Heavy oil suspension bed hydro-upgrading method

Abstract

The invention discloses a heavy oil suspension bed hydro-upgrading method, in particular to a suspension bed heavy oil hydro-upgrading technology of a dispersive catalyst. The method comprises the following steps: firstly dispersing the dispersive oil-soluble catalyst into the heavy oil raw material, then mixing the dispersive water-soluble catalyst with emulsifier, adding the mixture to the heavy oil raw material, mixing the raw material containing the catalyst with hydrogen and then feeding into a suspension bed hydrogenation reactor; and performing hydrocracking reaction under the reaction condition. In the process of the method of the invention, the catalyst can be evenly dispersed in the heavy oil raw material, so that alkane, aromatic hydrocarbon, colloid and asphaltene which form the heavy oil, can fully contact with the catalyst, thereby improving effects of the hydro-upgrading reaction, inhibiting coke generation, and enhancing yield of middle distillate.

Description

technical field [0001] The invention relates to a heavy oil suspension bed hydrogenation upgrading method, in particular to a suspension bed hydrogenation upgrading method for processing low-quality heavy oil raw materials with a dispersed 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 fo...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a heavy oil suspension bed hydrogenation upgrading method, the method of the present invention overcomes the gap between catalyst dispersion and hydrogenation effect, preparation and cost brought by the existing suspension bed conventional catalyst usage method Contradictory problems, a new combination of dispersed catalysts is proposed, which can simplify the operation process and reduce costs as much as possible while achieving ideal dispersion effects and hydrogenation effects

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