Hydrocracking catalyst as well as preparation method and application thereof

A hydrocracking and catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problem of differential matching between hydrogenation activity and cracking activity, unable to achieve catalyst, and unable to achieve differential matching of catalysts And other issues

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

Regardless of whether the catalyst is prepared by the kneading method or the impregnation method, the hydrogenation activity and cracking activity of different parts inside and outside the catalyst are evenly distributed. The current preparation method cannot realize the differential matching of the hydrogenation activity and cracking activity inside and outsi...

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Molecular sieve preparation method:

[0041] (1) Take the NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 1.7mol / L according to the liquid-solid ratio of 10:1, exchange at 80°C for 1 hour, repeat this process twice, and the Y molecular sieve after exchange Na content in Na 2 O is calculated as 2.6%;

[0042] (2) Hydrothermally treat the Y molecular sieve obtained in step (1) at 620°C and 0.1Mpa for 2 hours, and repeat this process twice;

[0043] (3) The molecular sieve obtained in step (2) is mixed with dilute nitric acid according to the liquid-solid ratio of 10:1 (the concentration of dilute nitric acid in the solution is controlled by H+ ion concentration meter to 1mol / L), and then the temperature is raised to 90°C for 3 hours.

[0044] (4) Take the Y molecular sieve treated with dilute nitric acid solution in step (3), mix it with sodium nitrate with a concentration of 1.2mol / L at a liquid-solid rati...

Embodiment 2

[0051] Molecular sieve preparation method:

[0052] (1) Take the original NaY molecular sieve powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 2mol / L according to the liquid-solid ratio of 10:1, exchange at 60°C for 1 hour, repeat this process twice, and the NaY molecular sieve after exchange content in Na 2 O is calculated as 2.5%;

[0053] (2) Hydrothermally treat the Y molecular sieve obtained in step (1) at 640°C and 0.1Mpa for 2 hours, and repeat this process twice;

[0054] (3) The molecular sieve obtained in step (2) is mixed with dilute nitric acid according to the liquid-solid ratio of 10:1 (the concentration of dilute nitric acid in the solution is controlled by H+ ion concentration meter to 1.4mol / L), and then the temperature is raised to 90°C for 2 hours of constant temperature reaction.

[0055] (4) Take the Y molecular sieve treated with dilute nitric acid solution in step (3), mix it with sodium nitrate with a concentrati...

Embodiment 3

[0062] Molecular sieve preparation method:

[0063] (1) Take the NaY molecular sieve raw powder prepared in the laboratory, mix it with ammonium nitrate with a concentration of 2mol / L according to the liquid-solid ratio of 10:1, exchange at 80°C for 1 hour, repeat this process once, and the NaY molecular sieve after exchange content in Na 2 O is calculated as 2.9%;

[0064] (2) Hydrothermally treat the Y molecular sieve obtained in step (1) at 660°C and 0.1Mpa for 3 hours, and repeat this process once;

[0065] (3) The molecular sieve obtained in step (2) is mixed with dilute nitric acid according to the liquid-solid ratio of 10:1 (the concentration of dilute nitric acid in the solution is controlled by H+ ion concentration meter to 1.6mol / L), and then heated to 70°C for 2 hours at constant temperature.

[0066] (4) Take the Y molecular sieve treated with dilute nitric acid solution in step (3), mix it with sodium nitrate with a concentration of 1.5mol / L according to the liq...

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Abstract

The invention discloses a hydrocracking catalyst as well as a preparation method and application thereof. The method comprises the following steps: (1) molding a modified Y molecular sieve, amorphous silica-alumina and/or aluminum oxide, drying and roasting the molded mixture to obtain a catalyst carrier, wherein the content of sodium in the modified Y molecular sieve is 1-8wt%; and (2) carrying out saturated impregnation on the catalyst carrier prepared in the step (1) by adopting a non-polar organic solvent, and then carrying out drying treatment until the content of the non-polar organic solvent in the catalyst carrier is 20-90% of the saturated adsorption capacity of the catalyst carrier. (3) performing ammonium salt ion exchange, drying and roasting treatment on the material obtained in the step (2); and (4) introducing active metal into the material obtained in the step (3), and drying and roasting the materials to obtain the final catalyst. The catalyst prepared by the method can reduce cracking of high value-added lubricating oil base oil to generate other low-value products, and especially reduce excessive cracking of straight-chain alkane high-viscosity index components in the lubricating oil base oil.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and its preparation method and application, in particular to a prolific high-quality lubricating oil base oil hydrocracking catalyst and its preparation method and application. Background technique [0002] The hydrocracking process includes two processes of cracking and hydrogenation. On the one hand, heavy crude oil is cracked and converted into light distillate components, and on the other hand, hydrogenation is carried out while cracking to improve product quality. For hydrocracking catalysts, the allocation method of hydrogenation activity and cracking activity determines the reaction characteristics and performance of the catalyst. [0003] At present, the preparation methods of hydrocracking catalysts are mainly divided into two categories: kneading method and impregnation method. The kneading method is to mix the active metal component with molecular sieve, alumina and amorphous silicon-aluminu...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J35/10B01J37/02B01J37/10B01J37/30C10G67/02
CPCB01J29/166B01J35/1019B01J35/1038B01J37/0201B01J37/10B01J37/30C10G67/02B01J2229/18Y02P20/52
Inventor 郭蓉柳伟杜艳泽秦波高杭张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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