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Hydrodenitrification catalyst as well as preparation method and application thereof

A hydrodenitrogenation and catalyst technology, which is applied in catalyst activation/preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc. The effect of processability, improved state of existence, good desulfurization and carbon residue removal

Active Publication Date: 2022-05-06
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 2000.0g of alumina dry rubber powder, add 40.0g of citric acid and 50.0g of scallop powder, mix well, add 1800.0g of aqueous solution containing 4.0% acetic acid mass fraction, roll for 15.0min, and use clover with a diameter of 2.0mm Orifice extruded strips. After drying at 130°C for 6.0h, it was calcined at 650°C for 3.0h. The calcined carrier is designated as S-0.

[0038] Weigh 68.0g of ammonium heptamolybdate and 30.0g of 25wt% ammonia water to prepare a 180mL aqueous solution, and the solution is designated as MQ-1. 200g S-0 was impregnated with 180mL of MQ-1, dried at 140°C for 4.0h, and then calcined at 450°C for 2.0h to obtain 3 The catalyst intermediate is denoted as MA-1.

[0039] Weigh 50 g of MA-1, 200 g of carbon tetrachloride, and 2.0 g of nickel tetracarbonyl into an autoclave with a volume of 500 mL, feed ether gas, maintain a pressure of 4.0 MPa, and a temperature of 200 ° C for 5 h. Afterwards, the temperature was lowered to 90°C, carbon mon...

Embodiment 2

[0043] The preparation process of the carrier S-0 and the MA-1 of the molybdenum-containing catalyst intermediate is the same as in Example 1.

[0044] Weigh 50.0 g of MA-1, 150 g of carbon tetrachloride, and 2.0 g of dicobalt octacarbonyl into an autoclave with a volume of 500 mL, feed ether gas, maintain a pressure of 4.0 MPa, and a temperature of 200°C for 5 hours of reaction. Afterwards, the temperature was lowered to 90° C., carbon monoxide was introduced, the pressure was raised to 12.0 MPa, and the reaction was carried out for 5 hours. The catalyst was taken out and dried at 120° C. for 2 hours. The obtained material was designated as MT-2.

[0045] Weigh 8.2 g of cobalt nitrate hexahydrate, 10.0 g of EDTA, and dissolve them in 50.0 mL of aqueous solution. The obtained solution is denoted as BQ-2. Impregnate MT-2 with BQ-2 and dry at 120° C. for 4.0 h. The obtained catalyst is denoted as BQ-2. for TC-2.

[0046] Take 10.0 g TC-2 and put it into a tubular reactor for pr...

Embodiment 3

[0048] The preparation process of the carrier S-0 and the MA-1 of the molybdenum-containing catalyst intermediate is the same as in Example 1.

[0049] Weigh 50.0 g of MA-1, 150 g of carbon tetrachloride, and 2.0 g of nickel tetracarbonyl, and add them into an autoclave with a volume of 500 mL, feed in methyl ether gas, maintain a pressure of 4.0 MPa, and a temperature of 200 ° C for 5 h. Afterwards, the temperature was lowered to 90° C., carbon monoxide was introduced, the pressure was raised to 12.0 MPa, and the reaction was carried out for 5 hours. The catalyst was taken out and dried at 120° C. for 2 hours. The obtained material was designated as MT-3.

[0050] Weigh 8.2 g of nickel nitrate hexahydrate, 2.0 g of ethylenediamine, dissolve in 50.0 mL of water, and record the obtained solution as BQ-3, impregnate MT-3 with BQ-3, and dry at 120 ° C for 4.0 h to obtain the catalyst Recorded as TC-3.

[0051] Take 10.0g TC-3, put it into a tubular reactor, and carry out the pre...

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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 and a group VIII metal element, at least part of the molybdenum element exists in the catalyst in the form of carbonyl molybdenum, at least part of the group VIII metal element exists in the catalyst in the form of a group VIII metal complex, and a complexing agent is a compound containing a nitrogen element and lone pair electrons. The hydrodenitrogenation catalyst is used in a heavy oil hydrotreating process, can deeply remove nitrogen-containing compounds in residual oil, and has good stability.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a hydrodenitrogenation catalyst and a preparation method thereof, in particular to a residual oil hydrodenitrogenation catalyst and a preparation method thereof, and is especially suitable for producing heavy oil hydrocracking with residual oil as a raw material raw material. 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 util...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/20B01J31/22B01J35/10B01J37/02B01J37/20C10G45/08
CPCB01J31/20B01J31/1805B01J31/2217B01J37/0201B01J37/20C10G45/08C10G2300/202C10G2300/201C10G2300/70B01J2531/845B01J2531/847B01J35/638B01J35/635B01J35/615Y02P20/52
Inventor 蒋淑娇袁胜华杨刚张成
Owner CHINA PETROLEUM & CHEM CORP
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