초록 ▼

The present invention provides a process for hydrotreating a metal-contaminated hydrocarbonaceous feedstock of which at least 60% wt. boils at a temperature 370.degree. C., the process comprising contacting the feedstock at elevated temperature and elevated pressure in the presence of hydrogen with

The present invention provides a process for hydrotreating a metal-contaminated hydrocarbonaceous feedstock of which at least 60% wt. boils at a temperature 370.degree. C., the process comprising contacting the feedstock at elevated temperature and elevated pressure in the presence of hydrogen with one or more catalyst beds each of a first catalyst, a second catalyst and a third catalyst, wherein

대표청구항 ▼

[ What is claimed is:] [1.] A process for hydrotreating a metal-contaminated hydrocarbonaceous feedstock of which at least about 60% wt. boils at a temperature.gtoreq.370.degree. C., which comprises contacting the feedstock at elevated temperature and elevated pressure in the presence of hydrogen wi

[ What is claimed is:] [1.] A process for hydrotreating a metal-contaminated hydrocarbonaceous feedstock of which at least about 60% wt. boils at a temperature.gtoreq.370.degree. C., which comprises contacting the feedstock at elevated temperature and elevated pressure in the presence of hydrogen with one or more catalyst beds each of a first catalyst, a second catalyst and a third catalyst where first, second and third designate the order of the catalyst contact with said feed, wherein(i) the first catalyst comprises a Group VI and/or a Group VIII hydrogenation metal component on an inorganic oxide support having at least about 40% of its pore volume in pores with diameters in the range from about 17 nm to about 25 nm and a surface area in the range from about 100 m.sup.2 /g to about 160 m.sup.2 /g;(ii) the second catalyst comprises a Group VI and/or a Group VIII hydrogenation metal component on an inorganic oxide support having at least about 40% of its pore volume in pores with diameters in the range from about 3 nm to about 17 nm and a surface area in the range from 160 m.sup.2 /g to 350 m.sup.2 /g; and(iii) the third catalyst comprises a Group VI and a Group VIII hydrogenation metal component on an inorganic oxide support having at least about 40% of its pore volume in pores with diameters in the range from about 17 nm to about 25 nm and a surface area in the range from about 100 m.sup.2 /g to about 160 m.sup.2 /g;wherein the third catalyst is at least 1.5 times more active for demetallization than the first catalyst at contaminant metal deposition levels of less than 5% wt.