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AssigneeInstitut Francais du Petrole
InventorsSamuel Mignard, Virginie Harle, Slavik Kasztelan, Nathalie Marchal-George
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The invention relates to a process for the sulfurization of hydroconversion catalysts, whereby said catalyst contains at least one element of group VIII of the periodic table and optionally an element of group VI, whereby said metal is present in the oxide state. Said process comprises at least one stage that is carried out in a hydrotreatment zone in the presence of at least one thionic compound and at least one nitrogenous compound. This process is carried out in such a way that before the final sulfurization temperature is reached, at least 130% of the stoichiometric amount of sulfur that is necessary for complete sulfurization of the catalyst is injected in said catalyst.
Process for activation of a hydroconversion catalyst, whereby said catalyst contains at least one metal of group VIII, and at least one acid element, according to which a light petroleum fraction including at least 95% of the feedstock is distilled at a temperature that is less than 400° C., at least one thionic compound and at least one nitrogenous compound are injected in said catalyst, process characterized in that the nitrogenous compound is injected before 270° C. and the QS amount of injected sulfur before the final sulfurization temperature is reached is at least equal to 1.3 times the QS0 sulfur amount that is necessary for the complete sulfurization of the catalyst.
Dependencies are inferred from the claim text.