PROCESS FOR PRODUCING A HEAVY HYDROCARBON FRACTION WITH A LOW SULFUR CONTENT COMPRISING A DEMETTALATION SECTION AND A HYDROCRACKING SECTION WITH REACTORS EXCHANGEABLE BETWEEN THE TWO SECTIONS

摘要

The present invention describes a process for treating a hydrocarbon feedstock containing at least one hydrocarbon fraction having a sulfur content of at least 0.1% by weight, an initial boiling temperature of at least 340°C, and a final boiling temperature of at least 440°C, which process uses reactors exchangeable between the hydrodemetallation section and the hydrocracking section, thus enabling the residence time in said sections to be varied at will. Figure 1 to be published