文献类型：期刊文献

中文题名：微碱超/近临界法制备无甘油生物柴油动力学及其性能研究

英文题名：Kinetics of trace KOH catalyzed glycerol-free biodiesel production under super/subcritical and its properties

作者：高艺霞[1];闫理宾[1];顾嘉辉[1];孙树桢[1];辛忠[1]

机构：[1]华东理工大学上海市多相结构材料化工重点实验室,上海200237

年份：2018

卷号：43

期号：6

起止页码：66

中文期刊名：中国油脂

外文期刊名：China Oils and Fats

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：国家高技术研究发展计划项目("863"计划;2009AA05Z404);中国博士后科学基金(2016M601526);吉林燃料乙醇公司资助项目;中央高校基本科研业务费(222201814010;22A1817025)

语种：中文

中文关键词：超/近临界法;无甘油生物柴油;动力学;低温流动性;燃烧性能

外文关键词：super/subcritical method;glycerol -free biodiesel;reaction kinetics;low temperature flow property;combustion performance

摘要：对微碱超/近临界条件下,棕榈油与碳酸二甲酯(DMC)酯交换制备无甘油生物柴油的动力学进行了考察,并测试了无甘油生物柴油与0号柴油混合燃料的低温流动性能以及燃烧性能。结果表明:该反应在260~300℃的温度范围内呈拟一级反应,其反应活化能Ea为43.0 k J/mol,远低于常压碱催化的反应活化能79.1 k J/mol;当生物柴油的掺混比例低于5%时,其对0号柴油的冷滤点、倾点以及基本燃烧特性参数影响不大;通过低温结晶以及流变性能的测试,发现生物柴油中的饱和脂肪酸可以与石化柴油中的正构烷烃形成最低共熔物,从而延缓低温下燃料蜡晶的析出。
The transesterification kinetics of glycerol - free biodiesel from palm oil and dimethyl carbonate （DMC） under super/subcritical conditions with trace amount of KOH as catalyst was studied. Then the biodiesel was mixed with 0# diesel to produce the blend fuel, and the low temperature flow properties and combustion performance of the blend fuel were studied. The results showed that a pseudo first - order model was proposed at 260 -300 and the activation energy （Ea） was 43.0 kJ/mol ,which was far low- er than that of the alkine catalysis under normal pressure （79.1 k J/tool）. Besides, there was little difference of the cold filter plugging point, pour point and the basical combustion performance parameters of 0# diesel when the biodiesel account for less than 5% in the blend fuel. The low temperature crystallization and rheological properties test showed that the saturated fatty acids in biodiesel and n -alkanes in diesel could form the eutectic mixture, which could hinder the precipitation of fuel wax crystal.