METHOD FOR THE HYDROCONVERSION OF PETROLEUM FEEDSTOCKS IN FIXED BEDS FOR THE PRODUCTION OF FUEL OILS HAVING A LOW SULPHUR CONTENT

摘要

The invention relates to a method for converting petroleum feedstocks for the production of fuel oils having a low sulphur content including the following successive steps: a step comprising the fixed bed hydrodemetallation of the feedstock using upstream a system of switchable fixed bed reactors; a step comprising the fixed bed hydrocracking of the hydrodemetallised effluent in the presence of a hydrocracking catalyst; a separation step for obtaining a heavy fraction; and a step comprising the hydrodesulphurisation of the heavy fraction in which hydrogen is reinjected.