生物柴油副产物——甘油精制工艺优化研究  

Optimization of Refining Process of Glycerol —— By-product of Biodiesel

作　　者：黄艳芹[1] 

机构地区：[1]新乡学院化学与化工学院,河南新乡453003

出　　处：《新乡学院学报》2012年第4期329-331,共3页Journal of Xinxiang University

基　　金：河南省重点科技攻关项目(092102310184);河南省教育厅2008年度自然科学研究计划项目(2008C480002)

摘　　要：研究了在KOH催化下用大豆油与甲醇制备生物柴油所得副产物——甘油精制工艺优化问题,并优化了操作条件.结果表明:以甲醇为稀释剂,以磷酸中和的酸处理最佳条件为pH=6,温度为60℃,反应时间20 min;活性炭脱色的最佳条件为活性炭用量是甘油质量的0.8%,脱色时间60 min,脱色温度为80℃,甘油总收率大于70%,甘油纯度达到98.2%.The refining process optimization is researched of glycerol -- by-product of biodiesel from soybean oil with methanol by KOH-catalyzed, and operating conditions are optimized. Results show that the optimum conditions of the phosphoric acid neutralizing acidification, with methanol as diluent, are pH=6, reaction temperature 60 ℃, reaction time 20 min; and the optimum conditions for the activated carbon decolorization are mass ratio of activated carbon to glycerol weight 0.8%, decolorization time of 60 min, decolorization temperature of 80 ℃. The glycerol yield is greater than 70% and the purity of glycerol reached 98.2% under the optimum conditions.

关 键 词：生物柴油 副产物 甘油 精制工艺 酸处理 活性炭脱色 

分 类 号：TQ645.5[化学工程—精细化工]