利用Biopro型设备转化废弃油脂制备生物柴油

为开发适应中国废弃油脂生物柴油转化的成套技术与装备，结合美国Biopro 380型设备，对中国的4种典型废弃油脂生物柴油转化工艺进行了系统研究，结果表明，甲醇回流温度65℃下，酯化反应时间2.5h、浓硫酸加入量0.5%、甲醇与游离脂肪酸摩尔比2.7∶1时，酯化混合物的酸值降至1～2?mg/g；转酯化反应在醇油摩尔比6∶1、催化剂NaOH的加入量1.0%（与废弃油脂的质量百分比）、反应时间60 min时，转酯化效果最佳；将该工艺条件应用于Biopro 380型设备中进行验证试验，获得的生物柴油产品质量指标基本符合中国生物柴油标准GB/T 20828-2007。

Trasformation of waste oil to biodiesel using Biopro equipments

In order to develop biodiesle technology and equipment for Chinese waste oil, biodiesel production conditions based on the four typical Chinese waste oils and Biopro 380 equipment from United States (US) were studied systematically. The results showed that under the optimum esterification conditions of methanol reflux temperature, reaction time 2.5 h, concentrated sulfuric acid 0.5%, methanol/free fatty acid (FFA) molar ratio 2.7:1, the acid value of esterification mixture was decreased to 1-2 mg/g. Under the optimum transesterification conditions of methanol/oil molar ratio 6:1, the catalyst (NaOH) amount 1.0%, reaction time 60 min, the transesterification efficiency was the best. The verification tests results in the Biopro 380 equipment under the above reaction conditions showed that most of the resultant waste oil biodiesel parameters complied with the limits established by China specifications for biodiesel (GB/T 20828-2007).