Method and device for pretreating hydrogenation raw material by utilizing electric separation technology

Abstract

The invention provides a method for pretreating a hydrogenation raw material by using an electric separation technology, and the method solves the pollution problem of metal particles and mechanical impurities in the hydrogenation raw material through an efficient electric separation method. According to the method, the process bottleneck of a traditional electrostatic separation method is brokenthrough, the method can be operated under a high-temperature condition, colloid and asphaltene in the hydrogenation raw materials are selectively removed, and long-period, stable, continuous and efficient production operation is achieved. According to the refined oil product obtained by the invention, the metal particle removal rate is higher than 95%, the mechanical impurity removal rate is higher than 99%, the colloid and asphaltene content is low, and meanwhile, the full utilization of the backwash oil and the optimal use of peripheral system supporting facilities are realized; and the defects of redundant cleaning operation, easy blockage of a filter screen, low treatment efficiency, frequent switching, high device maintenance cost and the like of the traditional filter are overcome.

Description

technical field

[0001] The invention relates to a method for pretreating hydrogenation raw materials, in particular to a method and device for pretreating hydrogenation raw materials by using electric separation technology. Background technique

[0002] In the modern oil refining industry, hydrogenation technology includes two types of technologies: hydrotreating and hydrocracking. Hydrotreating refers to the hydrogenation technology in which ≤10% of the raw oil molecules become smaller during the hydrogenation reaction process, including the traditional hydrofining and hydrotreating technologies. Hydrocracking refers to the hydrogenation technology in which more than 10% of the raw oil molecules become smaller during the hydrogenation reaction process, including traditional high-pressure hydrocracking (reaction pressure ≥ 14.5MPa) and moderate and medium-pressure hydrocracking (reaction pressure ≤ 12.0MPa) technology. In China, the tendency of crude oil to become heavier ...

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