A kind of hydrodemetallization catalyst and preparation method thereof

Abstract

The invention discloses a hydrogenation demetalization catalyst and a preparation method thereof. The catalyst comprises a hydrogenation active metal component and a carrier, and also comprises an organic compound. The catalyst realizes direct in-situ sulfuration of the metal on the surface of the catalyst without a generation reaction of hydrogen sulfide or a sulfuration reaction of hydrogen sulfide and the active metal in the starting sulfuration process, so the initial sulfuration temperature at working starting of the catalyst is greatly improved, the problem of too fast temperature rising in the catalyst sulfuration process is solved, and the starting time is greatly shortened.

Description

technical field

[0001] The invention relates to a preparation method of a hydrogenation catalyst, in particular to a hydrogenation demetallization catalyst and a preparation method thereof. Background technique

[0002] Residue is the heaviest fraction of crude oil and contains high concentrations of metals and asphaltenes. The nature of catalyst deactivation is determined by the nature of special raw materials, and the deactivation of residual oil catalyst mainly depends on metal deposition and coke formation. These impurities cover the surface of the catalyst, reducing the number of active centers, or blocking the pores of the catalyst, hindering the utilization of the inner surface, resulting in the decay of the catalyst activity. Metals in residual oil mainly exist in the form of organometallic compounds (such as nickel and vanadium mainly exist in the form of porphyrin compounds and asphaltenes), these metal compounds decompose during the reaction, and heavy metals are...

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