Ex-situ presulfurizing method of hydrogenation catalyst

Abstract

The invention provides an ex-situ presulfurizing method of a hydrogenation catalyst, adopting thioacetamide (CH3CSNH2) as a vulcanizing agent to pretreat the hydrogenation catalyst in oxidation state. The hydrogenation catalyst is mainly used for treating hydrocarbon materials. The vulcanizing agent can be used separately, or can be used in combination with other sulfides. The vulcanizing agent prepared by the method in the invention has the advantages that the cost is low, the method can solve the existing problem of high production cost of the organic vulcanizing agent; furthermore, the technique has the advantages of easy preparation method and equipment, little pollution and easy operation and the like; on the basis of the above advantages, the presulfurizing catalyst prepared by the presulfurizing method in the invention can reach or surpass the effect of in-situ presulfurizing method featuring complex operation and high cost, thus having wide application prospect in the ex-situ presulfurizing technique of hydrogenation catalysts.

Description

technical field

[0001] The invention relates to an out-of-machine presulfurization method mainly used for treating hydrocarbon hydrogenation catalysts. Background technique

[0002] With the reduction of the world's oil reserves, the trend of heavy crude oil is becoming more and more obvious, and the content of sulfur, nitrogen, and metals in crude oil is increasing. In order to make full use of limited resources and reduce environmental pollution, hydrogenation technology has become a very important processing link in the oil refining industry. Among them, the hydrogenation catalyst used usually contains group VIB hydrogenation active metal molybdenum and / or tungsten, and group VIII hydrogenation Hydrogen-active metal nickel and / or cobalt, these active metals exist in the catalyst in the form of oxidation before use, during the hydroconversion process, although the raw oil contains sulfide, it can be converted into a sulfide state by reaction , but under the reaction condi...