Processing method before using hydrogenation catalyst

Abstract

The invention relates to a processing method before the application of hydrogenation catalyst, comprising the detailed process as follows: organic solvent, elemental sulfur and water are introduced in oxidated hydrogenation catalyst; subsequently, heating predisposal is carried out under a certain condition. The processing method before the application of the hydrogenation catalyst loads the sulfur-contained substance such as the elemental sulfur to the hydrogenation catalyst; a certain interaction is generated and little heat is discharged; and the water vapor which is generated during the heat disposal process of the added water adjusts the interaction of the sulfur and the catalyst and reduces the heat discharging degree during the heat disposal process. Compared with the prior art, the catalyst obtained by the method has the advantages of high utilization ratio of the sulfur-contained matter, gradual increment of the temperature of the catalyst bed and high activity of the catalyst when the activation is applied. The method can be used for processing before the application of various hydrogenation catalysts.

Description

technical field [0001] The invention relates to a treatment method before application of a hydrogenation catalyst, in particular to a treatment method for introducing elemental sulfur into other devices outside the reactor before the catalyst is used for hydrogenation reaction. Background technique [0002] Hydrofining, hydrotreating, hydrocracking and other hydrogenation catalysts generally use alumina, silicon aluminum, molecular sieve and other refractory oxides as carriers, and one or more active metal groups such as molybdenum, tungsten, cobalt, nickel, etc. Sometimes, the catalyst can also contain auxiliary components such as phosphorus, silicon, fluorine, titanium, zirconium, and boron. Generally, the metal component of the catalyst obtained in the production process exists in an oxidized state, while in the hydrogenation reaction process, the active metal component of the catalyst is in a sulfide state (the metal exists in the form of sulfide: Co 9 S 8 、MoS 2 、Ni ...

AI Technical Summary

Problems solved by technology

CN1400056A Coat the pre-sulfurized catalyst containing sulfidation agent with oxygen-containing organic matter containing at least 16 carbon atoms, treat it for a period of time above 175 ° C, and then activate it with hydrogen to reduce the self-heating of the catalyst, but it cannot completely solve the problem of sulfide catalyst There are still some problems in the storage, transportation and loading of the catalyst.

USP6059956 (CN1076635C) is used to contain olefin or olefin cut fraction such as under the presence of vegetable oil, introduce elemental sulfur and organic polysulfide into catalyst, then activate with hydrogen, passivate with oxygen-containing gas at last, although this method can improve catalyst activity, but Since the metal on the catalyst is in a sulfide state, the same problem as above still exists

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