Heavy oil hydrogenation catalyst with high desulfurization activity and preparation method thereof

Abstract

The invention discloses a heavy oil hydrogenation catalyst with high desulfurization activity and a preparation method thereof, and the preparation method comprises the following steps: adding an alumina carrier into an organic acid solution for soaking treatment, further performing extraction treatment, then performing low-temperature heat treatment to obtain a carrier, then loading active metal, and finally drying and roasting to obtain the catalyst. The preparation method of the catalyst provided by the invention can effectively weaken the interaction between the active metal and the alumina carrier, improves the uniform dispersion of the active metal on the carrier to a certain extent, and the obtained catalyst is easier to sulfurize, thereby greatly improving the hydrodesulfurization activity of the catalyst.

Description

technical field [0001] The invention belongs to the technical field of oil refining and chemical industry, and relates to a catalyst and a preparation method thereof, in particular to a heavy oil hydrogenation catalyst with high desulfurization activity and a preparation method thereof. Background technique [0002] According to the International Maritime Organization's global marine fuel oil sulfur limit regulations, it is required that from January 1, 2020, the sulfur content of fuel oil used by ships worldwide cannot be higher than 0.5%. Recently, China has also released the implementation plan for the 2020 global marine fuel sulfur limit order. From January 1, 2020, international ships entering the waters under the jurisdiction of the People's Republic of China should use marine fuel with a sulfur content of no more than 0.5%. As a result, there is a large gap in low-sulfur marine fuel oil. Sinopec proposes that the production capacity of low-sulfur heavy clean marine fu...

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Problems solved by technology

[0003] The current technology for producing low-sulfur marine fuel oil is mainly to produce low-sulfur marine fuel oil by hydrogenation of fixed-bed residual oil. Higher requirements and higher processing costs

The fluidized bed hydrogenation technology has achieved rapid development in recent years. It can use inferior and cheap heavy oil as raw material, and the hydrogenated heavy oil produced can be used as low-sulfur marine fuel oil or blending components, with lower production costs and significant economic benefits. But the problem is that the sulfur content of hydrogenated heavy oil needs to be further reduced to increase the blending ratio

[0006] Although the catalyst preparation methods disclosed in the above patents have improved the carrier, the active metal is still supported by the conventional impregnation method, so that the active metal has a strong interaction with the alumina carrier, and the utilization rate of the active metal is not high, which limits the Further increase in catalyst activity

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