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A kind of hydrotreating catalyst and its preparation method and application

A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of excessive metal dispersion, unfavorable type II metal active phase, Strong interaction, etc.

Active Publication Date: 2018-06-26
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, excessive dispersion of metals is not conducive to the formation of type II metal active phases during the vulcanization process, and the adsorption and hydrogenation removal activity of nitrides with complex molecular structures is not high.
[0007] In summary, the interaction between the conventional alumina support and the active metal is too strong, resulting in a high degree of dispersion of the active metal, which is not conducive to the reduction and sulfidation of the active metal, resulting in a high dispersion of the supported hydrodenitrogenation catalyst based on alumina. , The problem of poor vulcanization performance, the simple surface modification of alumina carrier or the addition of organic additives in the metal impregnation solution will have the problem of unsatisfactory active metal dispersion and vulcanization degree

Method used

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  • A kind of hydrotreating catalyst and its preparation method and application

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Embodiment 1

[0041] The present embodiment provides a kind of preparation method of hydrotreating catalyst, it comprises the following steps:

[0042] Step 1: Weigh 200g of alumina dry rubber powder and 8g of turmeric powder, add 90mL of ammonium bicarbonate solution (prepared by adding 12g of ammonium bicarbonate per 90mL of deionized water) and mix well; then add 90mL of nitric acid The solution (prepared by adding 10 g of nitric acid with a concentration of 65% by mass for every 90 mL of deionized water) was mixed and stirred evenly to obtain the material. Knead the material on the screw extruder for 15 minutes to make a clover strip-shaped wet material with a diameter of 1.5 mm, then dry the clover strip-shaped wet material naturally for 24 hours, then dry it at 120 ° C for 4 hours, and then transfer it to In a muffle furnace, calcinate at 700°C for 3 hours to obtain an alumina carrier, which is crushed into 20-40 mesh granules for future use.

[0043] Step 2: Weigh 50g of the above c...

Embodiment 2

[0046] The present embodiment provides a kind of preparation method of hydrotreating catalyst, it comprises the following steps:

[0047] Step 1: Weigh 200g of pseudo-boehmite powder and 8g of turmeric powder, add 90mL of ammonium bicarbonate solution (prepared by adding 12g of ammonium bicarbonate per 90mL of deionized water) and mix well; then add 90mL Nitric acid solution (prepared by adding 10 g of nitric acid with a mass percent concentration of 65% per 90 mL of deionized water) was mixed and stirred evenly to obtain materials. Knead the material on the screw extruder for 15 minutes to make a clover strip-shaped wet material with a diameter of 1.5 mm, then dry the clover strip-shaped wet material naturally for 24 hours, then dry it at 120 ° C for 4 hours, and then transfer it to In a muffle furnace, calcinate at 700°C for 3 hours to obtain an alumina carrier, which is crushed into 20-40 mesh granules for future use.

[0048] Step 2: Weigh 50g of the above crushed alumina...

Embodiment 3

[0051] The present embodiment provides a kind of preparation method of hydrotreating catalyst, it comprises the following steps:

[0052] Step 1: Weigh 200g of pseudo-boehmite powder and 8g of turmeric powder, add 90mL of ammonium bicarbonate solution (prepared by adding 12g of ammonium bicarbonate per 90mL of deionized water) and mix well; then add 90mL Nitric acid solution (prepared by adding 10 g of nitric acid with a mass percent concentration of 65% per 90 mL of deionized water) was mixed and stirred evenly to obtain materials. Knead the material on the screw extruder for 15 minutes to make a clover strip-shaped wet material with a diameter of 1.5 mm, then dry the clover strip-shaped wet material naturally for 24 hours, then dry it at 120 ° C for 4 hours, and then transfer it to In a muffle furnace, calcinate at 700°C for 3 hours to obtain an alumina carrier, which is crushed into 20-40 mesh granules for future use.

[0053] Step 2: Weigh 50g of the above crushed alumina...

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Abstract

The invention provides a hydrotreating catalyst and a preparation method and application thereof .The preparation method of the hydrotreating catalyst comprises the steps that firstly, an aluminum oxide carrier is prepared by adopting a complexing agent roasting-drying combined mode; secondly, complexing agent surface imprednation is conducted on the aluminum oxide carrier, and the aluminum oxide carrier is roasted and modified in inert gas to obtain a modified aluminum oxide carrier; lastly, metal active components are supported through isovolumetric stepped impregnation and directly dried without needing roasting, and then the hydrotreating catalyst is finally prepared .According to the preparation method of the hydrotreating catalyst, the problem that the ratio of L acid on the surface of the aluminum oxide carrier is high can be effectively solved, and meanwhile the strong interaction between active metal and the aluminum oxide carrier can be effectively weakened; the prepared hydrotreating catalyst is suitable for the hydrodesulfurization and hydrodenitrification process of coker gas oil with the high sulfur and nitrogen content and not only has the good hydrodenitrification activity but also has the good hydrodesulfurization activity.

Description

technical field [0001] The invention belongs to the field of catalysts, and relates to a hydrogenation treatment catalyst, a preparation method thereof and an application of the hydrogenation treatment catalyst in hydrodenitrogenation and desulfurization of coking wax oil. Background technique [0002] With the intensification of the trend of heavy and inferior crude oil in the world, and the continuous improvement of gasoline and diesel quality requirements in environmental protection regulations, inferior heavy oil is delayed coking, coking wax oil is hydrotreated as raw material for catalytic cracking or hydrocracking. In order to maximize the yield of light oil products, the production of high-quality and low-quality coker wax oil has become the preferred process for delayed coking. Therefore, the hydrotreating of low-quality coker gas oil with high nitrogen content puts forward higher performance requirements for the catalyst. [0003] At present, industrial catalysts ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883B01J23/888B01J23/882C10G45/08
CPCB01J23/002B01J23/882B01J23/883B01J23/888B01J35/1019B01J35/1038B01J35/1042B01J35/1061B01J2523/00C10G45/08C10G2300/202C10G2300/70B01J2523/31B01J2523/68B01J2523/847B01J2523/69B01J2523/845
Inventor 周亚松陈楠魏强张玲玲刘亭亭丁思佳周文武
Owner PETROCHINA CO LTD
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