify. Aftersaponification,dilutionwatercanbeaddedinan intermediate tank before the soapstock isconveyedtotheactualsplittingprocess.Inthesplittingtank,thepHvalueisreducedbyaddingastrongacid.Thesoapstockbreaksdownintofattyacidandwater,whicharethenseparatedcontinuously inastaticdecantingvessel.Thesplit fattyacidcanbedirectlyprocessed.Theacidwaterisconveyedtoafatseparatorwithanupstreamflotationchamber.Thede-fattedwaterissubsequentlyneutralizedwithcausticsoda.

Many features for your benefit• Fullycontinuousoperation• Lowerlevelofemulsion

Water

Intermediatetank

Splittingtank

Saponification column

Heat exchanger

Soapstock

Condensate

Sulphuric acid

Steam

Floatationtank

Decantingtank

Split fatty acid

Caustic soda

Neutralizationtank

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GEA Westfalia Separator

Gear driveTheconventionaldriveconceptoftheseparatorsisthewormwheelgear,fluidclutchandstandardmotor with direct switching.The toothing ofthewormwheelgearwasoptimizedinordertoreducethenoiselevel.

Advantages of the gear drive•Norequirementforthefrequencyconverter•Reliabledesign•Suitabledesignforsmallmachines

Flat belt driveFlatbeltdrivecanbeusedfortheheavybowlsof larger machines. The power transmissionfromthe torque-controlledmotor to thebowlspindle is via a single flat belt without anintermediaryclutch.Thedesignisverysimpleandmaintenance-friendly.Thespindlecanberemoved together with the complete bearingassembly and can be serviced outside themachine.Thisconsiderablyreducesdowntimerequiredformaintenance.

Advantages of the flat belt drive•Longeroilchangeinterval•Longermaintenanceintervals•Lowermaintenancecost•Reducednoiselevel

Direct driveDirectdriveistheintelligentsimplificationofseparation technology.Directdrive isused inapplicationswheretheupperlimitforgearloadshas been reached or when a belt drive isundesirable.Directdriveseparatorsdrivewithvirtually loss-free power transmission. Lessenergyconsumption,lowermaintenanceandlessspacerequirementsmeanincreasedperformanceforproduction.

Advantages of the direct drive•Lowerspacerequirement•Lowermaintenancerequirement•Lowerenergycosts•Fewerwearingparts•Furtherreductionofnoiselevelcomparedto

theflatbeltdrive•Thedirectdrivemeetsallexplosion

proofrequirements

Available Drives for Edible Oil Separators

RSE 300 with direct drive

RSE 60 with gear drive

RSE 220 with flat belt drive

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GEA Westfalia Separator

Whereverseparatingtechnologytaskshavetobe carried out, our serv&care programassures comprehensive services right fromtheverybeginning.Inclosecooperationwithourcustomers,solutionsaredevelopedtomeetspecificneeds.

The customers benefit not only fromtraditional services such as inspection,maintenance, original spare parts and repairwork provided by the original manufacturer,butalsofrompro-activesolutionswhichavoidrisk, e.g., online and offline monitoring withourGEAWestfaliaSeparatorwewatch®.

Ensuring Maximum Process Efficiency, Availability and Budget Security with serv&care from GEA Westfalia Separator

Modernizationorupgradingtostate-of-the-arttechnology also provides the opportunity toboostservicesasrequired.

Training provided on site or in the moderntraining center of GEA Westfalia Separatorensuresthatourcustomer‘semployeesreceivetraining in the proper handling of high-techinstallations.Thisprovidesadditionalsafety.

Ourserv&careprogramprovidesformaximumprocessefficiencyandinstallationavailabilityaswellasbudgetsecurity.Andthesebenefitsareprovidedthroughouttheentirelifecycleoftheentireinstallation.

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GEA Westfalia Separator

Services performed by specialistsWhennormalequipmentuseresultsinwearandtear,westandbehindthequalityofourrepairservices.GEAWestfaliaSeparatorhastrained mechanics on staff that have theproprietaryknowledgetomakethenecessaryrepairs.Intrueemergencies,aresponseteamcanbequicklydeployedtoyourfacility.Sparebowlandscrollassembliesarereadilyavailableforyouruse,soprocess/productionlinesarenotidlewhilerepairsareunderway.Andwhenequipment needs to be repaired off-site, weoffertwofullservicelocationshereinNorthAmerica.OurfacilityinPatterson,CaliforniawasspecificallydevelopedtoservicecustomersbasedintheUnitedStatesandCanada.Here,decanter and separators of all sizes can berepaired.Thereisalsoalargepartsinventoryandaspeciallydesignedtrainingfacility. serv care

Service from the original manufacturer

•Serviceengineersmovequicklytothesite

•Extensiveservicenetwork

•Riskavoidedbyserviceprovidedbytheoriginalmanufacturer

•Pro-activesolutionswhichavoidrisk

•Upgradingtoboostperformance

•Stafftraining

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GEA Mechanical Equipment US, Inc.

GEA Westfalia Separator Division

Headquarters:100 Fairway CourtNorthvale, NJ 07647201-767-3900

Midwest:1707 N. Randall Road, Suite 355Elgin, IL 60123630-503-4700

South:4725 Lakeland Commerce Parkway, Suite 4 Lakeland, FL 33805863-603-8900

Southwest:2408 Timberloch Place, Suite C-4 The Woodlands, TX 77380281-465-7900

West Coast:Western Region Customer Support Center555 Baldwin RoadPatterson, CA 95363209-895-6300

GEA Mechanical Equipment Canada, Inc.

GEA Westfalia Separator Canada Division

835 Harrington CourtBurlington, ON L7N 3P3289-288-5500

Toll-Free: 800-722-662224-Hour Technical Help: 800-509-9299www.wsus.com

GEA Group is a global engineering company with multi-billion euro sales and operations in more than

50 countries. Founded in 1881, the company is one of the largest providers of innovative equipment and

process technology. GEA Group is listed in the STOXX® Europe 600 Index.

We live our values.Excellence • Passion • Integrity • Responsibility • GEA-versity


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