METHOD OF HYDROTREATING FEEDS FROM RENEWABLE SOURCES WITH INDIRECT HEATING USING A CATALYST BASED ON NICKEL AND MOLYBDENUM HAVING A PARTICULAR ATOMIC RATIO

摘要

The invention describes a method of treating feeds from renewable sources comprising a hydrotreatment stage comprising at least two catalytic zones in which the entry stream comprising said feed mixed with at least a part of a hydrotreated liquid effluent from stage b) is introduced into the first catalytic zone at a temperature comprised between 150 and 2600C, and the effluent from the first catalytic zone is then introduced, mixed with at least a part of a hydrotreated liquid effluent from stage b) and preheated, into the following catalytic zone or zones at a temperature comprised between 260 and 3200C, and a stage of separation of the effluent from the hydrotreatment stage permitting the separation of a gaseous effluent and a hydrotreated liquid effluent of which at least a part is recycled at the top of each catalytic zone, said method using, in at least the catalytic zone or zones following the first, a bulk or supported catalyst comprising an active phase constituted by at least one group VIB element and at least one group VIII element, said elements being in sulphide form and the atomic ratio of the group VIII metal to the group VIB metal being strictly greater than 0 and less than 0.095.