Process for preparation of hydrogenation catalyst composition

Abstract

The invention relates to the preparing method of a catalyst compound. The invention adopts coprecipitation to produce compound oxide predecessor, then pulp the predecessor and MoO3. After mixing the pulp, filtering, shaping and activating, the producers can get the catalyst. The producing procedure of NixWyOz includes the following steps: preparing the mixture that contains Ni and W, adding strong aqua to get A solution; preparing the mixture B that contains the added sunstances, mixing mixture B with strong aqua to get the gel and adding A to the gel; heating the material to vaporize the ammonia until the ph value reaches 7.5-9.0. The metal in the catalyst spreads uniformly and the volume of the bore is very large, so the catalyst can process heavy materials. The activity during the deepde-impurity process is even higher. The invention is characterized by simple method and low metal loss rate and it's mainly used to produce catalysts with higher metal content.

Description

Preparation method of hydrogenation catalyst composition technical field The present invention relates to a preparation method of a hydrogenation catalyst composition, in particular to a preparation method of a bulk catalyst composition, in particular to a preparation method of a bulk catalyst for hydrocarbon oil hydroconversion or hydrotreating, in particular It is a preparation method of a bulk catalyst used in the deep desulfurization, denitrogenation and other impurity removal processes of hydrocarbon oil. Background technique Fuel contains S, N and other impurities and aromatics (especially polycyclic aromatics), which will form harmful substances such as SOx, NOx and solid particles during use, which not only endanger human health, but also form acid rain in the air, causing greater pollution and destruction. In the past ten years, many countries including North America, Europe, and Japan have proposed the concept of ultra-low sulfur diesel (ULSD) and continuously f...

AI Technical Summary

Problems solved by technology

Due to the high metal content of the catalyst prepared by this method, there is often a lack of sufficient interaction between the metal and alumina, resulting in poor catalyst strength

The active component part is composed of a large number of metals, and some internal metal components cannot be fully utilized during the formation of Ni-Mo or Ni-Mo-W powder, resulting in loss of activity, and this problem cannot be solved by simple bonding

CN1342102A discloses a mixed metal catalyst, which is obtained by co-precipitating three active metals. Its main disadvantage is that no coordination effect between different active metals has been found

In the prior art, only the types and contents of metals are emphasized, and how to improve the coordination and cooperation between different metals is not involved

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