基本信息
标准名称: | 平炉用镁铝砖形状尺寸 |
中标分类: |
建材 >>
耐火材料 >>
粘土质、高铝质耐火 |
替代情况: | YB 894-1979 |
发布日期: | 1979-01-01 |
实施日期: | 1995-05-01 |
首发日期: | |
作废日期: | 2006-08-21 |
出版日期: | |
页数: | 16页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 建材 耐火材料 粘土质 高铝质耐火
【英文标准名称】:TestMethodforCalculatedCentaneIndexbyFourVariableEquation
【原文标准名称】:用四变量方程计算十六烷指数的试验方法
【标准号】:ANSI/ASTMD4737-2004
【标准状态】:作废
【国别】:美国
【发布日期】:2004
【实施或试行日期】:2004-12-01
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:石油产品;试验
【英文主题词】:Equations;Indices;Liquidfuels;Petroleumproducts;Testing;Variable
【摘要】:ThecalculatedCetaneIndexbyFourVariableEquationprovidesameansforestimatingtheASTMcetanenumber(TestMethodD613)ofdistillatefuelsfromdensityanddistillationrecoverytemperaturemeasurements.ThevaluecomputedfromtheequationistermedtheCalculatedCetaneIndexbyFourVariableEquation.TheCalculatedCetaneIndexbyFourVariableEquationisnotanoptionalmethodforexpressingASTMcetanenumber.ItisasupplementarytoolforestimatingcetanenumberwhenaresultbyTestMethodD613isnotavailableandifcetaneimproverisnotused.Asasupplementarytool,theCalculatedCetaneIndexbyFourVariableequationmustbeusedwithdueregardforitslimitations.ProcedureAistobeusedforSpecificationD975,GradesNo.1-DLowSulfur,No.1-D,No.2-D,andNo.4-D.ThismethodforestimatingcetanenumberwasdevelopedbyChevronResearchCo.ProcedureAisbasedonadatasetincludingarelativelysmallnumberofNo.1-Dfuels.TestMethodD4737maybelessapplicabletoNo.1-D,No.1-DLowSulfurandNo.4-DgradesthantoNo.2-Dgrade.ProcedureBistobeusedforSpecificationD975,GradeNo.2-DLowSulfur.Thetestmethod"CalculatedCetaneIndexbyFourVariableEquation"isparticularlyapplicabletoGrade1-D,GradeNo.1-DLowSulfurandGrade2-Ddieselfueloilscontainingstraight-runandcrackedstocks,andtheirblends.Itcanalsobeusedforheavierfuelswith90%recoverypointslessthan382Candforfuelscontainingderivativesfromoilsandsandoilshale.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:
【正文语种】:英语