Waste hydrogenation catalyst treatment method, plastic liquefaction catalyst and application thereof

The invention provides a waste hydrogenation catalyst treatment method, a plastic liquefaction catalyst and application of the plastic liquefaction catalyst. The waste hydrogenation catalyst treatment method comprises the following steps: S1, carrying out first reaction on a first mixed system containing a waste hydrogenation catalyst, water and a silicon source at 150-200 DEG C; s2, cooling to 80-100 DEG C, adding glucose and an iron source, and maintaining the temperature at 80-100 DEG C for second reaction; s3, carrying out first solid-liquid separation, and roasting the obtained first solid product to obtain a catalyst precursor; and S4, carrying out vulcanization treatment on the catalyst precursor to obtain the plastic liquefaction catalyst. The waste hydrogenation catalyst is used for preparing the high-activity plastic liquefaction catalyst, and efficient utilization of the waste hydrogenation catalyst is achieved. 本发明提供一种废加氢催化剂处理方法和塑料液化催化剂及其应用，废加氢催化剂处理方法包括：S1、将含有废加氢催化剂、水、硅源的第一混合体系于150～200℃进行第一反应；S2、然