摘要
本文采用分子蒸馏、薄膜蒸发与精馏耦合技术对肉桂油主要成分的分离进行研究。系统的温度、压力和回流比对5种组分的得率和纯度的影响分别进行了研究,实验结果表明这种技术成功地用于分离肉桂油。为了进一步理解分离因素相互之间对分离效果的影响,本文选择肉桂醛为模型化合物,采用中心响应面法对肉桂醛分离的影响因素进行研究。实验结果表明:温度95℃,压力50 Pa时,肉桂醛的得率和纯度最高。实验验证的数值与响应面法模拟的数值一致,表明响应面法可以用于指导肉桂油的生产。
In this study, a triple-integration technology including molecular distillation, thin-film evaporation, and distillation was adopted to separate cinnamon oil. The effects of distillation temperature, pressure and reflux ratio on the yield and purity of five components were investigated. Statistical calculations showed that the technology is successful in the separation of cinnamon oil. In order to understand the effects of separation factors, cinnamaldehyde is selected as a model compound. Based on a central composite design, the statistic model shows that distillation temperature and pressure have significant effects on the separation of cinnamaldehyde. The optimal values for highest yield and purity are as follows： temperature 95℃ and pressure 50 Pa. The experimental results are in agreement with the predicted values, indicating a successful application of response surface methodology in the optimization of separation parameters for cinnamon oil.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2015年第9期3542-3548,共7页
CIESC Journal
基金
国家自然科学基金项目(21376279
21425627)
广东省重大科技专项项目(2012A080103005)
高校基本业务项目(14lgpy28)
广州市科技计划项目(2014J4100125)
大亚湾科技计划项目(2013A01013)~~
关键词
肉桂油
蒸馏
预测
优化
分离
cinnamon oil
distillation
prediction
optimization
separation
