ASTM D7582-2010 运用宏观热重分析法对煤和焦炭进行成分分析的标准试验方法

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【英文标准名称】:StandardTestMethodsforProximateAnalysisofCoalandCokebyMacroThermogravimetricAnalysis
【原文标准名称】:运用宏观热重分析法对煤和焦炭进行成分分析的标准试验方法
【标准号】:ASTMD7582-2010
【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】:D05.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ash;macrothermogravimetricanalysis,macro-TGA;moisture;proximateanalysis;volatilematter;Coal/cokeproducts;Proximateanalysis--coal/coke;Thermogravimetricanalysis(TGA);Volatilemattercontent--coal/coke
【摘要】:Moisture,asdeterminedbythisinstrumentaltestmethod,isusedforcalculatingotheranalyticalresultstoadrybasisusingproceduresinPracticeD3180.Moisturecanbeusedinconjunctionwiththeair-drymoisturelossdeterminedbyTestMethodD3302todeterminetotalmoistureincoal.Totalmoistureisusedforcalculatingotheranalyticalresultstoanas-receivedbasisusingPracticeD3180.Ashyieldistheresidueremainingafterheatingthecoalandcokesamples(seeNote1).Note18212;Theashobtaineddiffersincompositionandamountfromthemineralconstituentspresentintheoriginalcoal.Combustioncausesanexpulsionofallwater,thelossofcarbondioxidefromcarbonates,theconversionofironpyriteintoironoxidesandsulfuroxides,andotherchemicalreactions.Ashyield,asdeterminedbythistestmethod,candifferfromtheamountofashproducedinfurnaceoperationsorothercombustionsystemsbecausecombustionconditionsinfluencethechemistryandamountofash.Ashyieldisused,(1)asaparameterforevaluatingsamplingproceduresandcoalcleaningprocesses,(2)intheultimateanalysiscalculationofoxygenbydifferenceusingPracticeD3176,(3)incalculationsincludingmaterialbalance,reactivityandyieldsofproductsrelevanttocoalconversionprocessessuchasgasificationandliquefaction,(4)incalculationstoestimatetheloadingonelectrostaticprecipitatorsandontheflyashandbottomashdisposalsystemsaswellaserosionratesonboilersystems.Volatilematteryield,whendeterminedashereindescribed,maybeusedto(1)indicatecokeyieldoncarbonization,(2)providethebasisforpurchasingandselling,or(3)establishcombustioncharacteristics.Fixedcarbonisacalculatedvalue.Itisthedifferencebetween100andthesumofthepercentmoisture,ash,andvolatilematter.Allpercentsshallbeonthesamemoisturereferencebase.Moisture,ash,andvolatilematterarethreeoftheprincipalparametersusedforassessingthequalityofcoal.1.1Theseinstrumentaltestmethodscoverthedeterminationofmoisture,volatilematter,andash,andthecalculationoffixedcarbonintheanalysisofcoalandcokesamplespreparedinaccordancewithPracticeD2013andPracticeD346.1.2Theseinstrumentaltestmethodsarenotapplicabletothermogravimetricanalyzersusingmicrogramsizesamples.1.3TestMethodsD3173,D3174,andD3175shallbeconsideredtherefereetestmethods.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5