质量与能量平衡

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1、1LiteratureReview:1.1EthyleneoxideEthyleneoxide,alsocalledoxirane,istheorganiccompoundwiththeformulaC2H4O.Thiscolorlessflammablegaswithafaintlysweetodoristhesimplestepoxide,athree-memberedringconsistingoftwocarbonandoneoxygenatom.Itiscommonlyhandiedandshippedasarefrig

2、eratedliquid.111Itisthechiefprecursortoethyleneglycolandotherhighvolumechemicalsbutisalsousedformedicalsterilization.1.2UsesEthyleneoxideisusedassterilant,althoughtheamountusedforthispurposeisminorcomparedtotheapplicationsinthechemicalindustry.Thegaskillsbacteria(andt

3、heirendospores),mold,andfungi.Itisusedtosterilizesubstancesthatwouldbedamagedbyhightemperaturetechniquessuchaspasteurization.Ethyleneoxideiswidelyusedtosterilizethemajorityofmedicalsuppliessuchasbandages,sutures,andsurgicalimplementsinatraditionalchambersterilizationm

4、ethod,whereachamberisfloodedwithamixtureofethyleneoxideandothergasesthatarelateraerated.Themorerecentgasdiffusionmethoddevelopedin1967reliesonabagthatwrapstheelementstobesterilizedandservesasamini-chamberinordertominimizegasconsumptionandmaketheprocesseconomicallyfeas

5、ibleforsmallloads・OthernamesforthisalternativemethodforsmallloadsaretheAnprolenemethod,bagsterilizationmethodormicro-dosesterilizationmethod.2Straightmatter:2.1QuestionEthyleneoxideisproducedbyoxidationofethylenewithoxygenatcirca250°Coveracatalystcomprisingmetallicsil

6、versupportedonalumina[4].Typically,promoterssuchaschloridearealsoineluded・Pressuresusedareintheregionof2MPa.Theoverallchemicalequationis:ri7H2C=CH2+6O2——6C2H4O+2CO2+2H2OAsidereactionisreactatthesametime:r2C2H4+3O2——-2CO2+2H2OThereisareactor.Theflowoffeedmaterialis1000

7、mole/handthereis10%Ethylenewithmolefractioninthefeedmaterial.TheconversionrateofEthyleneis25%.TherateofthechoiceofEthylenegenerateproductis80%.Pleasecalculatecomporientsandflowofthematerialinthereactor'soutput.Solution:ComponentC2H4o2n2C2H4OCO2H2ONumber123456Figure1Nu

8、mberofthecomponentFigure2SimplediagramforcalculationSymbolMean泊gFAmountofSubstaneeoftheflow.XMolefractionVThestoichiometricn