Hydrocracking catalyst for maximum production of low-solidifying point diesel oil and preparation method and application thereof

A technology of catalyst and diesel oil, which is applied in the field of hydrocracking catalyst for the largest production of low-point diesel oil and its preparation and application, and achieves the effects of low preparation cost, low freezing point, and strong isomerization performance

Active Publication Date: 2017-11-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pore size of the prepared secondary pore structure is mainly concentrated in 3~5nm, and it is still powerless for the conversion of some aromatic hydrocarbon macromolecules with two rings and above. Therefore, the preparation of molecular sieves with larger pore structures is a very important scientific research direction.

Method used

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  • Hydrocracking catalyst for maximum production of low-solidifying point diesel oil and preparation method and application thereof
  • Hydrocracking catalyst for maximum production of low-solidifying point diesel oil and preparation method and application thereof
  • Hydrocracking catalyst for maximum production of low-solidifying point diesel oil and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Mix alumina powder, modified USY molecular sieve and modified β zeolite powder evenly, then add acid solution, fully roll and shape, then dry and roast to obtain the catalyst carrier;

[0029] (2) impregnating the catalyst carrier obtained in step (1) with an impregnating solution containing active metal components, then drying and calcining to obtain a hydrocracking catalyst. Catalyst properties are listed in Table 1.

[0030] Step (1) The preparation steps of the modified USY molecular sieve are as follows: the silica / alumina molar ratio is 20, the specific surface area is 760m 2 / g of hydrogen-type USY molecular sieve was added to 0.55mol / L tetraethylammonium hydroxide solution, the mass ratio of the amount of USY molecular sieve added to the solution was 1:10, and then treated at 70°C for 1.5 hours, and finally Wash until the pH value is less than 10 to obtain the modified USY molecular sieve. The modified USY molecular sieve has the following properties after...

Embodiment 2

[0033] (1) Mix alumina powder, modified USY molecular sieve and modified β zeolite powder evenly, then add acid solution, fully roll and shape, then dry and roast to obtain the catalyst carrier;

[0034] (2) impregnating the catalyst carrier obtained in step (1) with an impregnating solution containing active metal components, then drying and calcining to obtain a hydrocracking catalyst. Catalyst properties are listed in Table 1.

[0035] Step (1) The preparation steps of the modified USY molecular sieve are as follows: the silica / alumina molar ratio is 33, the specific surface area is 820m 2 / g of hydrogen-type USY molecular sieve is added to 0.60mol / L tetrapropyl ammonium hydroxide solution, the mass ratio of the amount of USY molecular sieve added to the solution is 1:15, and then treated at 80°C for 1.0 hour, and finally Wash until the pH value is less than 10 to obtain the modified USY molecular sieve. The modified USY molecular sieve has the following properties after ...

Embodiment 3

[0038] (1) Mix alumina powder, modified USY molecular sieve and modified β zeolite powder evenly, then add acid solution, fully roll and shape, then dry and roast to obtain the catalyst carrier;

[0039] (2) impregnating the catalyst carrier obtained in step (1) with an impregnating solution containing active metal components, then drying and calcining to obtain a hydrocracking catalyst. Catalyst properties are listed in Table 1.

[0040] Step (1) The preparation steps of the modified USY molecular sieve are as follows: the silica / alumina molar ratio is 16, the specific surface area is 735m 2 / g of hydrogen-type USY molecular sieve is added to the 0.23mol / L tetrabutylammonium hydroxide solution, the mass ratio of the amount of USY molecular sieve added to the solution is 1:16, then treated at 60°C for 2.0 hours, and finally washed to If the pH value is less than 10, the modified USY molecular sieve is obtained. The modified USY molecular sieve has the following properties af...

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Abstract

The invention discloses a hydrocracking catalyst for the maximum production of low-solidifying point diesel oil and a preparation method and an application thereof. The method includes the following content: (1) alumina powder, modified Y-type molecular sieve and modified Beta zeolite powder are uniformly mixed, then added with acid solution, sufficiently ground and then shaped, drying and roasting are then carried out, and thereby a catalyst carrier is obtained; (2) impregnating solution containing an active metal component is used for impregnating the catalyst carrier obtained in step (1), drying and roasting are then carried out, and thereby the hydrocracking catalyst is obtained. Since the catalyst prepared by the method adopts the novel modified molecular sieve, the catalyst has the characteristics of high hydrocracking activity and good isomerizing property, and the solidifying point of obtained hydrocracked diesel oil product is low.

Description

technical field [0001] The invention relates to a hydrocracking catalyst for maximum production of low-condensation-point diesel oil and its preparation method and application. The catalyst prepared by the method has the characteristics of high hydrocracking activity and good isomerization performance, and the produced diesel product has a low freezing point . Background technique [0002] The hydrocracking catalyst is a dual-functional catalyst composed of hydrogenation function and cracking function, wherein the hydrogenation function is provided by the hydrogenation active metal, which improves the hydrogenation performance of the hydrocracking catalyst and is beneficial to the saturation of aromatics; the cracking function is provided by Provided by amorphous silica-alumina or molecular sieves, it can crack long-chain macromolecules and further open and transform saturated polycyclic aromatic hydrocarbons. [0003] Although straight-chain alkanes in hydrocracked diesel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80C10G47/20
CPCB01J29/166B01J29/7815B01J29/80B01J2229/18B01J2229/38C10G47/20C10G2300/70C10G2400/04
Inventor 秦波杜艳泽柳伟张晓萍王凤来
Owner CHINA PETROLEUM & CHEM CORP
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