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Effect of free fatty acids contents on biodiesel quality. Pilot plant studies

机译:游离脂肪酸含量对生物柴油质量的影响。中试工厂研究

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In the present work an experimental design methods have been successfully applied to produce high quality biodiesel from used frying oil (UFO) samples with different free fatty acids (FFA) contents up to 4%. The influence of the oil FFA contents on biodiesel yield and purity regarding to mono-, di-and triglycerides (MG, DG and TG) contents has been studied and optimized. Results show that the FFA content of the samples influence on biodiesel yield and purity. It has been observed that the yield of methyl ester (ME) decrease from 97.2% to 95% by increasing the FFA content of the oil from 0% to 4%. When the FFA content of the oil decrease, the DG intermediate and TG content decrease, however the MG increase in biodiesel sample, exceeding in many cases the specification of EN14214 for biodiesel standard. The optimum conditions to produce a biodiesel sample which meets the European specifications EN14214 in particular, individual glyceride contents with high purity (99%) were found to be a catalyst concentration of 0.8% and an operation temperature of 30 degrees C. The pilot plant process of biodiesel production using UFO as cheap raw materials has also been studied. The obtained results have been used for industrial scale up of the process. (c) 2016 Elsevier Ltd. All rights reserved.
机译:在目前的工作中,一种实验设计方法已成功应用于由不同脂肪酸(FFA)含量高达4%的废油炸油(UFO)样品生产高质量的生物柴油。已经研究和优化了油中FFA含量对生物柴油收率和纯度的影响,其中涉及甘油单酯,甘油二酯和甘油三酯(MG,DG和TG)的含量。结果表明,样品中的FFA含量会影响生物柴油的产量和纯度。已经观察到,通过将油的FFA含量从0%增加到4%,甲酯(ME)的产率从97.2%降低到95%。当油中的FFA含量降低时,DG中间体和TG含量降低,但是生物柴油样品中的MG升高,在许多情况下超过了生物柴油标准EN14214的规范。尤其是,生产符合欧洲规范EN14214的生物柴油样品的最佳条件是,高纯度(99%)的单个甘油酯含量为0.8%的催化剂浓度和30摄氏度的操作温度。中试过程还研究了使用不明飞行物作为廉价原料生产生物柴油的方法。所得结果已用于该方法的工业规模放大。 (c)2016 Elsevier Ltd.保留所有权利。

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