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酸化油固定床酶法合成生物柴油研究
引用本文:陈英明,常杰,付严,陆继东,肖波.酸化油固定床酶法合成生物柴油研究[J].燃料化学学报,2008,36(2):236-240.
作者姓名:陈英明  常杰  付严  陆继东  肖波
作者单位:1.Institute of Energy & Power, Huazhong University of Science and Technology, Wuhan 430074, China;2.School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510641, China; 3.Guangzhou Institute of Energy Conversion , Chinese Academy of Science, Guangzhou 510640, China; 4.School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
摘    要:酸化油是油脂工作中以皂脚、油脚经酸化处理得到的产品.它的主要成份是游离脂肪酸及中性油,是生产脂肪酸的重要原料,但生产过程中有水解废水的产生,若将其直接排放,既污染了环境又浪费了资源.

关 键 词:固定化脂肪酶  酸化油  生物柴油  固定床  
文章编号:0253-2409(2008)02-236-05
收稿时间:2007-07-13
修稿时间:2007年7月13日

Biodiesel production from acid oil in fixed bed reactor with immobilized lipase
CHEN Ying-ming,CHANG Jie,FU Yan,LU Ju-dong,XIAO Bo.Biodiesel production from acid oil in fixed bed reactor with immobilized lipase[J].Journal of Fuel Chemistry and Technology,2008,36(2):236-240.
Authors:CHEN Ying-ming  CHANG Jie  FU Yan  LU Ju-dong  XIAO Bo
Abstract:The convertion of acid oil to biodiesel by use of immobilized Candida lipase absorbed on textile cloth was studied in a fixed bed reactor,which can not only reduce the environmental pollution of acid oil, but also produce a substitute for petroleum diesel. The acid oil mixed with methanol was pumped into three fixed bed reactors in series, and the methanol was added with the molar flow rate same as the acid oil in each reactor. The effects of enzyme content, solvent content, water content, flow rate of reactant and temperature on the enzymatic reaction were analyzed. The result of orthogonal experiments indicates that the optimal transesterification can be performed under the following conditions: immobilized lipase content in acid oil, 20%; hexane content in acid oil, 10%; water content in acid oil, 10%, reaction temperature, 50℃; and flow rate of reactant, 0.08g/min. Under these conditions, the FAME content of 90.18% in the product is obtained. The immobilized lipase can be reused with relatively stable activity after glycerol being removed from the surface. By refining, most of the chemical and physical properties of biodiesel will meet the American and Germany biodiesel standards and exceed the Chinese standard of 0# petroleum diesel except for carbon residue, density and kinematic viscosity.
Keywords:acid oil  biodiesel  fixed bed reactor  
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