Hydrocracking catalyst containing Ti-P-Beta molecular sieve and preparation method of hydrocracking catalyst

A ti-p-beta and hydrocracking technology, which is applied in the field of hydrocracking catalyst and its preparation, can solve the problems of low naphtha yield, poor performance of zeolite properties, and low selectivity of heavy naphtha , to achieve the effects of reducing coke deposition, promoting overall reaction performance, and improving aromatization and isomerization performance

Active Publication Date: 2014-01-22
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the catalyst is used in hydrocarbon hydrocracking reactions, it has high selectivity for middle distillate oil, but relatively low selectivity for heavy naphtha
[0009] The titanium in the existing titanium-containing hydrocracking catalysts disclosed in CN102909048A, CN102451744A, CN103028448A, etc. is usually loaded onto the carrier simultaneously with the active hydrogenation metal by impregnation, or mixed with the matrix first, and then mixed with the zeolite Introduced in the form of molding, so it cannot exert a good influence on the properties of zeolite
Correspondingly, this type of hydrocracking catalyst usually has high hydrocracking activity and middle distillate selectivity, but low naphtha yield

Method used

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  • Hydrocracking catalyst containing Ti-P-Beta molecular sieve and preparation method of hydrocracking catalyst
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Embodiment 1

[0038] The present embodiment provides a kind of hydrocracking catalyst containing Ti-P-Beta molecular sieve, and its preparation method comprises the following steps:

[0039] (1) Preparation of Ti-P-Beta molecular sieve:

[0040] (1a), with NaBeta molecular sieve: water: NH 4 Cl=1:10:0.9 mass ratio, NaBeta molecular sieve, water and NH 4 Cl is made into an ion exchange liquid, and the pH value of the ion exchange liquid is adjusted to about 3 with 0.5mol / L HCl solution, and then the ion exchange is carried out at 80°C for 3 hours, followed by suction filtration and washing to neutrality, and at 95°C After drying at 550°C for 10 hours, then roasting at 550°C for 2 hours to obtain a deaminated molecular sieve, which is denoted as Beta(1) molecular sieve;

[0041] (1b), 2.41g Ti(SO4) 2 Dissolve in an appropriate amount of distilled water to make an impregnating solution, slowly pour the impregnating solution into 60g Beta(1) molecular sieve, stir continuously to achieve equa...

Embodiment 2

[0048] The present embodiment provides a kind of hydrocracking catalyst containing Ti-P-Beta molecular sieve, and its preparation method comprises the following steps:

[0049] (1) Preparation of Ti-P-Beta molecular sieve:

[0050](1a), with NaBeta molecular sieve: water: NH 4 Cl=1:10:0.8 mass ratio, NaBeta molecular sieve, water and NH 4 Cl is made into an ion exchange liquid, and the pH value of the ion exchange liquid is adjusted to about 3 with 0.5mol / L HCl solution, and then the ion exchange is carried out at 90°C for 3 hours, followed by suction filtration and washing to neutrality, and at 95°C After drying at 550°C for 10 hours, and then roasting at 550°C for 4 hours, deaminated molecular sieves were obtained, which were denoted as Beta(2) molecular sieves;

[0051] (1b), 3.01g Ti(SO4) 2 Dissolve in an appropriate amount of distilled water to make an impregnating solution, slowly pour the impregnating solution into 60g of Beta(2) molecular sieves, stir constantly to ...

Embodiment 3

[0057] The present embodiment provides a kind of hydrocracking catalyst containing Ti-P-Beta molecular sieve, and its preparation method comprises the following steps:

[0058] (1) Preparation of Ti-P-Beta molecular sieve:

[0059] (1a), with NaBeta molecular sieve: water: NH 4 Cl=1:10:1 mass ratio, NaBeta molecular sieve, water and NH 4 Cl is made into an ion exchange liquid, and the pH value of the ion exchange liquid is adjusted to about 3 with 0.5mol / L HCl solution, and then the ion exchange is carried out at 85°C for 3 hours, followed by suction filtration and washing to neutrality, and at 95°C After drying at 550°C for 10 hours, it was then calcined for 4 hours to obtain a molecular sieve after deammonization, which was denoted as Beta(3) molecular sieve;

[0060] (1b), 9.04g Ti(SO4) 2 Dissolve in an appropriate amount of distilled water to make an impregnating solution, slowly pour the impregnating solution into 60g Beta(3) molecular sieves, stir continuously to achi...

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Abstract

The invention provides a hydrocracking catalyst containing a Ti-P-Beta molecular sieve and a preparation method of the hydrocracking catalyst. The preparation method comprises the following steps: mixing and forming amorphous silica and alumina, a modified Y type molecular sieve prepared by the method and a tungsten-loaded Ti-P-Beta molecular sieve prepared by the method, thus obtaining a catalyst carrier, wherein the weight percents of the amorphous silica and alumina, the modified Y type molecular sieve and the tungsten-loaded Ti-P-Beta molecular sieve are respectively 30-70%, 10-30% and 5-15%; loading tungsten and nickel on the catalyst carrier, thus obtaining the hydrocracking catalyst, wherein the weight percents of NiO and WO3 are respectively 1-10% and 10-29%. The hydrocracking catalyst is prepared by the preparation method provided by the invention. The catalyst has relatively high hydrocracking activity and stability, can be used for preparing heavy naphtha with high potential aromatic content and tail oil with low BMCI (Bureau of Mines Correlation Index) and has relatively high chemical material total recovery.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst containing Ti-P-Beta molecular sieve and a preparation method thereof, belonging to the technical field of hydrocracking catalysts. Background technique [0002] The rapid development of the national economy has promoted the demand for chemical raw materials such as ethylene and aromatics in my country. Therefore, it is of great significance to design and develop chemical raw material-type hydrocracking catalysts aimed at producing high-quality heavy naphtha catalytic reforming raw materials, high-quality light naphtha and tail oil steam cracking raw materials for ethylene production. [0003] The hydrocracking catalyst is composed of an acidic component and a hydrogenation active component. The hydrogenation active center is metal Ni(Co)W(Mo), and the cracking active center is mainly modified Y-type molecular sieve. In order t...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/20
Inventor 申宝剑王艳丹任申勇郭巧霞王闻年李江成孙发民李海岩张志华
Owner BC P INC CHINA NAT PETROLEUM CORP
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