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Hydrodenitrification catalyst as well as preparation method and application thereof

A technology for hydrodenitrogenation and catalyst, which can be used in catalyst activation/preparation, chemical instruments and methods, and hydrorefining of aromatic hydrocarbons, etc., and can solve problems such as limited utilization of active metals.

Active Publication Date: 2022-06-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can highly disperse the metal active components on the surface of the inner pores of the carrier, thereby improving the activity of the catalyst, but the utilization rate of the active metal in this preparation process is limited.

Method used

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  • Hydrodenitrification catalyst as well as preparation method and application thereof
  • Hydrodenitrification catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 40.0 g of nickel acetate and 10.0 g of amine triacetic acid to QL-2, stir thoroughly for 20 minutes, add 4.0 g of nonylphenol polyoxyethylene ether-8, and stir for 20 minutes, the obtained colloid is designated as QJ- 2.

[0053] S-0 was impregnated with QJ-2, air-dried for 12.0 h, and dried at 140 °C for 4 hours. The obtained catalyst was designated as CM-2.

[0054] Example 3

The preparation method of carrier S-0 is the same as that in Example 1.

[0055] Weigh 60.5 g of molybdenum trioxide, 7.5 g of 85% phosphoric acid by mass fraction, 200 g of deionized water, heat at 80 ºC for 2.0 h, and record the obtained solution as QP-3.

[0056] Add 26.4 g of ascorbic acid to QP-3, heat at 75°C for 2.0 h, and the obtained liquid is designated as QL-3.

Embodiment 2

[0058] S-0 was impregnated with QJ-3, air-dried for 12.0 h, and dried at 140 °C for 4 hours. The obtained catalyst was designated as CM-3.

[0059] Example 4

The preparation method of carrier S-0 is the same as that in Example 1.

[0060] Take 50.4 g of molybdenum trioxide, 6.0 g of ammonium dihydrogen phosphate, and 200 g of ionized water, heat at 80 ºC for 2.0 h, and the obtained solution is designated as QP-4.

[0061] Add 19.2 gMoS to QP-4 2 , heated at 85 °C for 3.0 h, and the liquid obtained after filtration was designated as QL-4.

[0062] Add 47.3g of nickel nitrate hexahydrate and 10.0g of dimethylethanolamine to QL-4, and after fully stirring for 20 minutes, add 4.0g of dodecylphenol polyoxyethylene ether-8, and after fully stirring for 20 minutes, the obtained The colloid is recorded as QJ-4.

Embodiment 3

[0064] Comparative example 1

[0065] Add 47.3 g of nickel nitrate hexahydrate to QP-1, and stir it thoroughly for 20 min, the resulting solution is designated as DQP-1.

[0066] S-0 was impregnated with DQP-1, air-dried for 12.0 h, and dried at 140 °C for 4 hours. The obtained catalyst was designated as DCM-1.

[0067] Comparative example 2

[0068] After adding 88.6 g nickel citrate and 7.0 g monoethanolamine to QP-1 and stirring for 20 minutes, the obtained solution was designated as DQP-2.

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Abstract

The invention discloses a hydrodenitrification catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier, a molybdenum element, a group VIII metal element, an electronic auxiliary agent and a surfactant, at least part of the molybdenum element exists in the catalyst in the form of phosphomolybdenum blue, and the electronic auxiliary agent is a soluble nitrogen-containing compound containing lone pair electrons. And the surfactant is one or more of long-chain fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, polyoxyethylene fatty acid ester, polyoxyethylene alkylamine, polyoxyethylene alkylolamides and polyether. The hydrodenitrogenation catalyst is used in a heavy oil hydrotreating process, can deeply remove nitrogen-containing compounds in heavy oil, and has good stability.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a hydrogenation denitrification catalyst and a preparation method thereof, in particular to a hydrogenation catalyst for deep denitrification of heavy oil, which provides reaction raw materials for heavy oil deep cracking reaction or residual oil hydrocracking reaction . Background technique [0002] With the adjustment of energy structure and the change of supply and demand relationship, the production capacity of fossil fuels in the petrochemical industry is gradually declining, while the production capacity of chemical raw materials needs to be strengthened urgently. Hydrocracking is currently the main process for producing chemical raw materials in the petrochemical industry, and its economic and social benefits are remarkable. The residual oil can be used as a supplementary raw material for heavy oil hydrocracking through deep denitrification treatment, and the utilizati...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J35/10B01J37/00B01J37/02B01J37/16B01J37/20C10G45/08C10G45/50
CPCB01J27/19B01J23/002B01J37/0018B01J37/0207B01J37/0213B01J37/16B01J37/0203B01J37/20C10G45/08C10G45/50B01J2523/00C10G2300/202B01J35/635B01J35/615B01J2523/31B01J2523/51B01J2523/68B01J2523/847Y02P20/52
Inventor 蒋淑娇袁胜华
Owner CHINA PETROLEUM & CHEM CORP
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