【英文标准名称】:StandardTestMethodforDeterminationofCarbonResidue(MicroMethod)
【原文标准名称】:碳残留物的测定用标准试验方法(微量法)
【标准号】:ASTMD4530-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D02.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:碳;润滑剂;石油产品;残留物;测试
【英文主题词】:carbonresidue;carbonresidue(micromethod);dieselfuel;lubricatingoil;petroleumproducts
【摘要】:Thecarbonresiduevalueofthevariouspetroleummaterialsservesasanapproximationofthetendencyofthematerialtoformcarbonaceoustypedepositsunderdegradationconditionssimilartothoseusedinthetestmethod,andcanbeusefulasaguideinmanufactureofcertainstocks.However,careneedstobeexercisedininterpretingtheresults.Thistestmethodoffersadvantagesofbettercontroloftestconditions,smallersamples,andlessoperatorattentioncomparedtoTestMethodD189,towhichitisequivalent.Uptotwelvesamplesmayberunsimultaneously,includingacontrolsamplewhenthevialholdershowninFig.1isusedexclusivelyforsampleanalysis.1.1Thistestmethodcoversthedeterminationoftheamountofcarbonresidue(seeNote1)formedafterevaporationandpyrolysisofpetroleummaterialsundercertainconditionsandisintendedtoprovidesomeindicationoftherelativecokeformingtendencyofsuchmaterials.1.2ThetestresultsareequivalenttotheConradsonCarbonResiduetest(seeTestMethodD189).Thisprocedureisamodificationoftheoriginalmethodandapparatusforcarbonresidueofpetroleummaterials,whereithasbeendemonstratedthatthermogravimetryisanotherapplicabletechnique.However,itistheresponsibilityoftheoperatortoestablishoperatingconditionstoobtainequivalentresultswhenusingthermogravimetry.1.3Thistestmethodisapplicabletopetroleumproductsthatpartiallydecomposeondistillationatatmosphericpressureandwastestedforcarbonresiduevaluesof0.10to30%(m/m).Samplesexpectedtobebelow0.10weight%(m/m)residueshouldbedistilledtoremove90%(V/V)oftheflaskcharge(seeSection).The10%bottomsremainingisthentestedforcarbonresiduebythistestmethod.1.4Ash-formingconstituents,asdefinedbyTestMethodD482,ornon-volatileadditivespresentinthesamplewilladdtothecarbonresiduevalueandbeincludedaspartofthetotalcarbonresiduevaluereported.1.5Alsoindieselfuel,thepresenceofalkylnitrates,suchasamylnitrate,hexylnitrate,oroctylnitrate,causesahighercarbonresiduevaluethanobservedinuntreatedfuel,whichmayleadtoerroneousconclusionsastothecoke-formingpropensityofthefuel.ThepresenceofalkylnitrateinthefuelmaybedetectedbyTestMethodD4046.1.6si-value;1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetypracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,see8.2.3and8.4.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:7P.;A4
【正文语种】: