麝香DDHI产品提纯工艺的研究  

Study of purification of musk DDHI product

作　　者：叶青[1] 裘兆蓉[2] 钟秦[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094 [2]江苏工业学院化工系,江苏常州213016

出　　处：《日用化学工业》2005年第5期334-336,339,共4页China Surfactant Detergent & Cosmetics

基　　金：江苏省自然科学基金资助项目(BK2004035)

摘　　要：用精馏-降膜结晶耦合工艺分离麝香DDHI(1,1-二甲基-5,7-二异丙基-6-羟基茚满),考察了降膜结晶过程中冷却剂的温度、发汗过程中发汗的升温方式对产品的影响。结果表明:在回流比为4,冷却剂的温度为88℃,发汗采用逐步升温,发汗方式采用第3或第4种时,可得到质量分数大于99.5%的DDHI,单程收率可达到55%以上。与使用精馏工艺相比较,总能耗下降了34.7%。Musk DDHI was separated from a crude musk DDHI product mixture containing mainly DDHI （ 1,1 - dimethyl - 5,7- diisopmpyl - 6 - hydroxyindan） and DIPP （2, 6 - diisopmpyl phenol） by combined operation of distillation and crystallization. Effects of the temperature of the coolant used in the crystallization operation and the pattern of temperature rising in the sweating process on the product purity and recovery were examined. Experimental results showed that, under the conditions as reflux ratio = 4, the temperature of the coolant is 88 ℃, and the pattern of the temperature rising in the sweating process is in line with a moderate rate,the musk DDHI product purity of higher than 99.5 % with recovery higher than 55 % can be achieved. As compared with the distillation operation alone, the combined distillation and crystallization operation will result in energy consumption reduction of 34.7 %.

关 键 词：香料 1 1-二甲基-5 7-二异丙基-6-羟基茚满 精馏 降膜结晶 

分 类 号：TQ654[化学工程—精细化工]