以废食用油为原料的生物柴油研制

Development of Biodiesel from Waste Cooking Oil

介绍了废食用油脂在KF/CaO催化剂作用下,与乙醇通过酯交换反应,生产生物柴油的研究。通过研究废食用油的预处理,反应时间,反应温度,原料与催化剂配比及催化剂用量等操作条件对反应的影响,摸索反应的最佳操作条件。实验结果表明,KF/CaO催化剂,在活性白土为载体,在KF与CaO质量比为1/3时,温度为800℃,烧制4 h时得到的催化剂活性最好。该反应得最适宜的操作条件是:醇油体积比为6∶1,催化剂量KF/CaO为原料油质量的2%,反应温度为70℃,反应时间为60m in。

Biodiesel was prepared from waste cooking oil by transesterification on KF/CaO catalyst. The influences of the waste cooking pretreatment, reaction time, reaction temperture, raw meterial, catalyst etc. on the reaction were discussed. The best reaction conditions were determined. When KF/CaO was used as catalyst, active argil was used as carrier, quality ratio of KF to CaO was 1： 3, the calcination temperture and time were 800 ℃ and 4 h. the catalyst activeness was best. The optimal condi- tions for the transesterication of waste cooking oil were as follows ： molar ratio of ethanol to oil, 6： 1 ; KF/CaO, 2.0 % （ w% ） ; temperture, 70 ℃ ; time, 60 min.