ThechemicalprocessesinchemicallyreactingflowsThechemicalprocessesinchemicallyreactingflowsproceedbyproceedbyaseriesofelementaryreactionsaseriesofelementaryreactions,ratherthan,ratherthanbyasinglestep.byasinglestep.13ReactionMechanismsThecollectionofelementaryreactionsThecollectionofelementaryreactionsdefiningthedefiningthechemicalprocessiscalledchemicalprocessiscalledthemechanismofthereactionthemechanismofthereaction..WhenrateconstantsareassignedtoeachoftheWhenrateconstantsareassignedtoeachoftheelementarysteps,elementarysteps,achemicalkineticmodelachemicalkineticmodeltodescribethetodescribethechemistryinreactingflowmodeling.chemistryinreactingflowmodeling.ThechemicalkineticmodeloffersaThechemicalkineticmodeloffersacomprehensivecomprehensivedescriptiondescriptionofthechemistry,butitrequiresaofthechemistry,butitrequiresalargerlargercomputationaleffortcomputationaleffortthansimplifiedchemicalmodels.thansimplifiedchemicalmodels.ThemajoremphasisisonThemajoremphasisisondetailedchemicalkineticdetailedchemicalkineticmodelsmodels.Specificallythefollowingissues:.Specificallythefollowingissues:1)Whatarethe1)Whatarethedrivingforcesdrivingforcesforgas-phasechemicalforgas-phasechemicalprocesses?processes?2)Whatarethe2)Whatarethegeneralcharacteristicsgeneralcharacteristicsandandsimilaritiessimilaritiesofdifferentreactionsystem?ofdifferentreactionsystem?3)Howisareactionmechanism3)Howisareactionmechanismdevelopeddeveloped??4)Howdoesoneobtainappropriate4)Howdoesoneobtainappropriatethermodynamicthermodynamicdatadataandandrate-specificinformationrate-specificinformation??5)Howisareactionmechanism5)Howisareactionmechanismvalidatedvalidated??6)Howisareactionmechanism6)Howisareactionmechanismsimplifiedsimplified??13.1ModelsforchemistryThereactionsinchemicallyreactingflowsThereactionsinchemicallyreactingflowsmayberepresentedatmayberepresentedatdifferentlevelsofdifferentlevelsofcomplexitycomplexity..a)Infinitelyfasta)Infinitelyfastreactionsreactionsb)Chemicalb)Chemicalequilibriumequilibr...
