ASTM D6646-2003(2008) 颗粒和柱状活性炭硫化氢穿透容量的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminationoftheAcceleratedHydrogenSulfideBreakthroughCapacityofGranularandPelletizedActivatedCarbon
【原文标准名称】:颗粒和柱状活性炭硫化氢穿透容量的标准试验方法
【标准号】:ASTMD6646-2003(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:D28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:antisepsis;handwashing;poliovirus;skinsampling;rhinovirus;rotavirus;viralinfection;virucidalactivity;virus-eliminatingactivity
【摘要】:Thismethodcomparestheperformanceofgranularorpelletizedactivatedcarbonsusedinodorcontrolapplications,suchassewagetreatmentplants,pumpstations,etc.Themethoddeterminestherelativebreakthroughperformanceofactivatedcarbonforremovinghydrogensulfidefromahumidifiedgasstream.OtherorganiccontaminantspresentinfieldoperationsmayaffecttheH2Sbreakthroughcapacityofthecarbon;thesearenotaddressedbythistest.Thistestdoesnotsimulateactualconditionsencounteredinanodorcontrolapplication,andisthereforemeantonlytocomparethehydrogensulfidebreakthroughcapacitiesofdifferentcarbonsundertheconditionsofthelaboratorytest.Thistestdoesnotduplicateconditionsthatanadsorberwouldencounterinpracticalservice.Themasstransferzoneinthe23cmcolumnusedinthistestisproportionallymuchlargerthanthatinthetypicalbedusedinindustrialapplications.ThisdifferencefavorsacarbonthatfunctionsmorerapidlyforremovalofH2Soveracarbonwithslowerkinetics.Also,the1%H2Schallengegasconcentrationusedhereengendersasignificanttemperatureriseinthecarbonbed.Thiseffectmayalsodifferentiatebetweencarbonsinawaythatisnotreflectedintheconditionsofpracticalservice.Thisstandardaswrittenisapplicableonlytogranularandpelletizedactivatedcarbonswithmeanparticlediameterslessthan2.5mm.Applicationofthisstandardtoactivatedcarbonswithmeanparticlediameters(MPD)greaterthan2.5mmwillrequirealargerdiameteradsorptioncolumn.TheratioofcolumninsidediametertoMPDshouldbegreaterthan10inordertoavoidwalleffects.Inthesecasesitissuggestedthatbedsuperficialvelocityandcontacttimebeheldinvariantattheconditionsspecifiedinthisstandard(4.77cm/secand4.8sec).Althoughnotcoveredbythisstandard,dataobtainedfromthesetestsmaybereportedasinparagraph12alongwithadditionalinformationaboutcolumndiameter,volumeofcarbon,andvolumetricflowrateused.Forpelletizedcarbons,itisfeltthattheequivalentsphericaldiameterofthepelletisthemostsuitableparameterfordeterminingtheappropriateadsorptioncolumninsidediameter.Theequivalentsphericaldiameteriscalculatedaccordingtothefollowingequation.where:d

【中国标准分类号】:G13
【国际标准分类号】:11_080_20
【页数】:8P.;A4
【正文语种】:英语