倾斜筛板多级逆流结晶器理论与实验分析

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1、ABSTRACTEXPERIMENTALANDTHEORETICALINVESTIGATIONOFTHEMUl月ISTAGECOUNTERCURRENTMEl月CRYSTALLIZERWITHINCLINEDSIEVEPLATESMeltcrystallizationisagreenteclnologyforseparatingandpurifyingorganiccompounds；itnotonlycanproducehighpurityproduetsbutalsocanseparateis

2、omersandheat-sensitive0rgamccompoundswhichcan7tbe．●一●‘’1separatedeconomicallybyothermethods．Meanwhile，amongcrystallizationdevices，crystallizeriswidelyusedbecauseitrealizeswashing，recrystallizationandsweatingmechanismsatthesametimeinonesinglepieceofequ

3、ipment．Therefore，thedevelopmentofanewcrystallizationtechnologywithindependentintellectualpropertyrightsandthedesignofacontinuccolta／stallizer‘‘‘。’’’4。eieney,have‘90rtantcontinuouscolumncrystallizerwlthmgnettleleney,naveaveryimportantsignificance．Inthi

4、spaper,anewmultistagecountercurrentmeltcrystallizerwithsieveplateswasproposedcombinedwiththeadvantageoftheTNOcolumncrystallizerandtheinclinedcolumncrystallizer．Withthenaphthalene—indenesolidsolutionsystem，thepurificationprocessoforganicmaterialsinthen

5、ewmultistagecountercurrentmeltcrystallizerwithsieveplatesundertotalrefluxwasinvestigated．Twooftheinfluencingfactorsontheseparationand北京化工大学硕士论文purificationperformanceinthenewmultistagecountercurrentmeltcrystallizerwithsieveplateswerecrystalsettlingvel

6、ocityandcrystalbrokencapabilitieswhichwerecontrolledbystirringspeed，thesieveplates，theangleofthesieveplates，thediameteroftheporous，particlesedimentationarea，andthenumberofplates．Theresultsofthisstudyshowthattheoptimumstirringspeedwasdeterminedtobe20rp

7、m，sieveplatescanobviouslyincreasetheseparationandpurificationeffect，theoptimumangleofthesieveplateswasdeterminedtobe45。，theoptimumdiameteroftheporouswasdeterminedtobe8mnl，theoptimumparticlesedimentationareawasdeterminedtobe0．5r，2platesinthecrystallize

8、rshownthebest．Duringcontinuousoperation，theexperimentisthebiggestimpactoftherefluxratio，refluxratioincrease，improveproductpurity,butproductionisreduced，onthecontrary,refluxratiodecreases，andtheoutputofproductsincreases，butdecreasesthepurity．In