Hydroprocessing catalyst for heavy oil and preparing method thereof

A hydrogenation treatment and catalyst technology, applied in refining to remove heteroatoms, etc., can solve the problems that are not conducive to improving the catalyst activity and performance, affecting the surface properties and performance of the carrier, and the heterogeneity of the carrier properties. Dispersion, easy molding, effect of increasing pore volume and volume specific surface area

Inactive Publication Date: 2004-04-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silicon additive in the catalyst is added during the preparation of pseudo-boehmite, and the silicon source (water glass) is a colloidal substance. This substance and its addition method have a process that affects the properties and / or microstructure of alumina The impact of the influence of the carrier is likely to cause the inhomogeneity of the carrier properties; at the same time, the pore distribution is more dispersed due to the expansion of the carrier by adding silicon and phosphorus twice, which affects the surface properties and performance of the carrier, which is not conducive to improving the catalyst activity and other corresponding problems. Performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of phosphorus-containing aluminum hydroxide

[0029] Add 2500ml of deionized water into a clean container, heat up to 65°C, and under stirring conditions, add an aqueous solution of aluminum sulfate with a specific gravity of 1.14 and an aqueous solution of sodium metaaluminate with a specific gravity of 1.37 to the stirred deionized water at the same time, and keep The temperature was 65°C, the pH was 8.5, and the addition time was 75 minutes. After stopping feeding, age for 60 minutes, add deionized water to the filtered filter cake, and wash the material 4 times to make the Na in the material + Content4 2- Content3+ content <0.08m%, then add the filtered aluminum hydroxide filter cake to a solution of 2.0L deionized water and 45g 85m% phosphoric acid to make a slurry evenly, control the temperature of the slurry at 85°C, and filter the filter cake directly after slurrying for 40 minutes After drying at 110°C for 8 hours, it was pulverized for use. ...

Embodiment 2

[0037] In embodiment 1, the add-on of 85m% phosphoric acid is changed into 58g by 45g, and the charging amount of each other material and operating condition are all identical with embodiment 1, promptly cost example.

Embodiment 3

[0039] In embodiment 1, the add-on of 85m% phosphoric acid is changed into 70g by 45g, the half that nano silicon-containing compound is used adds after wetting with the nitric acid aqueous solution of 30ml 2.5%, half adds by embodiment 1 adding method, and material Kneading, the feeding amount and operating conditions of other materials are all the same as in Example 1, which is a cost example.

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PUM

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Abstract

The present invention relates to a preparation method of hydrogenation treatment catalyst. Said catalyst is prepared by loading molybdenum, nickel and phosphorus on a phosphorus and silicon contained alumina carrier prepared by adopting a special method, and said carrier prepared by special method is prepared by adding phosphorus adjuvant in the course of precipitation and ageing process and adding nano silicon-containing compound in the course of carrier forming process, for example, adding silicon dioxide. As compared with existent catalyst it has higher activity for hydro-desulfurization and hydro-denitrification of heavy oil, specially heavy fraction.

Description

1. Technical field [0001] The invention belongs to a heavy oil hydrogenation treatment catalyst and a preparation method thereof, which is suitable for the hydrogenation treatment of heavy oil, especially the hydrogenation treatment of heavy distillate oil. 2. Technical background [0002] Generally speaking, most of the hydrotreating catalysts for hydrocarbon feeds are supported by alumina, with a certain combination of elements such as tungsten, molybdenum, nickel and cobalt as active components. In order to further improve the activity and activity stability of hydrotreating catalysts, various methods have been adopted, such as improving the preparation conditions, modifying the carrier, adding additives and so on. Among them, the selected additives include silicon, phosphorus, fluorine, boron, zirconium, titanium, etc., and the methods of adding additives include co-precipitation, mechanical mixing and impregnation. Chinese invention patent CN1075548C introduces a metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04
Inventor 魏登凌彭绍忠
Owner CHINA PETROLEUM & CHEM CORP
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