The process and technology parameters of biodiesel refining were studied. From the practice results, after alkali refining processing and washing drying steps, the product quality was better than that in the national standard GB/T 20828—2015 Biodiesel blend stock ( BD100) for diesel engine fuels, and the indices were density 877.6 kg/m3( 20℃) , flash point ( closed-cup) 159.0℃, sulfur 0.02 mg/kg, acid value 0.22 mg/g and water 0.04% .%对生物柴油进行精炼,研究了精炼的工艺流程和工艺技术参数。从实践结果可以看出,生物柴油经碱炼处理和洗涤干燥后,其品油品质优于国家标准 GB/T 20828—2015柴油机燃料调和用生物柴油( BD100),各项指标为：密度877.6 kg/m3(20℃),闪点(闭口)159.0℃,硫0.02 mg/kg,酸值0.22 mg/g,水0.04%。
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