新型转鼓反应器在脂肪酸甲酯连续磺化中的应用

New type rotor-drum reactor for continuous sulfonation of fatty acid methyl ester

设计了一种新型的转鼓反应器并用于脂肪酸甲酯的连续磺化反应。研究结果表明,新型转鼓反应器具有持液量小、液体中气含率高、气液停留时间分布均匀的特点。在转鼓转速为1 200 r/min、SO3体积分数为5%、SO3/FAME摩尔比为1.2∶1、85℃磺化、65℃老化、老化1 h的条件下,得到的产品中脂肪酸甲酯磺酸钠质量分数为84.9%,二钠盐质量分数为1.2%,二钠盐的质量分数明显小于文献报道值;得到的产品符合国家优级品要求。

A new type rotor-drum reactor is designed and used for the continuous sulfonation of fatty acid methyl ester. The results show that the new type rotor-drum reactor has the characteristics of the small liquid holdup, the high gas holdup and the uniform distribution of gas and liquid residence time. The products with an α-MES concentration of 84. 9% and a disalt concentration of 1.2% are obtained under the following conditions ： 1 200 rpm of the rotor-drum rotation speed ,5% of the SO3 concentration, 1.2 molar ratio of SO3 to FAME ,85℃ of the sulfonation temperature ,65℃ of the aging temperature and 1 hour of the aging time. Meanwhile, the disalt concentration is significantly less than the reported value and the product meets the requirements of the national standards for a superior grade product.