CAJ | 학술논문

采用分子蒸馏技术和薄膜蒸发与精馏耦合技术分离肉桂醛和乙酸肉桂酯。在采用分子蒸馏分离肉桂醛和乙酸肉桂酯的实验研究基础上，重点阐述了薄膜蒸发与精馏耦合技术分离实验。首先研究了回流比对分离效果的影响，在确定回流比为2∶1后，分别以不同肉桂醛质量分数的混合物作为待分离物料，在不同蒸发器温度下进行了分离实验。对于具有相同肉桂醛质量分数的混合物料，薄膜蒸发与精馏耦合技术收集的馏出物中肉桂醛的含量普遍高于通过分子蒸馏技术收集的馏出物中肉桂醛的含量，实验结论表明薄膜蒸发与精馏耦合技术在分离挥发性相似物料方面具有更高的分离效率。
채용분자증류기술화박막증발여정류우합기술분리육계철화을산육계지。재채용분자증류분리육계철화을산육계지적실험연구기출상，중점천술료박막증발여정류우합기술분리실험。수선연구료회류비대분리효과적영향，재학정회류비위2∶1후，분별이불동육계철질량분수적혼합물작위대분리물료，재불동증발기온도하진행료분리실험。대우구유상동육계철질량분수적혼합물료，박막증발여정류우합기술수집적류출물중육계철적함량보편고우통과분자증류기술수집적류출물중육계철적함량，실험결론표명박막증발여정류우합기술재분리휘발성상사물료방면구유경고적분리효솔。
Separation of cinnamaldehyde and cinnamyl acetate by thin-film evaporation/molecular distillation coupled technology was studied. Based on the experimental results of separating cinnamaldehyde and cinnamyl acetate by molecular distillation,a novel separation method by thin-film evaporation/molecular distillation was investigated. For separation of cinnamaldehyde and cinnamyl acetate with the coupled method,the effect of reflux ratio was discussed firstly. Then,the mixtures with different mass fractions of cinnamaldehyde were separated at various evaporator temperatures under the optimum reflux ratio of 2∶1. The content of cinnamaldehyde in distillate obtained by thin-film evaporation/molecular distillation was generally higher than that obtained by molecular distillation only for the same mixtures,which indicated higher separation efficiency of thin-film evaporation/molecular distillation coupled technology than molecular distillation in the case of separating materials with similar volatilities.