脱臭馏出物的固体酸催化酯化反应工艺研究  

Esterification of plant oils deodorizer distillate by solid acid catalyst

作　　者：杨亦文[1] 钱国平[1] 苏云[1] 任其龙[1] 吴平东[1] 

机构地区：[1]浙江大学二次资源化工国家专业实验室,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2002年第6期698-701,共4页Journal of Zhejiang University：Engineering Science

基　　金：浙江省科技厅资助项目(001103231).

摘　　要：酯化是从脱臭馏出物中提取天然维生素E通常采用的预处理方法.以强酸性离子交换树脂作为酯化催化剂,在固定床中将脱臭馏出物进行甲酯化反应,将脱臭馏出物的酸价ρ(KOH)从145降到3mg/g以下.较系统地研究了温度、进料流量、进料配比、原料水含量以及接触时间等因素对固定床甲酯化反应的影响,并考察了催化剂的稳定性.Esterification is a perfect pretreat process for extracting natural vitamin E from plant oils deodorizer distillate (PODD). Fatty acids in PODD can be esterified with methanol in a fixed bed filled with solid acid catalyst, acidic ionexchange resin, reducing the acid value of the material ρ(KOH)from about 145 to less than 3 mg/g. The effect of temperature, flow rate, contact time, ratio of methanol to fatty acids, water content in raw material, etc, on the reaction; and the stability of the ionexchange resin were studied.

关 键 词：酯化反应 脱臭馏出物 固体酸催化剂 天然维生素E 提取工艺 油脂副产物 

分 类 号：TQ466.5[化学工程—制药化工] TQ64