項(xiàng)目五:煤質(zhì)分析任務(wù)三：煤的元素分析煤中碳和氫的測(cè)定課程：工業(yè)分析中文Scenario5:QualityanalysisofcoalsTaskThree:ElementalanalysisofcoalDeterminationofcarbonandhydrogenincoalCourse:IndustrialAnalysisEglish元素分析

主要測(cè)定煤中C、H、O、N、S等元素，了解煤的元素組成。元素分析的結(jié)果是對(duì)煤進(jìn)行科學(xué)分類的主要依據(jù)。在工業(yè)上，是計(jì)算發(fā)熱量、計(jì)算熱量平衡的依據(jù)。煤中氧元素的含量不是測(cè)定，而是通過公式計(jì)算得到的：Oad=100-Cad-Had-Nad

-St,ad

-Mad-Aad

中文Elementalanalysis

ElementanalysismainlydetermineselementssuchasC,H,O,N,Sincoaltounderstandtheelementalcompositionofcoal.Theresultsofelementalanalysisarethemainbasisforscientificclassificationofcoal.Inindustry,itisthebasisforcalculatingheatgenerationandheatbalance.Thecontentofoxygenelementincoalisnotdetermined,butcalculatedthroughaformula:Oad=100-Cad-Had-Nad

-St,ad

-Mad-Aad

Eglish1、煤中碳和氫的測(cè)定原理稱取一定量的空氣干燥基煤樣，在氧氣流中燃燒，生成的水和二氧化碳分別用吸水劑和二氧化碳吸收劑吸收，由吸收劑的增重計(jì)算碳和氫的含量。中文1、TheprincipleofmeasuringcarbonandhydrogenincoalWeighacertainamountofairdriedcoalsampleandburnitinanoxygenflow.Thegeneratedwaterandcarbondioxideareabsorbedbywaterabsorbentandcarbondioxideabsorbent,respectively.Thecarbonandhydrogencontentiscalculatedbasedontheweightgainoftheabsorbent.Eglish2、測(cè)定儀器碳?xì)錅y(cè)定儀凈化系統(tǒng)：洗氣瓶、氣體干燥塔、流量計(jì)燃燒系統(tǒng)：電爐、燃燒管、燃燒舟、保溫套吸收系統(tǒng)：吸水管、吸CO2管、除氮管儀器組成中文2、measuringinstrumentHydrocarbonanalyzerPurificationsystem:gascylinderwashing,gasdryingtower,flowmeterCombustionsystem:electricfurnace,combustiontube,combustionboat,insulationsleeveAbsorptionsystem:moistureabsorptionpipe,CO2absorptionpipe,nitrogenremovalpipeCompositionofinstrumentsEglish洗氣瓶：容量250~500mL，內(nèi)裝40%KOH或NaOH，除酸性氣體氣體干燥塔：容量500mL，CaCl2和堿石灰，除水和酸性氣體流量計(jì)：量程為0~150mL/min電爐：分二節(jié)爐和三節(jié)爐，每爐都裝有熱電偶、測(cè)溫和控溫裝置燃燒管：瓷、石英、剛玉或不銹鋼制成，內(nèi)徑20~22mm，壁厚約2mm燃燒舟：瓷或石英制成，長約80mm保溫套：銅管或鐵管，長約150mm，內(nèi)徑大于燃燒管中文Washinggascylinder:capacity250-500mL,filledwith40%KOHorNaOH,toremoveacidicgasesGasdryingtower:withacapacityof500mL,filledwithCaCl2andalkalilimetoremovewaterandacidicgasesFlowmeter:measuringrangefrom0to150mL/minElectricfurnace:dividedintotwosectionsandthreesections,eachequippedwiththermocouples,temperaturemeasurementandcontroldevicesCombustiontube:madeofporcelain,quartz,corundumorstainlesssteel,withaninnerdiameterof20-22

mmandawallthicknessofapproximately2

mmBurningboat:madeofporcelainorquartz,approximately80

mmlongInsulationsleeve:Copperorirontube,approximately150

mmlong,withaninnerdiameterlargerthanthecombustiontubeEglish吸水U形管：內(nèi)裝無水氯化鈣或氯化鎂吸CO2U形管：2個(gè)，每個(gè)前2/3裝堿石棉或堿石灰，后1/3裝無水氯化鈣或氯化鎂除氮U形管：前2/3裝二氧化錳，后1/3裝無水氯化鈣或氯化鎂吸水U形管吸CO2和氮U形管中文WaterabsorbingU-shapedtube:filledwithanhydrouscalciumchlorideormagnesiumchlorideinsideCO2suctionU-shapedtubes:2pieces,eachwith2/3ofalkaliasbestosoralkalilimeinthefrontand1/3ofanhydrouscalciumchlorideormagnesiumchlorideinthebackNitrogenremovalU-shapedtube:thefirst2/3isfilledwithmanganesedioxide,andthelast1/3isfilledwithanhydrouscalciumchlorideormagnesiumchlorideWaterabsorbingU-shapedtubeCO2absorptionandnitrogenoxideremovalU-shapedEglish準(zhǔn)備步驟吸收系統(tǒng)各容器的充填和連接燃燒管的填充爐溫校正3、實(shí)驗(yàn)準(zhǔn)備凈化系統(tǒng)各容器的充填和連接2341中文PreparationstepsFillingofcombustiontubesFurnacetemperaturecorrection3、ExperimentalpreparationFillingandconnectionofvariouscontainersinthepurificationsystem2341FillingandconnectionofvariouscontainersintheabsorptionsystemEglish1-銅絲卷；2-氧化銅；3-鉻酸鉛；4-銀絲卷1-橡皮帽；2-銅絲卷；3-銅絲布圓墊；4-保溫套管；5-高錳酸銀熱解產(chǎn)物；6-瓷舟三節(jié)爐的填充二節(jié)爐的填充中文1.Copperwireroll;2-copperoxide;3-leadchromate;4-silverwireroll1.Rubbercap;2-copperwireroll;3-copperwireclothroundpad;4-insulationsleeve;5-silverpermanganatepyrolysisproduct;6-porcelainboatFillingofthreesectionstovesFillingoftwo

sectionstovesEglish4、樣品測(cè)定

一、二節(jié)800±10℃

，三節(jié)600±10℃稱0.2g粒徑小于2mm煤樣，上鋪一層Cr2O3燃燒爐升溫燃燒舟稱樣

接上系統(tǒng)，O2流速120mL/min燃燒通氧燃燒燃燒結(jié)束，將吸水管、吸CO2管稱重

稱量中文4、sampledetermination

Firstandsecondsectionfurnacesat800±10℃,andthirdsectionfurnacesat600±10℃Weigh0.2

gcoalsamplewithparticlesizelessthan2

mmandlayalayerofCr2O3ontopRaisethetemperatureofthecombustionfurnaceWeighthesampletotheburningboatConnectthesystemandcontroltheO2flowrateto120mL/minforcombustionInjectoxygenandburnAfterthecombustioniscompleted,removethesuctionpipeand

CO2suctionpipean