Heavy oil slurry bed hydrogenation method

Abstract

The invention discloses a heavy oil slurry bed hydrogenation method, in particular a slurry bed heavy oil hydrogenation process using a water-soluble catalyst. The method comprises the following processes of: first, directly dispersing part of the water-soluble catalyst in a heavy oil raw material; then, mixing part of the water-soluble catalyst and an emulsifying agent to obtain a mixture and adding the mixture into the heavy oil raw material; and finally, mixing the raw material mixed with the catalyst and hydrogen to obtain a mixture, adding the mixture into a slurry bed hydrogenation reactor; and performing a hydrocracking reaction under reaction conditions. By adopting the processes of the invention, the catalyst can be dispersedly in the heavy oil raw materials uniformly, so the components such as alkane, arene, colloid and asphaltine forming heavy oil are fully contacted with the catalyst so as to improve the hydrogenation modification reaction effect, inhibit the generation of coke and improve the yield of intermediate oil.

Description

technical field [0001] The invention relates to a heavy oil suspension bed hydrogenation method, in particular to a suspension bed hydrogenation method for processing low-quality heavy oil raw materials with a water-soluble catalyst. Background technique [0002] Suspension bed hydrogenation is an important chemical reaction process, which has broad application prospects in petroleum processing and chemical industry, especially in the process of lightening heavy oil, suspension bed hydrogenation technology has unique advantages. In the suspension bed hydrogenation process, the dispersion of the catalyst in the heavy oil is particularly important. If the catalyst can be evenly and stably distributed in the feedstock oil and fully contact with the components that make up the heavy oil feedstock, the effective contact area between the feedstock oil and the catalyst can be increased. Give full play to the hydrogenation activity of the catalyst and suppress the formation of coke....

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a heavy oil suspension bed hydrogenation method, the method of the present invention overcomes the shortcomings of the existing suspension bed hydrogenation process that the catalyst is not uniformly dispersed and the particles are large, resulting in poor coke suppression effect, so that The catalyst droplets are uniformly and stably distributed in the heavy oil raw material, and fully contact with each component in the raw material to improve the hydrogenation effect

Images