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Hydrotreating catalyst and preparation method thereof

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of uneven distribution of phosphorus atoms, phosphorus atoms affecting catalyst desulfurization , denitrification activity, excessive concentration of phosphorus atom distribution, etc.

Active Publication Date: 2021-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Due to the complexity and inhomogeneity of the carrier pore structure and surface properties in the above-mentioned phosphorus modification process, there is generally a technical problem of uneven distribution of phosphorus atoms on the surface of the carrier, especially the distance between phosphorus atoms, or the distance between phosphorus atoms on the carrier. The distribution density of the surface is difficult to adjust: in the small pores and strong polar regions of the carrier, there may be excessive concentration of phosphorus atom distribution, on the contrary, in the large pores and weak polar regions of the carrier
The uneven distribution of phosphorus atoms will seriously affect the desulfurization and denitrification activities of the catalyst

Method used

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  • Hydrotreating catalyst and preparation method thereof
  • Hydrotreating catalyst and preparation method thereof
  • Hydrotreating catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]This example introduces the use of binaphthol phosphate as a phosphorus modification aid to prepare a phosphorus-modified hydrogenation catalyst.

[0033] Weigh 400.0 g of dry rubber powder, add 6.0 g of citric acid and 7.0 g of turnip powder, mix well, then add 340.0 g of nitric acid with a mass fraction of 2.0%. After rolling for 20.0 min, extrude the strips with a clover orifice plate with a diameter of 1.7 mm. Dry at 120°C for 4.0h and then bake at 500°C for 4.0h. The calcined carrier is denoted as S-1.

[0034] Weigh 17.3 g of binaphthol phosphate, dissolve it in 80.0 g of ethanol, weigh 100.0 g of S-1 carrier, add an equal volume of the above phosphorus-containing solution to impregnate, leave at room temperature for 12.0 h, and dry at 80°C for 18.0 h to obtain The desired phosphorus-modified carrier is denoted as S-2.

[0035] S-2 was impregnated with an equal volume of impregnation solution containing Mo and Ni, dried at 120°C for 4.0 h, and calcined at 450°C ...

Embodiment 2

[0038] This example introduces the preparation of a phosphorus-modified hydrogenation catalyst by using binaphthol phosphate and its Friedel-Crafts alkylation reactant as a phosphorus-modified auxiliary agent. The preparation of alumina carrier S-1 is the same as that in Example 1.

[0039] Weigh 17.3 g of binaphthol phosphate, dissolve in 100.0 g of n-butanol, add 25.0 g of anhydrous aluminum chloride, control the reaction temperature at 20.0 ° C, and the reaction time is 8.0 h. After the reaction, pour the reaction solution into a beaker of concentrated hydrochloric acid containing ice water, separate the water layer, and dry the organic layer to obtain the organic phosphorus source. Dissolve the above organic phosphorus source in 80.0 g of toluene, and weigh the S-1 carrier 100.0 g was added to the above-mentioned phosphorous-containing solution to impregnate in an equal volume. After standing at room temperature for 12.0 h, it was dried at 90°C for 24.0 h to obtain the des...

Embodiment 3

[0043] This example introduces the preparation of a phosphorus-modified hydrogenation catalyst by using binaphthol phosphate and its Friedel-Crafts alkylation reactant as a phosphorus-modified auxiliary agent. The preparation of alumina carrier S-1 is the same as that in Example 1.

[0044] Weigh 17.3 g of binaphthol phosphate, dissolve in 100.0 g of isobutanol, add 30.0 g of anhydrous aluminum chloride, control the reaction temperature to 20.0 ° C, and the reaction time to 8.0 h. After the reaction, pour the reaction solution into a concentrated hydrochloric acid beaker containing ice water, separate the water layer, and dry the organic layer to obtain an organic phosphorus source. Dissolve the above organic phosphorus source in 80.0 g of xylene, and weigh S-1 Add 100.0 g of the carrier, add the above-mentioned phosphorus-containing solution to impregnate in equal volume, leave it at room temperature for 12.0 h, and then dry it at 90°C for 24.0 h to obtain the desired phospho...

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Abstract

The invention discloses a hydrotreating catalyst and a preparation method thereof. The method comprises the following steps: (1) introducing a compound shown as a formula (I) into an alumina carrier; and (2) loading an active metal on the alumina carrier introduced with the compound shown in the formula (I) in the step (1), and drying and roasting the material to obtain the final catalyst; wherein R1-R10 in the compound shown in the formula (I) is at least one of -H, an alkane substituent group or an amide substituent group, preferably an alkane substituent group or an amide substituent group. According to the hydrotreating catalyst, the desulfurization and denitrification activity of the hydrotreating catalyst is remarkably improved.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst and a preparation method thereof, in particular to a high-activity wax oil hydrogenation treatment catalyst and a preparation method thereof. Background technique [0002] With the increasingly stringent environmental regulations, the light and clean production of fossil fuels is imperative. At the same time, the trend of heavy and inferior petroleum resources is intensifying, resulting in more sulfur-containing, nitrogen-containing compounds, polycyclic aromatic hydrocarbons and other impurities in petroleum, which will seriously affect the quality and performance of petrochemical products and the processability of petroleum intermediates performance. Hydrotreating means can effectively remove these impurities, so the importance in the petrochemical industry is increasing year by year. [0003] Hydrotreating catalyst is a supported catalyst with relatively complex composition. In terms of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C10G45/08
CPCB01J31/26C10G45/08C10G2300/202B01J35/635B01J35/633B01J35/647B01J35/615
Inventor 丁思佳杨占林王继锋蒋淑娇姜虹王会刚刘奕
Owner CHINA PETROLEUM & CHEM CORP
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