the modeling and optimization of chemical processes using gene expression programming

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1、武汉理工大学硕士学位论文TheModelingAndOptimizationOfChemicalProcessesUsingGeneExpressionProgramming姓名：MOHAMEDHASSANSAIDOMAR申请学位级别：硕士专业：化学工程指导教师：鄢烈祥20091201AbstractGeneexpressionprogramming(GEP)isallevolutionaryalgorithmthatcombinesthecharacteristicsofgeneticalgorithmandgeneticprogrammingbyincorporatinggenotYPe

2、andphenotyperepresentationsinitschromosome．Althoughmanymethods喇8tformodelingandoptimization，nonecanbeconsidereduniversal，hencetherelSaneverend-ingsearchforalgorithmsandmethodsthatcanbeappliedinchemicalprocessmodellngandoptimization．ThemajnaimofthisthesisistoexplorethepossibilityofapplyingGEPtochemi

3、calpro-ce8smodelingandoptimization．Havingbeeninventedintherecentpast，thereISaneedtoinvestigateitsapplicabilitytovariousfields．Thisthesispresentspracticalexamplesofsteady-statemodelingofstyrene-butadienerubber(SBR)formulation，concretemⅨfo瑚ulationandanethylbenzenedehydrogenationreactorusingGEP·Italso

4、presentsre8ult8obtainedfromtheglobaloptimizationofbenchmarkproblems(bothNLPandMINLP)．InbothcasestheresultsobtainedshowthatGEPcanalsobeappliedtochemicalprocessmodelingandoptimization．ListofFigures2．1Generalevolutionarycomputationprocess．．．．．．．．．．．．．．．．．．．52．2AGPindividualwithamaximumdepthof5generate

5、dusingthegrowmethod．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．93．1AlinearGEPindividualshowingtheheadandthetail．．．．．．．．．．．133．2ExampleofaGEPindividualgeneshowingthegenotypeandthephenotype143．3Anindividualundergoingtwopointmutation．．．．．．．．．．．．．．．．．173．4Anindividualundergoinginversion．．．．．．．．．．．．．．．．．．．．．．

6、183．5Anindividualundergoing俗transposition．．．．．．．．．．．．．．．．．．194．1ExpressingofageneforGEPoptimizationwithRNC．．．．．．．．．．．254．2Tworeactorselectionproblem．．．．．．．．．．．．．．．．．．．．．．．．．375．1ActualandPredictedvaluesfortheEthylbenzenedehydrogenationreac-torexperiment．．．．．．．．．．．．’．．．．．．．．．．．．．．．．．．．．．．455．2Fitnes

7、strendsfortheEthylbenzenedehydrogenationreactorexperiment．465．3TheevolutionprocessforProblem8ofNLPOptimization．．．．．．．．．475．4TheevolutionprocessforProblem9ofMINLPOptimization．．．．．．．．48Listof乃bles2．1Analogybe