Distillate oil hydrorefining catalyst

Abstract

The invention relates to a distillate oil hydrorefining catalyst which contains carbon-containing molded heat-resisting oxide carrier, molybdenum and / or tungsten metal component that are / is loaded on the carrier and selected from VIB cluster and nickel and / or cobalt metal component selected from VIII cluster; the method is based on the oxide and takes catalyst as reference; and the content of molybdenum and / or tungsten is 5-40wt%, and the content of nickel and / or cobalt is 1-8wt%. The carbon-containing carrier is prepared by the method comprising the steps of: (1) adopting water solution containing one or more in organic carboxylic acid and organic carboxylic acid salt for dipping the molded heat-resisting oxide carrier; (2) drying the product obtained in the step (1), and activating under the condition that inert gas exists; and in the steps (1) and (2), due to the dosage of the components and the operation condition, the weight ratio between carbon and the heat-resisting oxide in the carrier is 0.1:99.9-10:90. Compared with the existing catalyst, the catalyst has high hydrodesulphurization activity.

Description

technical field [0001] The invention relates to a distillate oil hydrogenation catalyst. Background technique [0002] Increasing awareness of environmental protection and stricter environmental regulations force the oil refining industry to pay more attention to the development of clean fuel production technology. How to economically and reasonably produce ultra-low sulfur oil products has become one of the key issues that the oil refining industry needs to solve at present and in a certain period of time in the future. one. The development of new hydrogenation catalysts with higher activity and selectivity is one of the most economical ways to produce clean oils. [0003] As one of the important components of hydrogenation catalysts, the surface physicochemical properties of the support have an important impact on the catalytic performance of the catalyst. Steven L. Butterworth et al. used anthracene and propylene to cover carbon on γ-alumina, and found that the hydrodes...

AI Technical Summary

Problems solved by technology

However, when carbon black powder and / or carbon precursors are introduced into alumina by mixing methods (tabletting, ball rolling, extrusion, etc.), the dispersion of carbon black powder and / or carbon precursors in alumina Random, resulting in random dispersion of carbon in the final carrier

In addition, as the carbon content in the carbon-containing mixed carrier increases, it is easy to cause the mechanical strength of the carbon-containing alumina mixed carrier to deteriorate.