新型渣油加氢脱金属催化剂RDM-3的研制

DEVELOPMENT OF NEW RESID HYDRO-DEMETALLIZATION CATALYST RDM-3

根据渣油加氢脱金属的反应机理,设计并制备了更适合于脱金属反应的催化剂载体,使催化剂的孔体积及孔径明显增加,表面酸性大幅度降低,改善了催化剂的扩散性能及反应的稳定性;同时优化了催化剂活性组分的负载方法,使新型脱金属催化剂RDM-3的各项杂质脱除性能明显提高。工业放大结果表明,催化剂制备过程稳定,其脱金属性能略好于实验室制备的催化剂,适合于大规模工业生产。

Based on the reaction mechanism of resid feed hydrotreating, a new catalyst carrier was designed and prepared. As compared with the similar type of catalyst carrier, said new carrier possessed the features of higher pore volume, larger pore diameter and weaker surface acidity, which suggested said carrier would be more suitable for hydro-demetallization of heavy oil. The active metal components were loaded on said carrier by a new technique for better metal dispersion,thus the impurity removal rate of the new catalyst, RDM-3, was improved significantly. The commercial trial of RDM-3 catalyst production showed that the process of production was stable, the catalyst performance was slightly better than the catalyst prepared in lab, therefore,the catalyst could be produced commercially.