喷射式环路反应器制备中碳链三甘油酯的新工艺  

Synthesis of medium chain glycerides by jet loop reaction process

作　　者：史修启[1] 孙永强[1] 杨卉艳[1] 张勇[1] 

机构地区：[1]中国日用化学工业研究院,山西太原030001

出　　处：《现代化工》2012年第10期80-83,共4页Modern Chemical Industry

摘　　要：分别采用喷射式环路反应器工艺和搅拌釜式工艺,以辛葵酸和甘油为原料,在碱性催化剂作用下合成了中碳链三甘油酯,从反应进程、产品色泽、能源及氮气消耗、产品后处理、产品质量等方面对两种生产工艺进行了比较。实验结果表明,在反应温度250℃,n(辛葵酸)∶n(甘油)=3.2∶1,催化剂用量为辛葵酸质量的0.25%条件下,与搅拌釜式反应工艺相比,采用喷射式环路反应器反应工艺具有反应时间短、产品色泽好、能源及氮气消耗量低、反应过程对环境无污染、产品羟值低等优点,喷射式环路反应器工艺可完全替代搅拌釜式工艺用于制备中碳链三甘油酯。Medium chain glyceride （MCT） is prepared separately in a jet loop reaction process and in a stirred tank reactor system by esterification of C8-10 fatty acid and glycerol with a base catalyst. The performances of esterification in the two reaction systems are compared in respect of reaction rate, product color and quality, energy and nitrogen consumptions and post-treatment. At the following reaction conditions, 250℃ of reaction temperature, 3.2 ： 1 of mole ratio of C8- 10 fatty acid to glycerol and 0. 25 % of catalyst dosage （ based on mass of fatty acid） , Compared with the stirred tank reactor system, the jet loop reaction process to achieve MCT needed shorter time, less consumption of energy and nitrogen and has no pollution emission. The color of the obtained product is lighter and the hydroxyl value is lower. Therefore, the jet loop reaction process is preferred in producing MCT.

关 键 词：喷射式环路反应器工艺 搅拌釜式工艺 辛葵酸 甘油 中碳链三甘油酯 

分 类 号：TQ423.12[化学工程]