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A kind of heavy oil cracking catalyst and preparation method thereof

A heavy oil cracking and catalyst technology is applied in the field of heavy oil cracking catalyst and its preparation to achieve the effects of high liquid yield, high gasoline yield and strong liquid yield and heavy oil conversion capability

Active Publication Date: 2018-03-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a heavy oil cracking catalyst containing titanium and / or zirconium modified Y molecular sieve and its preparation method in view of the problems existing in the cracking catalyst of Y molecular sieve modified by metal elements other than rare earth

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  • A kind of heavy oil cracking catalyst and preparation method thereof

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preparation example Construction

[0017] In the preparation method of the heavy oil cracking catalyst provided by the present invention, the compound containing titanium and / or zirconium is mixed with water as described in step (1), and the mass concentration of the resulting mixture is calculated in terms of oxides of titanium and / or zirconium (titanium is represented by TiO 2 In terms of zirconium as ZrO 2 Calculated, containing both titanium and zirconium, as TiO 2 with ZrO 2 The sum) is 0.05% to 15%, for example, 0.4 to 6%. The mass ratio of the mixture before adding the Y molecular sieve to the Y-type molecular sieve in step (1) may be 1-20:1, for example, 1.5-10:1 or 1.7-5:1.

[0018] In the preparation method of the heavy oil cracking catalyst provided by the present invention, the pH value in step (1) may be 3-10, for example, 3.5-7. The zirconium ions and / or titanium ions can form hydroxides by adding alkaline substances, such as adding alkaline solutions, to adjust the pH of the mixture to 3-10. ...

Embodiment approach

[0022] In the preparation method of the heavy oil cracking catalyst provided by the present invention, the amount of the zirconium-containing or / and titanium compound described in step (1) is such that in the obtained modified Y molecular sieve slurry, titanium and / or zirconium oxides contain titanium and / or Or the zirconium compound accounts for 1.0% to 15.0% by weight of the dry weight of the modified Y molecular sieve slurry, preferably 1.0% to 10.0% by weight. One embodiment, the weight ratio of the titanium and / or zirconium-containing compound to the Y molecular sieve (raw material) is 1-15:85-99, for example, 1-10:90-99; the formed titanium-containing And / or the solid content of the zirconium compound and molecular sieve slurry is 10-50% by weight, for example, 15-40% by weight.

[0023] In the preparation method of the heavy oil cracking catalyst provided by the present invention, the titanium and / or zirconium-containing compound described in step (1) is one or more of ...

Embodiment 1

[0040] The preparation of present embodiment catalytic cracking catalyst comprises the following steps:

[0041] (1) Modification of molecular sieve: 79.5g zirconium nitrate Zr(NO 3 ) 4 ·5H 2 O was dissolved in 807g deionized water, stirred evenly, adjusted the pH value of the mixture to 5.0 with dilute ammonia water, and then stirred at room temperature for 60min; took 380g (dry weight) of DASY (0.0) molecular sieves and added them to the above slurry, and continued at room temperature Fully stirred for 60 minutes to obtain a modified Y molecular sieve slurry with a solid content of 30% by weight;

[0042] (2) Modification of clay: 385g kaolin, 26.8g zirconium nitrate and 1000g deionized water are mixed and beaten, and the pH value of the mixed slurry is adjusted to 3.0 with dilute ammonia water, and then continue stirring for 2 hours at room temperature to obtain a solid content of 20%. Modified clay slurry;

[0043] (3) Preparation of the catalyst: the modified Y molecu...

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Abstract

A heavy oil cracking catalyst and a preparation method thereof, the catalyst contains 10% to 60% by weight of modified Y molecular sieve, 10% to 60% by weight of modified clay and 5% to 50% by weight of binder, and the modified Y The molecular sieve contains 1% to 15% by weight of titanium and / or zirconium metal oxide, and the modified clay contains 1.0% to 20.0% by weight of zirconium metal oxide. The preparation method comprises the steps of modifying the molecular sieve, modifying the clay, beating the modified molecular sieve and the clay, and spray drying. The catalyst has strong heavy oil conversion ability, high gasoline yield, strong metal pollution resistance, and is suitable for the conversion of hydrocarbon oil with high metal content.

Description

technical field [0001] The invention relates to a heavy oil cracking catalyst and a preparation method thereof, more specifically, to a heavy oil catalytic cracking catalyst containing zirconium and / or titanium and a preparation method thereof. Background technique [0002] With the increasing weight of catalytic cracking raw oil, it is required to improve the cracking catalyst's ability to crack heavy oil and resist heavy metal pollution. Therefore, not only the Y molecular sieve, the main active component of the cracking catalyst, is required to have high thermal and hydrothermal stability and maintain a suitable distribution of acidic active centers, but also the matrix component of the catalyst is required to have a strong ability to capture heavy metal components and Strong ability to crack heavy oil macromolecules. [0003] In terms of Y molecular sieve modification, commonly used methods include ion exchange, ultra-stabilization treatment, and metal modification. Amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08C10G11/05
Inventor 于善青田辉平王振波许明德
Owner CHINA PETROLEUM & CHEM CORP
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