陽離子交換樹脂催化合成乙酸甲酯動(dòng)力學(xué)研究.pdf

1、譽(yù)天洋大謦碩士學(xué)位論文_■■■■嘎■爿隨鼉灌■渭■■●li學(xué)科專業(yè)：化學(xué)工程作者姓名：王卉指導(dǎo)教師：許春建副研究員T滂1肖T1匝巒吐lI空pr‘L2005年1月ABSTRACTEsterificationcatalyzedbyfineparticlesofionexchangeresinisagoodmethodforthesynthesisofmethylacetatebyMethanolandAceticacidItholdsthe

2、advantagesofhighmassandheattransferratesandahighselectionofproductInthispaperthekineticsofesterificationcatalyzedbyfineparticlesofionexchangeresinwasstudiedTheeffectofstirspeedandapertureofionexchangeresinontheconversion

3、ratioWasexperimentallyinvestigatedTheexperimentresultsindicatedthatwhenthestirspeedwashigherthan500r／min，theinfluenceofexternaldiffusioncouldbeeliminatedWhentheapertureofion—exchangeresinislessthanO6mmtheinfluenceofintem

4、aldiffusioncouldalsobeeliminatedWhenthecrudecatalystwithaperturerangesfrom06—125mmwasused，theconversionratiodeclinedevidentlyMethylacetatewaspreparedinabatchmodereactorbymethanolwithaceticacidcatalyzedbyamacroporousion—e

5、xchangeresin，undertheconditionsthatinternalandextemaldiffusionscouldbeeliminatedApseudohomogeneousphasekineticmodelWasdevelopedtodescribetheprocessandtheparametersofthemodelweregainedbyfittingthepredictedvaluewitlltheexp

6、erimentaldataTheeffectoftemperature，catalystloading，moleratioofreactantsonbatchreactionrateWastakenintoaccountinthekineticmodelTherelationshipbetweenthereactionrateandtemperaturewasdescribedbytheArrhuniusequationandtheac

7、tivationenergyofthepositivereactionEwas5031kJ／m01ThereactionrateincreasedlinearlywiththecatalystloadingintheexperimentalrangeThesimulationofesterificationbyusingAspenPluscooperatedwiththekineticmodelshowsthatthecalculate