2. Degradation & Varnish

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1、RotatingEquipmentLubricationExcellenceFluidDegradation&VarnishPresentedby:DaveWooton©2014Fluitec.AllrightsreservedRotatingEquipmentLubricationExcellenceWhatisVarnish?12©2014Fluitec.AllrightsreservedWhatisVarnish?•Thepracticaldefinitionis:–Materialthatisasecondphas

2、ewiththelubricantfluid.•Thatmeansanythingthathascomeoutofthefluidtocauseoperationalissues.•Itcanbeasolid,semi-solidorun-expectedsecondphaseliquid.•Itcanbeonthebottomofthetank,stucktothesurfaceorfloatinginthefluid.•Itexistsasamajorpotentialtothesystem’sreliabilityR

3、otatingEquipmentLubricationExcellence3Ref:ASTMD.02C.01Page*.©2014Fluitec.AllRightsReserved.Whatdoyousee?Describeeverythingyouobserveinthispicture…4RotatingEquipmentLubricationExcellencePage*.©2014Fluitec.AllRightsReserved.Ref:Livingstone,WootonSoftContaminantsOild

4、egradationby-productsconsistingofdegradedbasestockand/oradditivecomponentsRotatingEquipmentLubricationExcellence5Ref:Livingstone,WootonPage*.©2014Fluitec.AllRightsReserved.VarnishcanbesoftandgooeyRotatingEquipmentLubricationExcellence6SludgefoundinCRPSystem.Source

5、LivingstonePage*.©2014Fluitec.AllRightsReserved.VarnishcanbehardandbrittleRotatingEquipmentLubricationExcellence7SludgefoundinCRPSystem.SourceLivingstonePage*.©2014Fluitec.AllRightsReserved.Or,anythinginbetween.RotatingEquipmentLubricationExcellence8Source:MobilPa

6、ge*.©2014Fluitec.AllRightsReserved.Depositscanbeinawiderangeofcolors.RotatingEquipmentLubricationExcellence9Ref:Livingstone,WootonPage*.©2014Fluitec.AllRightsReserved.Varnishcanalsoform“stalactites”onreservoirceilings.RotatingEquipmentLubricationExcellence10Sludge

7、foundinMRGSystem.Source:LivingstonePage*.©2014Fluitec.AllRightsReserved.RotatingEquipmentLubricationExcellenceTheMechanismofVarnishFormation211©2014Fluitec.AllrightsreservedTheDepositionProcessThetwokeyvariablesthatdeterminethevarnishdepositionprocessare:1.Tempera

8、ture•HighTemperaturecancauserapidoxidationorcoking,burningthedepositsontothesurface•LowTemperaturewillimpactthesolubilityofthecontaminants2.Pressure–Ele