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【英文标准名称】:StandardTestMethodforDeterminationofHydrogenSulfideinFuelOilsbyRapidLiquidPhaseExtraction
【原文标准名称】:快速液相抽堤法测定燃料油中的硫化氢的标准试验方法
【标准号】:ASTMD7621-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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.E0.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:blendstocks;bunkers;H2S;hydrogensulfide;liquidphase;marine;residualfueloil;Extractionmethods;Fueloils;Hydrogensulfide;Liquidphasespectra;Residualfueloils
【摘要】:Excessivelevelsofhydrogensulfideinthevaporphaseaboveresidualfueloilsinstoragetankscanresultinhealthhazards,violationoflocaloccupationalhealthandsafetyregulations,andpubliccomplaint.AnadditionalconcerniscorrosionthatcanbecausedbythepresenceofH2Sduringrefiningorotheractivities.ControlmeasurestomaintainsafelevelsofH2SrequireaprecisemethodforthemeasurementofpotentiallyhazardouslevelsofH2Sinfueloils.(Warning8212;Safety.Hydrogensulfide(H2S)isaverydangerous,toxic,explosiveandflammable,colorlessandtransparentgaswhichcanbefoundincrudeoilandcanbeformedduringthemanufactureofthefuelattherefineryandcanbereleasedduringhandling,storage,anddistribution.Atverylowconcentrations,thegashasthecharacteristicsmellofrotteneggs.However,athigherconcentrations,itcausesalossofsmell,headaches,anddizziness,andatveryhighconcentrations,itcausesinstantaneousdeath.Itisstronglyrecommendedthatpersonnelinvolvedinthetestingforhydrogensulfideareawareofthehazardsofvapor-phaseH2Sandhaveinplaceappropriateprocessesandprocedurestomanagetheriskofexposure.)Thistestmethodwasdevelopedsorefiners,fuelterminaloperators,andindependenttestinglaboratorypersonnelcanrapidlyandpreciselymeasuretheamountofH2Sinresidualfueloilsanddistillateblendstocks,withaminimumoftraining,inawiderangeoflocations.TestMethodD5705providesasimpleandconsistentfieldtestmethodfortherapiddeterminationofH2Sintheresidualfueloilsvaporphase.HoweveritdoesnotnecessarilysimulatethevaporphaseH2SconcentrationofafuelstoragetanknordoesitprovideanyindicationoftheliquidphaseH2Sconcentration.TestMethodD6021doesmeasuretheH2SconcentrationofH2Sintheliquidphase,howeveritrequiresalaboratoryandaskilledoperatortoperformthecomplexprocedureandcalculations,anddoesnotofferanyreproducibilitydata.Thistestmethod(D7621)offersa15minautomatedtest,simplicity,fullprecision,andadegreeofportability.H2Sconcentrationsintheliquidandvaporphaseattempttoreachequilibriuminastaticsystem.However,thisequilibriumandtherelatedliquidandvaporconcentrationscanvarygreatlydependingontemperatureandthechemicalcompositionoftheliquidphase.Theequilibriumofthevaporphaseisdisruptedthemomentaventoraccesspointisopenedtocollectasample.1.1Thistestmethodcoversaprocedureforthedeterminationofthehydrogensulfide(H2S)contentoffueloilssuchasmarineresidualfuelsandblendstocks,intherange0.40to15.0mg/kgasmeasuredintheliquidphase.1.2Thistestmethodisapplicableformaterialswithaviscosityupto3000mm2s-1at50x00B0;C.Note18212;ASTMspecificationfuelsfallingwithinthescopeofthistestmethodare:SpecificationD396GradeNos5(light),5(heavy)and6.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandheal......
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:7P.;A4
【正文语种】:英语