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 adjusting demetallization and desulfurization functions, difficult to meet requirements at the same time, etc., to save the amount of additives, balance surface acidity, and improve activity stability. sexual effect

Inactive Publication Date: 2003-11-26
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 furt

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 present invention discloses a preparation process of heavy oil hydrogenating, demetallizing and desulfruizing catalyst. Aluminum containing material in two different forms, including roasted alumina and dry aluminum hydroxide glue powder, is used. Of the assistant alkali metal element and/or alkali earth metal element, part is mixed with dry aluminum hydroxide glue powder and part is loaded onto the carrier via soaking process, so as to result in the inhomogeneous distribution of the assistant on the carrier. The catalyst has high demetalizing activity and desulfurizing activity, and highactivity stability, especially high desulfurizing activity stability. The catalyst may be used in the hydrodemetalizing and hydrodesulfurizing treatment of heavy oil 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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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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