环路反应装置制备硬脂酸三乙醇胺酯的新工艺  

Synthesis of Triethanolamine Stearate by Loop Reaction Process

作　　者：耿涛[1,2] 李秋小[1,2] 姜亚洁[1] 王伟[1] 

机构地区：[1]中国日用化学工业研究院,山西太原030001 [2]太原理工大学化学化工学院,山西太原030024

出　　处：《石油化工》2009年第10期1122-1126,共5页Petrochemical Technology

基　　金：国家"十一五"科技支撑项目(2007BAE52B00);山西省青年基金项目(2008021017)

摘　　要：分别采用环路反应工艺和釜式搅拌工艺,以硬脂酸和三乙醇胺为原料,在酸催化剂的作用下合成了硬脂酸三乙醇胺酯;从反应进程、产品色泽、能源及氮气消耗、废物排放、产品质量等方面对两种工艺进行了对比实验。实验结果表明,在反应温度190℃、n(硬脂酸):n(三乙醇胺)=2、催化剂用量(相对于反应原料的质量分数)0.1%的条件下,与釜式搅拌工艺相比,采用环路反应工艺得到合格硬脂酸三乙醇胺酯所需的反应时间短,产品色泽好,能源及氮气消耗量低,反应过程对环境无污染,产品中单、双酯的含量高。环路反应工艺可完全替代釜式搅拌工艺用于合成硬脂酸三乙醇胺脂。Triethanolamine stearate （EA） was prepared separately in a loop reaction system and in a stirred tank reactor system by esterification of stearic acid with triethanolamine with an acid catalyst. The performances of esterification in the two reaction systems were compared in respect of reaction temperature, product color and quality, energy and nitrogen consumptions and waste release. The reaction conditions in two reaction systems were kept same, which were： reaction temperature 190 ℃, mole ratio of stearic acid to triethanolamine 2 and catalyst dosage 0. 1% （based on mass of raw materials）. In loop reaction system, to achieve product EA of required specifications, shorter reaction time, less consumptions of energy and nitrogen were needed. The color of product was lighter and contents of mono- and di-ester in EA were higher. No pollution was released. The loop reaction system is preferred in producing EA.

关 键 词：环路反应工艺 搅拌式反应釜 硬脂酸 三乙醇胺 硬脂酸三乙醇胺酯 

分 类 号：TQ423.12[化学工程]