间歇式减压精馏分离柑青醛和新铃兰醛  

Separation of Myrac aldehyde and Lyral by batch vacuum distillation

作　　者：吴方棣[1] 林丹萍 杨自涛 谢文菊[1] WU Fang-Di;LIN Dan-Ping;YANG Zi-Tao;XIE Wen-Ju(Wuyi University, Fujian Key Laboratory of Eco-Industrial Green Technology, Wuyishan 354300,Fujian,China)

机构地区：[1]武夷学院福建省生态产业绿色技术重点实验室

出　　处：《黑龙江大学工程学报》2019年第3期53-58,共6页Journal of Engineering of Heilongjiang University

基　　金：福建省教育厅科技产学研项目(JA15508)

摘　　要：采用间歇式减压精馏分离的方法,实现了对柑青醛和新铃兰醛这一热敏性物质的分离。探讨了塔顶压力、塔顶和塔釜温度、全回流时间、投料比、回流比等对分离效果的影响。结果表明:在真空度0.099MPa下,塔顶温度157.0~165.0℃,塔釜温度200.0~210.0℃,全回流时间为1.0h,投料比例为3∶2,回流比为3∶1时,塔顶产品柑青醛的平均质量分数为99.28%,塔釜产品新铃兰醛的平均质量分数为92.36%,柑青醛的收率为83.63%,新铃兰醛的收率为80.84%。In this paper, the heat-sensitive material of Myrac aldehyde and Lyral were separated by batch vacuum distillation. The effects of tower top pressure, temperature of tower top and bottom, total reflux time, feed ratio (the volume ratio of Myrac aldehyde and Lyral) and reflux ratio on vacuum distillation process were investigated. The experimental results indicated that the optimized distillation conditions were as follows: at the maximum vacuum of 0.099 MPa, temperature of tower top ranged from157.0 ℃ to165.0 ℃, temperature of tower bottom ranged from200.0 ℃ to210.0 ℃, the total reflux time was1.0 h, the feed ratio was 3∶2 and the reflux ratio was 3∶1. At the above conditions, the average mass fraction of Myrac aldehyde in the tower top was 99.28%, yield of Myrac aldehyde was 83.63%, the average mass fraction of Lyral in the tower bottom was 92.36%, yield of Lyral was 80.84%.

关 键 词：柑青醛 新铃兰醛 间歇减压精馏 

分 类 号：TQ655[化学工程—精细化工]