超声波制取生物柴油工艺技术探讨

介绍了新兴的超声波制取生物柴油工艺技术，并与液体碱催化技术进行了比较。众多试验结果表明，超声波能加速酯交换反应，反应时间仅需5-30min，其催化剂消耗量仅为液体碱催化技术的30％-50％，甲酯转化率可达99％。但在工业化应用方面仍需要原料预处理、甲醇回收、甲酯洗涤以及甲酯干燥等工艺过程。据估算，商业规模生物柴油加工中超生波处理的成本在0．002～0．015欧元／L之间。

A Study into Ultrasonic Biodiesel Production Technology

This article presents a new ultrasonic biodiesel production technology and compares it with the liquid alkali catalysis technology.Experiments show that ultrasonic wave facilitates ester exchange reaction,reducing the reaction time to only 5-30 minutes.The ultrasonic process uses only 30%-50% of the catalysts used in the liquid alkali catalysis technology and its methyl ester conversion rate can reach as high as 99%. However,commercializing the ultrasonic biodiesel technology requires a series of processes such as feedstock pre-processing,methanol recovery,methyl ester cleaning and methyl ester desiccation.It is estimated that in commercial biodiesel production,the cost of ultrasonic treatment ranges from 0.002-0.015 Euros per liter.