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Prepn process of catalyst for residual oil hydroprocessing

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the complex, unsuitable and poor strength of the treatment process, etc. problem, to achieve the effect of simple preparation process

Active Publication Date: 2007-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] US4448896, US4102822 etc. use carbon black, starch and other physical pore-enlarging agents to expand the pore diameter of the catalyst, but the pore distribution is not concentrated and the strength is relatively poor
CN1209355A proposes a kind of macroporous catalyst and its preparation method, under the condition higher than room temperature, carry out peptization or ripening to pseudo-boehmite raw material, the material after forming is treated with the compound containing ammonium ion, makes catalyst pore The pore volume with a diameter of 10-20nm accounts for 70-85% of the total pore volume, and the processing process is more complicated
The neutralization and aging are carried out under the same conditions, and the pores of the prepared catalyst are mainly concentrated in the range of 7-12nm, which is not suitable as a catalyst for heavy distillate oil, especially residual oil hydrotreating

Method used

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  • Prepn process of catalyst for residual oil hydroprocessing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 2L sodium metaaluminate aqueous solution (Al 2 o 3 Concentration is 15g / 100ml) and 3L aluminum sulfate aqueous solution (Al 2 o 3 The concentration is 4g / 100ml) into the container at the high position respectively, and the flowmeter connected to the bottom flows into the stainless steel container with a stirrer and a heating jacket equipped with 6L of clean water, and is heated to 70°C; while stirring, add aluminum sulfate Solution, reduce the pH value of the slurry to 3.5, stabilize for 5 minutes, add the two materials into the stainless steel tank at a certain speed at the same time, keep the pH at 7.2, and neutralize for 15 minutes. After neutralizing for a period of time, stop adding the aluminum sulfate solution to raise the pH value to 9, stop adding the sodium metaaluminate solution, and stabilize for a period of time; pass through the aluminum sulfate solution, reduce the pH value to 3, and stabilize for a period of time; Sodium metaaluminate solution to rais...

Embodiment 2

[0046] Compared with Example 1, the process of changing the pH value of the swing solution from 9 to 3 and then to 9 was repeated twice, and the amount of other materials and operating conditions were the same as in Example 1 to obtain Sample 2.

Embodiment 3

[0048] Compared with Example 1, the aging temperature was increased to 120° C., and the amount of other materials and operating conditions were the same as in Example 1, and Sample 3 was obtained.

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Abstract

The present invention relates to preparation process of hydroprocessing catalyst. The process includes the steps of: neutralizing acid aluminum salt solution and basic aluminate solution, ageing, filtering, washing, forming, drying, roasting, soaking and activating to obtain the catalyst. The ageing is completed in the conditions of temperature higher than the neutralizing temperature and pH value higher than the neutralizing pH value. The process is simple, and the prepared catalyst has great pore size and great pore volume, high depurating activity and high stability, and may be used in heavy oil and residual oil hydroprocessing process.

Description

technical field [0001] The invention relates to a preparation method of a residual oil hydrotreating catalyst. Background technique [0002] Catalyst properties such as pore size play an important role in the stability of catalyst activity. For heavy distillate oil, especially residual oil, due to the high content of metal impurities (such as Ni, V, etc.), during the hydrotreating process, metal impurities in heavy distillate oil or residual oil are not only deposited between the catalyst particles , also deposited in the catalyst particles. Studies have shown that the main reason for the deactivation of residual oil hydrotreating catalysts, especially demetallization catalysts, is that metal impurities deposit near the catalyst pores, blocking the pores and deactivating the catalysts. If the pore size is small, metal impurities can easily block the pores of the catalyst, making it impossible for reactants to enter the pores of the catalyst. If the pore diameter of the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/85B01J21/04C10G45/08
Inventor 刘喜来赵愉生隋宝宽安晟张雪梅
Owner CHINA PETROLEUM & CHEM CORP