液化石油气(LPG)

《液化石油气(LPG)》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、Chapter1SeparationProcessesIntroductionofadvancedseparationprocessSeparationprocess:Earlycivilizationsdevelopedtechniques:(1)extractmetalsfromores(2)evaporateseawatertoobtainsalt(3)refinerockasphalt(沥青）(4)distillliquorsSeparations,includingenrichment,concentration,pu

2、rification,refining,andisolation,areimportanttochemicalengineers.(forexample?)Theprocesseswhichseparatechemicalmixturesintoproductsthatdifferinchemicalcontentinchemicalindustry.MembranceAbsorptionAdsorption1.1IndustrialchemicalprocessesThemixingofchemicalstoformamixt

3、ureisaspontaneous,nturalprocessthatisaccompaniedbyanincreaseinentropyorrandomness.Theinverseprocess,theseparationofthatmixtureintoitsconsitituentchemicalspecies,isnotaspontaneousprocess.1.Modeofchemicaloperationprocess:(1)Batchwise(2)Continuous(3)SemicontinuousIndust

4、rialchemicalprocessesBasicphysicalprocessesChemicalreactionprocessesChapter1SeparationProcesses(1)Howcanwecarryouttheseparationprocess?(2)MassorEnergy?(3)Themode?(4)SeparationprocessisextendedChapter1SeparationProcessesKeyoperationsAuxiliaryoperations(1)Separationofp

5、hases(2)Heatadditionorremoval(3)Shaft-workadditionorremoval(4)Mixingordividingofstreamsorbathesofmaterial(5)Solidsagglomeration(6)SizereductionofsolidsChemicalreactionSeparationofamixtureofchemicalsNecessarytothesuccessofthekeyoperationsChangeinchemicalcomposition液化石

6、油气(LPG)、LiquefiedPetroleumGas航空燃料Methane-richgasWetnaturalgasAbsorberDemethanizer(reboiledabsorption)Absorbentrecovery(distillation)RecycleabsorbentEthaneDeethanizer(distillation)PropaneDepropanizer(distillation)Debutanizer(distillation)Deisobutanizer(distillation)No

7、rmalbutaneNaturalgasolineIsobutaneFigure1.3Processforrecoveryoflighthydrocarbonsfromcasingheadgas.Casing[‘keisig]n.包装,保护性的外套；汽车外胎；（门、窗的）框Casingheadgasn.(产于油井的)天然瓦斯油井气,套管头(天然)气Importanceoftheseparationprocess?1.Feedsneedseparate2.Productsneedseparation3.Environmentalp

8、rotectionneedseparationSeparationprocessFeedmixturetobeseparatedFigure1.6GeneralseparationprocessSeparatingagents(Energyormass)Prod