METHOD FOR HYDROTREATING HEAVY HYDROCARBON FEEDSTOCKS USING PERMUTABLE REACTORS, INCLUDING AT LEAST ONE STEP OF GRADUAL PERMUTATION

摘要

The invention relates to a method for hydrotreating a heavy fraction of hydrocarbons using a system of permutable fixed-bed guard areas, each area containing at least one catalyst bed, including at least one step during which the feedstock stream, which is being fed to the first guard area contacting the feedstock, is partially tilted toward the next downstream guard area, preferably in a gradual manner.