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【英文标准名称】:StandardTestMethodforDeterminationofPotentialInstabilityofMiddleDistillateFuelsCausedbythePresenceofPhenalenesandPhenalenones(RapidMethodbyPortableSpectrophotometer)
【原文标准名称】:测定由于Phenalenes和Phenalenones的存在引起中间蒸馏燃料的潜在不稳定性的标准试验方法-用便携式光谱仪的快速法
【标准号】:ASTMD6748-2002a(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D02.14
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorbanceunits;burnerfuel;dieselfuel;infrared;infraredspectrophotometer;marinefuel;middledistillatefuel;potentialinstability;spectrometer;spectrophotometer;storagestability;turbinefuel;visiblespectrophotometer;Automotiveenginef
【摘要】:Storagestabilitydependsoncomplexinteractions.Itvarieswithfeedstocktypeandsource,andtheprocessingused.Therateofdegradationmaynotchangeuniformlywithtemperature.Chemicalreactionsmayleadtoachangeincolorfollowedbytheformationofsolublegumsandinsolublesediments.Insolublesedimentsmayoverloadfilters,andplugnozzlesandinjectors.Thistestmethod,whichdoesnotrequirethetestsampletobeheated,usesaportableapparatusandallowsteststobecarriedoutonsiteorinthelaboratorytogivearesultwithin35min.Thepotentialbeneficialeffectsofstabilityadditivesinfuelsmaynotberecognizedbythistestmethod.Therefore,theactualstoragestabilityofmiddledistillatefuelswithstabilityadditivesmaynotbecorrectlyindicatedbythesetestresults.Theunstablereactivecompounds(phenalenesandphenalenones)detectedbythistestmethodmaybepresentinfuelscontainingcatalyticallycrackedorstraightrunmaterialsandcanaffectthepotentialinstabilityofthefuel.Ifthistestmethodisusedbyanypartyforarapidassessmentofstability,itistheresponsibilityofpartiesconcernedtodecidewhetherornotthisprocedureyieldsmeaningfulresults.InterpretationofresultsandcorrelationwithothertestmethodsisgiveninAppendixX1.1.1Thistestmethodcoversaprocedurefortherapiddeterminationofphenalenesandphenalenonesinmiddledistillatefuels,includingmarine,automotive,heating,andgasturbinefuelsuchasthosespecifiedinSpecificationsD396,D975,D2069,andD2880.Phenalenesandphenalenonesaffectthepotentialinstabilityoffuels,leadingtofueldegradationproductsduringstorage,whichmaycauseperformanceproblems.1.2Thistestmethodisapplicabletobothdyedandundyedfuelsatallpointsinthedistributionchainfromrefinerytoend-user.Itisnotapplicabletofuelscontainingresidualoil.Theportableapparatusallowsthewholetesttobeconductedonsiteorinalaboratoryanddoesnotrequirethetestsampletobeheated.1.3Thistestmethodissuitablefortestingsampleswitharelativeabsorbanceofupto5.00absorbanceunits(AU).Note18212;Theprecisionofthetestmethodhasbeenestablishedonrelativeabsorbanceupto1.00AU.Forrelativeabsorbanceabove1.00AUtheprecisionmaynotapply.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:5P.;A4
【正文语种】:英语