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Residual oil hydrogenation metal removing catalyst and its preparing method

A technology of residual oil hydrogenation and catalyst, which is applied in the direction of refining to remove heteroatoms, etc., can solve the problems of large amount of organic pore-enlarging agent, low content, poor pore-expanding effect, etc., and achieves easy implementation, simple operation, hydrogenation dehydrogenation The effect of high metal activity

Active Publication Date: 2006-08-30
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to aim at the existing method for preparing hydrodemetallization catalyst, when adopting the composition of pseudo-boehmite and organic pore-enlarging agent to prepare macroporous alumina carrier, the consumption of organic pore-enlarging agent is large, when When the amount of organic pore-enlarging agent is low, the pore-enlarging effect is poor, and the activity of the hydrodemetallization catalyst prepared thereby is low. A new pseudo-boehmite composition with a low content of organic pore-enlarging agent is provided. Process for highly active hydrodemetallization catalysts and catalysts prepared by the process

Method used

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  • Residual oil hydrogenation metal removing catalyst and its preparing method
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preparation example Construction

[0040] The preparation method of the hydrodemetallization catalyst provided by the present invention overcomes the disadvantages that in the existing method, when the amount of the organic pore-enlarging agent is low, the pore-enlarging effect is poor, and the carrier thus prepared is difficult to be used to prepare the hydrodemetallization catalyst , the method is simple and easier to implement. In addition, the catalysts provided by this method have high hydrodemetallization activity. It is especially suitable for use as a catalyst for hydrodemetallization of heavy hydrocarbon raw materials, including crude oil, atmospheric residue, vacuum residue and other raw materials.

[0041] The present invention is illustrated by examples below.

[0042] The reagents used in the examples are chemically pure reagents unless otherwise specified.

example 1

[0045] Adopt aluminum hydroxide (Shandong aluminum plant product) and sodium hydroxide (Beijing chemical plant product) reaction preparation concentration to be the NaAlO of 200 grams alumina / liter 2 solution, this solution was mixed with a concentration of 90 grams of alumina / liter of Al 2 (SO 4 ) 3 Solution (Changling Oil Refinery Catalyst Factory product) joins in the gel forming tank of a 2 liters simultaneously with the mode of concurrent flow, puts 1.5 liters of water in advance in the tank, NaAlO 2 The flow rate of the solution is 1.1 liters / hour, adjust the Al 2 (SO 4 ) 3 The flow rate of the solution is such that the gelling pH value is 8, and the temperature of the gelling process is 50°C. The slurry generated by the gelling is collected in an aging tank. After collecting for 20 minutes, the slurry is switched to another aging tank for collection. Add sodium carbonate to the collected aging tank to adjust the pH to 10, then age for 50 minutes, filter, and wash 4...

example 2

[0053] Get 20 liters of concentration and be the sodium metaaluminate solution (preparation method is the same as example 1) of 20 grams of aluminum oxide / liter, be placed in a 25 liters of gelling tank, initial temperature 15 ℃, pass into carbon dioxide from the bottom of gelling tank A mixture of carbon dioxide and air with a content of 30% by volume, the flow rate of the mixture is 35 meters 3 / hour, reacted for 5 minutes, the pH value dropped to 6.8 (end point pH value), and the reaction temperature was 28°C at this time. The boehmite wet filter cake was gelled and washed twice in the same way to obtain a total of about 8 kg of pseudo-boehmite wet filter cake. Take 50 grams of the wet filter cake and dry it at 130°C for 3 hours. X-ray diffraction Its relative crystallinity was determined to be 58%.

[0054] Get this wet filter cake 5.5 kilograms (Al 2 o 3 content of 14% by weight) mixed with 7.7 grams of polyethylene glycol with a molecular weight of 2000, added water ...

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Abstract

The residual oil hydrodemetalizing catalyst contains a kind of macroporous alumina carrier and supported metal components Mo and / or W and Co and / or Ni. The carrier has pore volume of 0.9-1.3 ml / g, pores of diameter smaller than 20 nm in 55-85 % of total pore volume, pores of diameter 20-100 nm in 7-25 % of total pore volume and pores of diameter over 100 nm in 7-25 % of total pore volume. The preparation process of the carrier includes forming and roasting pseudo-thin diasphore composition containing organic pore expander. Compared with available technology, the present invention has the advantages of relatively small organic pore expander consumption, obvious pore expanding effect and high catalyst activity.

Description

technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, more specifically to a residual oil hydrodemetallization catalyst and a preparation method thereof. Background technique [0002] Hydrodemetallization catalysts used for heavy oil, especially for vacuum residues with high metal content, are prone to rapid decline in activity and deactivation due to the deposition of metal impurities such as nickel and vanadium. Catalysts with larger pore volume and larger pore diameter have strong metal and carbon storage capacity, which can slow down the deactivation of the catalyst and prolong the operation period of the catalyst. [0003] The pore structure of the catalyst is determined by the carrier that constitutes the catalyst. Therefore, the preparation of a carrier with a larger pore volume and larger pore diameter is an important step in the preparation of residual oil, especially for the preparatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/06
Inventor 杨清河曾双亲朱立康小洪聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP