油脂乙氧基化物中二噁烷副产物的脱除工艺研究  

Study on the Removal Process of Dioxane By-Product from Oil Ethoxylates

作　　者：封益民 汪传新 张明慧 FENG Yimin;WANG Chuanxin;ZHANG Minghui(Sinolight Surfactants Technology Co.,Ltd.,Shanghai 201512,China)

机构地区：[1]中轻日化科技有限公司,上海201512

出　　处：《中国洗涤用品工业》2024年第9期13-18,共6页China Cleaning Industry

基　　金：中轻日化科技有限公司“揭榜挂帅”项目(项目编号:423002)。

摘　　要：通过加水共沸蒸发的方式对油脂乙氧基化物NOE产品中的二噁烷进行了脱除。考察了起始真空度和持续时间、温度、加水量、分次加水等工艺条件对脱除过程物料状态和脱除效果的影响。结果表明:加水量3.0%,脱除温度85℃,起始阶段控制真空度为75 kPa,持续15 min,后将真空提高到98 kPa,持续15 min,可将NOE的二噁烷含量从391 ppm脱除至26 ppm;若将3.0%的加水量分成2次加入(每次加水量1.5%)或3次加入(每次加水量1.0%)进行分次脱除,可进一步降低二噁烷的残留量,分别至15 ppm和8 ppm。The removal of dioxane from the oil ethoxylates NOE product was carried out by azeotropic evaporation with water.The effects of process conditions such as initial vacuum degree and duration,temperature,water addition amount,and staged water addition on the material state during the removal process and removal efficiency were investigated.And results showed that:dioxane content of NOE can be removed from 391 ppm to 26 ppm with the condition of 3.0%water additive amount,removal temperature 85℃,initial vacuum degree controlled at 75 kPa for 15 mins,then increase the vacuum to 98 kPa for 15 mins.If the 3.0%water additive amount is divided into 2 additions(1.5%each time)or 3 additions(1.0%each time)for removal,the residual amount of dioxane can be further reduced to 15 ppm and 8 ppm,respectively.

关 键 词：二噁烷 油脂乙氧基化物 共沸蒸发 

分 类 号：TQ423.2[化学工程]