熔融结晶工艺开发-孙少文

3612200812　　　　　　　　　　　　　　　CHEMICALENGINEERING(CHINA)　　　　　　　　　　　Vol.36No.12Dec.2008:(1976—),,,MDI,:13396633899,E-mail:[e-mail]。孙少文1,杨光军1,丁建生2,杜严俊1(1.,　315812;2.,　264002):,5,。,。,。:;;:TQ026.5　　　:A　　　:1005-9954(2008)12-0018-03ProcessdevelopmentofmeltingcrystallizationSUNShao-wen1,YANGGuang-jun1,DINGJian-sheng2,DUYan-jun1(1.NingboWanhuaPolyurethanesCo.Ltd.,Ningbo315812,ZhejiangProvince,China;2.YantaiWanhuaPolyurethanesCo.Ltd.,Yantai264002,ShandongProvince,China)Abstract:Fiveheuristicrulesoftheselectionofmeltingcrystallizationprocesswereestablishedviathestudyofmeltingcrystallization.Thepracticalexperienceandmethodwereintroducedforvalidatingthefeasibilityofmeltingcrystallizationprocess.Someimportantprocesstestsandmethodsofmeltingcrystallizationwerepresentedfordevelopingindustrialapplicationfromtheviewpointofpracticalexperienceinprojects.Theviewpointsforthedevelopmenttrendsofmeltingcrystallizationwereproposed.Keywords:meltingcrystallization;distillation;separation　　、,、、、、。,,,(99.99%),。。,,,、。2。,,,,。,1,,,,[1]。。1　,,。,,,3:①,,;②,,,,,“”,;③,。2　2.1　,,5,,,55,,,。2.1.1　、,,,(,%):①(95);②(95);③,(90);④(95);⑤(75);⑥,(71);⑦(60)。2.1.2　,(,%):(95);(75);、(95);(85);、(95);(90);200(75)。2.1.3　20—200℃,70%20—200℃,,,。(%):-40℃(15),-40—20℃(30),20—140℃(100),140—220℃(70),220℃(30)。2.1.4　(,%):(95);10-6()(95);99.99%(90);99.9%(85);99%(80);97%(70)。2.1.5　、,,,。1。1　Table1　Proportionfractionatdifferentfeedcomposition()/%/%99100907090—99907040906050102.2　,,,。2.2.1　1。1　Fig.1　Experimentaldeviceofcrystallization　　、、,、、。2.2.2　,;,;;,;,,,,;,,,;,,,,;;、。2.2.3　,、,,2—32。·19·孙少文等　2　Table2　Experimentaldataofcrystallization/g/%450097.060080.0120099.02130099.5240099.73　3.1　4。E1—E2-;E3-;T1—T4-;T5-;T6-;T7-;P1—P5-4　Fig.4　Fallingfilmcrystallization3.2　53。E1,2,3-;T1-;T2-;T3-;P1—P6-5　Fig.5　Staticcrystallization4　,(3),2090,,672,2,,,,———,[2—3]。【24】·20·　2008361210　2Fig.10　ComparisonofΔpfordifferentfeeding4　k-εLagrange,,:(1),,,;,。(2)。,。,。(3)1.21.4,0.4—1.5m,0.10%—0.60%,,。1.2。(4),,。:[1]　.[J].,1993,3(3):1-8.[2]　RUMEND,CHAVDARD.Gasflowdistributioninpackedcolumn[J].ChemicalEngineeringProcess,2002,41(5):385-393.[3]　,,,.[J].,2001,29(2):26-30.[4]　ZHANGLǜhong,ZHOUHaiying,LIXingang,etal.CFDanalysisofgasdistributorinpackedcolumn—pre-dictionofgasflowandeffectoftowerinternalsgeometrystructure[J].TransactionsofTianjinUniversity,2004,10(4):270-274.[5]　FERZIEGERJL,PERICM.Computationalmethodsforfluiddynamics[M].Heidelderg:Spring-Verlag,1996.[6]　,.(PFV)[J].,2004,36(1):88-92.[7]　,,,.(PFV)NavierStokes[J].,2005,26(2):222-230.[8]　,,,.[J].,2001,34(5):623-627.【20】3　[4]Table3　Comparisonbetweendistillationandmeltingcrystallization,,、()(),,100∶1—1000∶110%,,5　(1)5,。(2)。(3)。:[1]　MULLINJW.Crystallization[M].3rded.London:ButterworthHeinemann,1993:265-362.[2]　.[J].,1996,16(10):19-22.[3]　.-[J].,2000,12(6):46-49.[4]　NICHOLASPW.Separateorganicsbymeltcrystalliza-tion[J].ChemicalEngineeringProgress,1992,88(3):52-60.·24·　20083612