助滤剂特性的理论分析与研究

助滤剂特性的理论分析与研究Chinese.).Ch。二En&,11(3)249一252(2003)TheoreticalStudyandAnalysisonPropertiesofFilterAidsTANWei(谭蔚)‘，LUShuqun(V淑群)，WUYuntao(伍云涛)andZHUQixin(朱企新)SchoolofChemicalEngineering,TianjinUniversity,Tian,jin300072,ChinaAbstractPressurefiltrationandfilteraidsshouldbeadoptedinfiltrationofhigh-viscositymoltenchemicalfibercontainingforeignmaterialsandgelparticles.Theoreticalanalysisandargumemationson讯anneraofassistedfiltrationandspecificrequirementsoffilteraidsareperformed.Measurementandcomparisononpropertiesofseveralfilteraidsarealsocarriedout,conclusionsandsuggestionsareputforwardKeywordsfilteraid,specificcakeresistance,compressibleindexp/\1INTRODUCTIONSomeso-calleddifficult-to-separatematerials场filtrationmethodareusuallymetinindustriesofchemistry,petro-chemistry,pharmacy,beverageandwineetc.Forexample,thesolidcontentintheslurryistoolowtobecoacervationedorflocculated,thesolidparticlesaretoosmalltoberemoved饰conventionalfiltrationmedium,oriftheslurryisofhigh-viscosity(suchasdistillersgrai