摘要
采用溶剂萃取法分离和精制改良硫酸法由稻草、麦杆等制取糠醛 ,比较了不同有机溶剂的萃取效果和物性 ,试验结果表明 ,糠醛的分配系数顺序为 :氯仿 >1,2 二氯乙烷 >三氯乙烯 >乙酸乙脂 >四氯化碳。选择了 3级错流萃取流程和设备。
The extraction technology has been used to separate furfural produced from straw with the improved sulfuric acid catalytic method.The extractive effect and physical character of different organic solvents have been compared.From the operational lines we will know that the order of extractive rate is:trichlormethane>1,2 dichloroethane>trichloroethylene>dichloromethane>ethyl acetate>carbon tetrachloride.It has selected the extracting flow and equipment of three grades alternate flow.
出处
《化学工业与工程》
CAS
2000年第5期303-306,共4页
Chemical Industry and Engineering
基金
湖南省科技攻关项目! (0 1942 5 7)
关键词
改良硫酸法
氯仿
萃取
分离
呋喃甲醛
improved sulfuric acid catalytic method
furfural
trichlormethane
extraction by solvent
