A hydrogenation catalyst with non-uniform distribution of active metal components and its preparation

A non-uniform distribution, hydrogenation catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of catalyst deactivation and achieve the preparation method Simple, good metal performance, low production cost effect

Active Publication Date: 2015-09-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the hydrotreating process of such raw oil, these impurities will be adsorbed on the surface of the catalyst to cover the active center or deposited in the pores of the catalyst to block the pores, resulting in the deactivation of the catalyst

Method used

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  • A hydrogenation catalyst with non-uniform distribution of active metal components and its preparation
  • A hydrogenation catalyst with non-uniform distribution of active metal components and its preparation
  • A hydrogenation catalyst with non-uniform distribution of active metal components and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Take a portion of the pseudo-boehmite wet strip and dry it at 200° C. for 5 hours. Measure its water absorption rate to be 0.76.

[0050] Weigh 4.0g basic nickel carbonate, 9.0g molybdenum oxide, and 1.7g phosphoric acid, add water and heat to dissolve to form 109ml nickel-molybdenum-phosphorus solution, and impregnate 143g of the aforementioned carrier with the solution for 1 hour. Thereafter, it was dried at 120° C. for 4 hours to obtain catalyst B1. Catalyst B1 metal content and distribution are listed in Table 1.

Embodiment 2

[0052] A portion of the wet pseudo-boehmite strip was taken and dried at 240° C. for 5 hours. Measure its water absorption rate to be 0.76.

[0053] Weigh 2.5g basic cobalt carbonate, 6.0g molybdenum oxide, and 1.2g phosphoric acid, add water and heat to dissolve to form 109ml cobalt molybdenum phosphorus solution, and impregnate 143g of the aforementioned carrier with the solution for 1 hour. Thereafter, it was dried at 120° C. for 4 hours to obtain catalyst B2. Catalyst B2 metal content and distribution are listed in Table 1.

Embodiment 3

[0055] A portion of the wet pseudo-boehmite strip was taken and dried at 240° C. for 5 hours. Measure its water absorption rate to be 0.76.

[0056] Weigh 25.2g basic nickel carbonate, 64.4g molybdenum oxide, 12.0g phosphoric acid, add water and heat to dissolve into 429ml nickel-molybdenum-phosphorus solution, and impregnate 143g of the aforementioned carrier with the solution for 5 hours. After filtration, it was dried at 120° C. for 4 hours to obtain catalyst B3. Catalyst B3 metal content and distribution are listed in Table 1.

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Abstract

Disclosed are an active metal component nonuniformly distributed hydrogenation catalyst and its preparation. The catalyst contains a formed hydrated alumina carrier, at least one metal salt of VIII group unprecious metal and at least one metal salt of VIB group metal loading on the carrier, wherein distribution is along radial cross section of the catalyst; the ratio of the external surface concentration to the center concentration of the VIII group metal component is 0.1-0.9; and the ratio of the external surface concentration to the center concentration of the VIB group metal component is 0.1-0.8. In comparison with present technological methods, the hydrogenation catalyst composition provided by the invention has excellent heavy oil hydrodemetallization performance and simultaneously has good miscible metal performance. In addition, the preparation method of the catalyst provided by the invention is simple, and the product cost of the catalyst is obviously lower than that of a catalyst prepared by present methods.

Description

technical field [0001] The invention relates to a hydrogenation catalyst catalyst and a preparation method thereof. Background technique [0002] Heavy oil not only contains sulfur, nitrogen and other impurities, but also contains a large amount of metal impurities such as Ni, V, Fe, Ca, asphaltene and colloid. During the hydrotreating process of such raw oil, these impurities will be adsorbed on the surface of the catalyst to cover the active centers or deposited in the pores of the catalyst to block the pores, thereby causing the deactivation of the catalyst. Therefore, the metal storage capacity and anti-coking performance of the catalyst used in the hydrotreating process of residual oil will directly affect the service life of the catalyst. [0003] CN101768470A discloses a heavy oil hydrotreating catalyst, containing a carrier and an effective amount of at least one metal component selected from group VIII and at least one metal component selected from group VIB, chara...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J23/888C10G45/08
Inventor 李丁健一杨清河曾双亲贾燕子聂红李大东
Owner CHINA PETROLEUM & CHEM CORP
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