Hydrogenation catalyst aid for residual oil suspended bed and its use

Abstract

Disclosed is a suspended bed hydrogenation catalyst assistant belongs to the fields of oil procession and oil chemical technology. The assistant contains are or the combination of several ones willingly chosen from high molecule, synthesis organic high molecule, natural surface active agent, synthesis surface active agent, condensed aromatics, organic alcohol, organic carboxylate surfactant, organic carboxylic acid amide, organic carboxylic acid halogen, organic phosphide. It can be applied in the course of suspended bed hydrogenation, as well as that of hydrogenation mixing of hydrogenation and liquidifying coal. By adding the assistant, the hydrogenation effect of catalyst can be increased, as well as decreasing scale formation in reactor in the time of decreasing scale formation in fractional distillation part of the reacting pipe.

Description

Technical field: [0001] The invention relates to a catalytic assistant in the hydrogenation process of a suspended bed of residual oil, and belongs to the technical fields of petroleum processing and petrochemical industry. The additive can be used in the hydrogenation process of residual oil suspension bed, and can also be used in the hydrogenation co-refining process of residual oil and coal, residual oil and waste plastic, residual oil and waste rubber, waste plastic and waste rubber, and coal liquefaction process. The catalytic promoter helps to improve the coke suppression effect of the catalyst in hydrogenation, and more importantly, it is beneficial to suppress the amount of coking in the reactor during the above process, and at the same time reduce the coking and coking in the heating furnace tube, reaction pipeline, fractionation and other parts. fouling phenomenon. Background technique: [0002] With the increasingly heavy oil produced and the increasing demand fo...

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Problems solved by technology

[0010] No matter what kind of catalyst is used, because the residual oil suspension bed hydrogenation process is carried out at a high temperature of 430-470 °C, the coking phenomenon of the residual oil is relatively serious, especially the coking phenomenon of the reactor during continuous operation at high temperature is serious, and this problem has always affected industrialization of the process