油脂酯交换制备生物柴油的反应分离耦合工艺  

REACTION-SEPARATION COUPLING PROCESS OF TRANSESTERIFICATION FOR BIODIESEL PREPARATION

作　　者：曹志广[1] 杜泽学[1] 闵恩泽[1] 

机构地区：[1]中国石化石油化工科学研究院石油化工催化材料与反应工程国家重点实验室,北京100083

出　　处：《石油炼制与化工》2011年第10期1-4,共4页Petroleum Processing and Petrochemicals

摘　　要：在500mL的酯交换反应和甘油分离耦合实验装置上进行大豆油制备生物柴油的试验和反应条件的研究。结果表明,在反应温度60℃、醇油摩尔比4.5～5.0、进料量500～2 000mL/h和催化剂用量0.50%～0.75%(相对于油质量)的条件下,制备的生物柴油中脂肪酸甲酯摩尔分数不低于97%。此工艺具有反应速率快、平衡转化率和选择性高的特点。所制备的生物柴油及其与-10号柴油的调合产品B5都分别满足国家标准要求。The preparation of biodiesel from soybean oil and methanol catalyzed by KOH was carried out on a 500 mL test device of coupling transesterification reaction and glycerol separation,and the reaction conditions were studied. Test results show that under the conditions of a reaction temperature of 60℃ ,the methanol/oil molar ratio of 4.5--5.0 ,feed rate in the range of 500--2 000 mL/h and a catalyst dosage of 0. 50 %--0. 75 % （based on oil）, the molar fraction of fatty acid methyl ester in the obtained biodiesel is not less than 97%. This process possesses the advantages of fast reaction rate,high equilibrium conversion and good product selectivity. The qualities of obtained biodiesel and B5 blended product （--10# diesel fuel blended with 5% biodiesel）meet the relative specifications of National Standard for biodiesel fuels,GB/T 20828--2007 and GB/T 25199--2010,respectively

关 键 词：大豆油 甲醇 生物柴油 酯交换反应 反应分离耦合 

分 类 号：TE667[石油与天然气工程—油气加工工程]