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1、CorrespondingSolutionsforChemicalReactionEngineeringCHAPTER1OVERVIEWOFCHEMICALREACTIONENGINEERING1CHAPTER2KINETICSOFHOMOGENEOUSREACTIONS3CHAPTER3INTERPRETATIONOFBATCHREACTORDATA7CHAPTER4INTRODUCTIONTOREACTORDESIGN19CHAPTER5IDEALREACTORFORASINGLEREACTOR22CHA
2、PTER6DESIGNFORSINGLEREACTIONS26CHAPTER10CHOOSINGTHERIGHTKINDOFREACTOR32CHAPTER11BASICSOFNON-IDEALFLOW34CHAPTER18SOLIDCATALYZEDREACTIONS4343Chapter1OverviewofChemicalReactionEngineering1.1Municipalwastewatertreatmentplant.Consideramunicipalwatertreatmentplan
3、tforasmallcommunity(Fig.P1.1).Wastewater,32000m3/day,flowsthroughthetreatmentplantwithameanresidencetimeof8hr,airisbubbledthroughthetanks,andmicrobesinthetankattackandbreakdowntheorganicmaterial(organicwaste)+O2CO2+H2OAtypicalenteringfeedhasaBOD(biologicalo
4、xygendemand)of200mgO2/liter,whiletheeffluenthasamegligibleBOD.Findtherateofreaction,ordecreaseinBODinthetreatmenttanks.Wastewater32,000m3/dayWastewaterTreatmentplantCleanwater32,000m3/day200mgO2needed/literMeanresidencetime=8hrZeroO2neededFigureP1.1Solution
5、:1.2Coalburningelectricalpowerstation.Largecentralpowerstations(about1000MWelectrical)usingfluidingbedcombustorsmaybebuiltsomeday(seeFig.P1.2).Thesegiantswouldbefed240tonsofcoal/hr(90%C,10%H2),50%ofwhichwouldburnwithinthebatteryofprimaryfluidizedbeds,theoth
6、er50%elsewhereinthesystem.Onesuggesteddesignwoulduseabatteryof10fluidizedbeds,each20mlong,4mwide,andcontainingsolidstoadepthof1m.Findtherateofreactionwithinthebeds,basedontheoxygenused.43Solution:43Chapter2KineticsofHomogeneousReactions2.1Areactionhasthesto
7、ichiometricequationA+B=2R.Whatistheorderofreaction?Solution:Becausewedon’tknowwhetheritisanelementaryreactionornot,wecan’ttelltheindexofthereaction.2.2Giventhereaction2NO2+1/2O2=N2O5,whatistherelationbetweentheratesofformationanddisappearanceofthethreereact
8、ioncomponents?Solution:2.3Areactionwithstoichiometricequation0.5A+B=R+0.5Shasthefollowingrateexpression-rA=2C0.5ACBWhatistherateexpressionforthisreactionifthestoichiometricequationiswrittenasA+2B=2R+SS