Sulfuration type catalyst and preparation thereof

Abstract

The present invention relates to a sulfide type catalyst and a preparation method thereof, pertaining to the technical field of hydrogenation catalyst preparation. The method provided by the invention uses a dipping method to induce the required categories and quantity of active metals with a sulfide agent induced before, after or simultaneously and then obtains the final sulfide type catalyst by thermal treatment. The method provided by the present invention solves the defects of high preparation cost, long sulfide time and high operation cost of a normal oxidized catalyst. The catalyst prepared by the method of the present invention is suitable for an oil fraction hydrogenation process; therefore, the hydrogenation activity of the prepared catalyst can reach or surpass the effect of the normal catalyst.

Description

technical field [0001] The invention relates to a sulfurized catalyst and a preparation method thereof, which belongs to the improvement of a hydrogenation catalyst preparation method. Background technique [0002] In recent years, the trend of poor quality of crude oil in the world has become increasingly obvious, the content of sulfur, nitrogen and aromatics in petroleum products is increasing day by day, and the requirements for environmental protection in various countries are also getting higher and higher. It is obvious that there is a contradiction between the increasingly stringent environmental protection requirements and this reality More and more sharp; hydrogenation process is one of the effective means to produce clean oil, and hydrogenation catalyst is the key technology of this process. [0003] Hydrogenation catalysts are generally composed of Group VIII and Group IVB metals or metal oxides with hydrogenation functions and supports and additives with certain ...

AI Technical Summary

Problems solved by technology

The in-vessel vulcanization method is to put the oxidized catalyst into the hydrogenation reactor, and pass hydrogen and vulcanizing agent into the reactor during the heating process for pre-sulfurization. The disadvantages of this method are: long vulcanization time, high vulcanization cost, The vulcanizing agent is highly toxic and flammable, which is easy to cause pollution to people and the environment

The disadvantage of this method is that the process is complicated and the preparation cost is high

[0010] To sum up, some of the technologies reported in the current literature are still in the stage of laboratory exploration, and further research is needed for large-scale implementation. Although the other part has been successfully applied in industry, the process is complicated and the processing cost is high.