燃料化学学报Issue(8)：973-977,5.
多频超声反应槽连续强化酸化油酯交换制备生物柴油研究
Preparation of biodiesel via continuous transesterification in multi-frequency ultrasonic reaction tank
摘要
Abstract
The preparation of biodiesel from inedible low-cost acid oil with a high average acid value( AV) of about 33 . 07 mgKOH/g via pre-esterification and transesterification processes in a self-designed continuous biodiesel production apparatus assisted by multi-frequency ultrasonic at high efficiency and low energy consumption was investigated. The influences of operating variables including flow rate of material ( residence time) , ultrasonic power and frequency or combinations, the amount of catalyst, the molar ratio of methanol to oil at ambient temperature and the specific energy consumption on the transesterification reaction were discussed. The results show that multi-frequency ultrasonic irradiation is superior to single-frequency in enhancing biodiesel production process;the yield of fatty acid methyl esters(FAME) about 96. 83% is attained with 15-25-35-40 kHz of frequency combination, 200 W of powers, 25 L/h of flow rates of the processed oil ( residence time 54 min) , 6:1 mol ratio of methanol to oil ,and 1. 2% KOH ( % of acid oil). 50 L waste acid oil can be converted into 48 L biodiesel that meet the standards GB19147-2009 , and the overall electric power and time consumptions are about 5. 42 kWh and 8. 667 h, respectively.关键词
酸化油/生物柴油/多频超声/连续式Key words
acid oil/biodiesel/multi-frequency ultrasonic/continuous process分类
化学化工引用本文复制引用
邹华生,李雪峰,熊乔兴..多频超声反应槽连续强化酸化油酯交换制备生物柴油研究[J].燃料化学学报,2014,(8):973-977,5.基金项目
广东省教育部产学研结合项目(2011B090400116) （2011B090400116）
广东省科技计划项目(20130320C ) （20130320C ）
广州市科技攻关项目(2012J4300158)。 （2012J4300158）
