加工劣质渣油的固定床渣油加氢催化剂的开发及工业应用

根据不同劣质渣油的特点，中国石化石油化工科学研究院有针对性地开发了具有超大孔的脱金属催化剂RDM-36，具有双峰孔的沥青质转化和脱金属催化剂RDMA-31，具有特殊外形和孔结构的多孔泡沫保护催化剂RG-30和蜂窝圆柱保护催化剂RG-20及RG-30E，并开发了适用于加工高（Ni+V）含量、高沥青质含量、高（Fe+Ca）含量渣油原料的固定床渣油加氢级配技术。工业应用结果表明：级配有RDMA-31的渣油加氢处理技术可以用来处理沥青质含量高的渣油原料，产品中金属杂质含量满足下游催化裂化装置对优质原料的要求； 级配有RDM-36的渣油加氢处理技术可以用来处理（Ni+V）含量接近200μg/g的渣油原料，金属杂质的脱除率达到预期目标；通过合理级配RG-30，RG-20，RG-30E，可以加工高（Fe+Ca）含量的渣油原料，并确保催化剂床层维持较低的压降，达到延长开工周期的目的。

DEVELOPMENT AND COMMERCIAL APPLICATION OF FIXED BED HYDROTREATING CATALYSTS FOR LOW QUALITY RESIDUES

According to the different characteristics of residues, catalyst RDM-36 with large holes for conversion of asphaltene, demetallization catalyst RDMA-31 with doublet holes, porous foam type protective catalyst RG-30 and honeycomb cylindrical type protective catalyst RG-20 and RG-30E with special shape and pore structure were developed by RIPP. Meanwhile layered catalyst bed processes were designed especially for processing residues with high content of Ni+V, asphaltene, and Fe+Ca, respectively. The industrial application results showed that the residue hydrotreating technology with RDMA-31 can be used to treat residue with high asphaltene content. The content of metal impurities in product meets the requirement of high quality raw material for FCC unit. The residue hydrotreating technology with RDM-36 can be used to treat residual oil with a (Ni+V) content close to 200 μg/g. The removal rate of metal impurities reaches the expected target. By reasonably graded RG-30, RG-20 and RG-30E, high (Fe+Ca) content residue can be processed with relatively low pressure drop and prolonged operating cycle.