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Process for preparing demetalizing and desulfurizing catalyst of heavy oil hydrogenation

A desulfurization catalyst, a technology for heavy oil hydrogenation, applied in refining to remove heteroatoms, etc., can solve the problems of difficulty in meeting requirements at the same time, adjust the demetallization and desulfurization functions, etc., to save the amount of additives, improve the activity stability, and balance the surface. acid effect

Inactive Publication Date: 2005-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1050736A, CN1218086A disclose a kind of hydrogenation demetallization and desulfurization catalyst, and its method is to adjust the pore structure of catalyst, make it have the pore distribution suitable for demetallization and desulfurization reaction at the same time, but fail to further adjust demetallization and desulfurization on composition Function
Different reactions, such as demetallization and desulfurization, require different catalyst properties, and the above-mentioned patent uses one raw material, which is difficult to meet the requirements at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Aluminum hydroxide dry rubber powder (produced by the No. 1 Fertilizer Factory of Qilu Petrochemical Company) prepared by the sodium metaaluminate-carbon dioxide method was selected and calcined at 950°C for 3 hours to obtain alumina A. Take the above-mentioned aluminum hydroxide dry rubber powder and mix it with 10% sodium carbonate solution to form plastic body B. The amount of auxiliary agent added in this step is 60% of the total amount.

[0026] Mix A and B at a ratio of 1:1 as alumina, add acetic acid solution and knead to form a plastic body, shape it on an extruder, dry at 120°C for 3 hours, and then bake at 600°C for 3 hours to obtain a catalyst carrier.

[0027] The catalyst carrier was impregnated with active metals and remaining additives (see Table 1 for content), then dried at 130°C for 2 hours, and calcined at 550°C for 2 hours to obtain the final catalyst C1.

Embodiment 2

[0029] Based on Example 1, the changed conditions are to change the additive sodium into magnesium (added in the form of magnesium nitrate solution), and the addition amount in the aluminum hydroxide dry rubber powder is 20% of the total amount, and the two aluminum-containing materials The ratio based on alumina is 0.4:1. Catalyst C2 was prepared, and its specific composition is shown in Table 1.

Embodiment 3

[0031] Based on Example 1, the condition of change is that the addition in aluminum hydroxide dry rubber powder is 40% of the total amount, and the auxiliary agent is potassium (using potassium nitrate solution), and the amount of two kinds of aluminum-containing materials calculated by alumina The ratio is 1.3:1. Catalyst C3 was made, and the specific composition is shown in Table 1.

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Abstract

The invention discloses a preparation method of heavy oil hydrogenation demetallization and desulfurization catalyst, which uses two kinds of aluminum-containing materials in different forms, one is calcined alumina, the other is aluminum hydroxide dry rubber powder, and the alkali metal And / or alkaline earth metal elements are additives, the additives are pre-mixed with aluminum hydroxide dry rubber powder, and part is loaded on the catalyst by impregnation method, so that the additives are unevenly distributed on the catalyst. The catalyst prepared by the method of the invention has high demetallization activity and desulfurization activity at the same time, and the stability of activity, especially the stability of desulfurization activity is good. It can be used in hydrodemetallization and hydrodesulfurization of heavy and residual oil.

Description

1. Technical field [0001] The invention relates to a method for preparing a catalyst for hydrogenation treatment of inferior raw material oil, in particular to a method for preparing a catalyst used in the processes of hydrodemetallization and hydrodesulfurization of heavy hydrocarbon raw materials. 2. Background technology [0002] Among the heavy hydrocarbon raw materials, the heavy part of petroleum is the most representative. In recent years, due to the trend of crude oil becoming heavier and inferior, the residual carbon, asphaltene and acid value in the oil have increased, resulting in an increase in metal content. [0003] For hydrodemetallization catalysts that meet the above requirements, the usual methods include adjusting the pore structure, the type, content and ratio of active components, matching between different types of catalysts, and adjusting the acidity of the carrier. Among them, adjusting the pore structure and acidity of the catalyst is the most effecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/06
Inventor 蒋绍洋孙素华向绍基王刚王永林
Owner CHINA PETROLEUM & CHEM CORP
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