为了提高地沟油的有效再生利用率,同时抑制页岩油中碱性氮化物在加工过程中对催化剂的毒害作用,采用向页岩油中添加地沟油的方法,使得碱性氮化物与地沟油中的高级脂肪酸结合形成中性络合物。通过正交实验考察了地沟油质量分数、反应温度和反应时间等因素对碱性氮化物抑制率和转化率的影响,并采用电子顺磁共振(EPR)技术对结果进行验证。结果表明,当地沟油质量分数为40%、反应温度为80℃、反应时间为20 min时,抑制率及转化率达到最高,分别为74.06%、56.77%。添加地沟油能够有效降低页岩油中的氮自由基含量,对碱性氮化物具有较好的抑制作用,同时为地沟油制备液体燃料提供了新的方法。

In order to improve the effective recycling rate of waste catering oil and inhibit the toxic effect of alkaline nitrides in shale oil on the catalyst during processing,waste catering oil is added into shale oil to make alkaline nitrides combine with higher fatty acids in waste catering oil to form neutral complexes.The effects of the mass fraction of waste catering oil,reaction temperature and reaction time on the inhibition rate and conversion rate of alkaline nitrides are investigated through orthogonal experiment,and the experimental results are verified by electron paramagnetic resonance (EPR) technology.The results show that both the inhibition rate and conversion rate reach the highest,74.06% and 56.77%,respectively when the mass fraction of waste catering oil is 40%,the reaction temperature is 80℃,and the reaction time is 20 min.The addition of waste catering oil can effectively reduce the content of nitrogen free radicals in shale oil,having a good inhibition effect on alkaline nitrides.At the same time,it provides a new method for the preparation of liquid fuel from waste catering oil.

安浩(1996-),男,硕士研究生,主要研究方向是地沟油与页岩油的共催化裂化,anhao20220108@163.com;。