Sulfuration method of secondary active center diesel oil hydrodesulfurization catalyst

Abstract

The invention discloses a sulfuration method of a secondary active center diesel oil hydrodesulfurization catalyst. According to the sulfuration method, in sulfuration processes of the secondary active center diesel oil hydrodesulfurization catalyst, sulfuration is carried out under a relatively high pressure at a relatively low temperature firstly; and then sulfuration is carried out under a relatively low pressure at a relatively high temperature. The sulfuration method is capable of forming more CoMoS phases which are more dispersive, and more sulphur vacancies and desulfurization centers, so that hydrodesulfurization activity of the secondary active center diesel oil hydrodesulfurization catalyst is increased.

Description

technical field [0001] The invention relates to a method for vulcanizing a diesel hydrodesulfurization catalyst, in particular to a method for vulcanizing a diesel hydrodesulfurization catalyst with a type II active center. Background technique [0002] In recent years, with the increasingly stringent environmental regulations, the production of clean diesel has become a common problem faced by refineries all over the world. In 2006, the United States passed a regulation requiring the sulfur content in diesel to be reduced from 50ppm to 15ppm, and Europe and Japan also proposed a requirement that the sulfur content be less than 10ppm in 2008. my country also adjusts the diesel quality requirements in a timely manner according to its own situation, and continuously narrows the gap with foreign developed countries. From July 1, 2005, the sulfur content standard of diesel for vehicles shall be implemented according to the European Class II standard, which requires sulfur to be...

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Problems solved by technology

[0008] The design of the vulcanization pressure in the above patents is carried out under the reaction pressure conditions, and none of them involves the influence of the vulcanization pressure on the activity of the catalyst.