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时间:2020-04-18
《复合萃取剂提取林可霉素机理及填料萃取塔中试研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、化工进展2014年第33卷第1期CHEMICALINDUSTRYANDENGINEERINGPROGRESS·247·复合萃取剂提取林可霉素机理及填料萃取塔中试研究高灿,常宏委,陆莹莹,申龙,高瑞昶(天津大学化工学院,天津300072)摘要:以中试填料萃取塔为设备研究了复合萃取剂(正辛醇和煤油)萃取林可霉素的宏观特性及传质强化。使用斜率法确定萃合物的结构和反应平衡常数以指导改进设备和强化传质;为了提高林可霉素萃取效果,考察了溶液pH值、相比(W/O)、填料类型、分布盘的使用等因素对提取林可霉素效果的影响。结果表明:以正辛醇为萃取剂萃取林可霉素的过程中,反应平衡常数为0.072;复合萃取剂中正辛
2、醇最佳含量为0.8(体积分数);萃取林可霉素的最佳pH值为l0bl1,最佳相比(W/O)为3;规整填料和散装填料萃取效果有限,分布盘可以大大加强传质,同时加装分布盘的填料萃取塔的单位体积处理量是混合澄清槽的l2.8倍,萃取剂循环量大大减少。研究结果对复合萃取剂的萃取机理和填料萃取塔提取林可霉素的实际应用具有一定指导意义。关键词:林可霉素;宏观特性;分布盘;填料萃取塔中图分类号:rQ028文献标志码:A文章编号:1000—6613(2014)01—0247~06DoI:10.3969~.issn.1000—6613.2014.01.045StudyofextractingLincomycinwi
3、thcompositeextractantandthepilottestonpackedextractioncolumnGAOCan,CHANGHongwei,LUFingying,SHENLong,GAORuichang(SchoolofChemicalEngineeringandTechnology,TianjinUniversity,Tianjin300072,China)Abstract:ThemacroscopicpropertyandmasstransferenhancementofextractingLincomycinwithcompositeextractant(n-octa
4、nolandkerosene)inpackedextractioncolumnwasstudiedinthispaper.Thestructureofextractedcomplexandreactionequilibriumconstantweredeterminedbytheslopemethod,whichcouldcontributetotheimprovementofequipmentandmasstransferenhancement.Inordertoimprovetheextractioneciency,factorssuchaspHofthesolution,VOlumera
5、tioofthewaterphasetotheorganicphase,packingtype,anddistributionplateswereconsidered.TheresultsshowedthatintheextractionprocessofLincomycinwithn-octanol,thereactionequilibriumconstantwas0.072,theoptimumcontentofn-octanolincompositeextractantwas0.8rvolumefraction),theoptimumpHoftheextractionsolutionra
6、ngedfrom10tol1,theoptimumvolumeratioofthewaterphasetotheorganicphasewas3.Limitedextractione伍ciencywasfoundtopresentinbothstructuredpackingandbulkpackingextractioncolumn.Distributionplatescouldsignificantlyenhancethemasstransferinpackedextractioncolumn,withamaximumunitvolumetreatmentcapacityof12.8tim
7、escomparedtotheextractiontank,andthecirculationvolumeofextractantcouldbegreatlyreduced.TheresultscanbeusedforguidingpracticalapplicationofpackedextractioncolumninLincomycinextraction.Keywords:lincomyc
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