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A kind of catalytic cracking catalyst and its preparation method and application

A catalytic cracking and catalyst technology, used in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as disadvantages, and achieve the effect of improving selectivity, high catalytic cracking activity, and ensuring gasoline yield

Active Publication Date: 2019-07-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this is very detrimental to improving the utilization rate and conversion rate of hydrogen energy. It is necessary to further develop a more suitable catalytic cracking catalyst to reduce the high dehydroaromatization ability of aromatic groups and improve the utilization rate and conversion rate of hydrogen energy.

Method used

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  • A kind of catalytic cracking catalyst and its preparation method and application
  • A kind of catalytic cracking catalyst and its preparation method and application
  • A kind of catalytic cracking catalyst and its preparation method and application

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preparation example Construction

[0018] According to the catalytic cracking catalyst provided by the present invention, there is no special requirement for the ultra-stable IM-5 molecular sieve, which can be prepared by referring to conventional technical methods. However, in a preferred embodiment of the present invention, the preparation method of the ultra-stable IM-5 molecular sieve comprises: exchanging the IM-5 molecular sieve with an ammonium salt solution until the Na content in the molecular sieve is lower than 0.3% by weight So far, and then calcined in a water vapor atmosphere to obtain the ultra-stable IM-5 molecular sieve.

[0019] More preferably, the preparation method of the above-mentioned super stable IM-5 molecular sieve comprises:

[0020] A1. Exchange the IM-5 molecular sieve with the ammonium salt solution until 75% to 90% by weight of Na in the molecular sieve is removed. ℃ calcination (preferably calcination 2.5-4.5h), to obtain cross-calcination IM-5 molecular sieve;

[0021] A2. Th...

Embodiment 1

[0052] This example is used to illustrate the catalytic cracking catalyst provided by the present invention and its preparation method.

[0053] (1) The preparation method of ultra-stabilized IM-5 molecular sieve comprises the following steps:

[0054] A1. Mix IM-5 molecular sieve and deionized water at a weight ratio of 1:10 to form a water slurry of IM-5 molecular sieve. The water slurry is mixed with an aqueous solution of ammonium chloride, and exchanged at a temperature of 40°C until 90% by weight of Na in the molecular sieve is removed (the exchange step can be divided into several times, and the solution is stirred for 60 minutes each time to obtain a suspension and carry out suction filtration , after the filter cake is dried, measure the Na content in the molecular sieve by X-ray fluorescence method, if the Na content does not meet the requirements, repeat the previous steps), wash with deionized water to remove residual salt, and bake at 800 ° C for 2.5 h under 100% ...

Embodiment 2

[0063] This example is used to illustrate the catalytic cracking catalyst provided by the present invention and its preparation method.

[0064] (1) The preparation method of the ultra-stabilized IM-5 molecular sieve: with reference to the step (1) of Example 1;

[0065] (2) The preparation method of the ultra-stabilized USY molecular sieve: refer to the step (2) of Example 1;

[0066] (3) The preparation method of catalytic cracking catalyst: with reference to the step (3) of embodiment 1, difference is: after obtaining fresh catalyst, do not carry out hydrothermal aging treatment, the obtained catalyst is denoted as S2.

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Abstract

The invention provides a catalytic cracking catalyst, a preparation method and application of a catalytic cracking catalyst. The catalyst contains a substrate, an ultra-stable USY molecular sieve and an ultra-stable IM-5 molecular sieve; on the basis of the weight of the catalyst, the total weight content of the ultra-stable USY molecular sieve and the ultra-stable IM-5 molecular sieve is 50wt%-90wt%; the weight ratio of the ultra-stable IM-5 molecular sieve to the ultra-stable USY molecular sieve is (0.01-0.25) to 1. According to the catalytic cracking catalyst, the gasoline yield in a heavy oil fluid catalytic cracking process can be guaranteed, n-alkanes in oil slurry can be reduced, dehydrogenation reaction can be reduced under the condition of guaranteeing higher conversion rate of catalytic cracking and low carbon olefin selectivity can be improved.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst, a preparation method of the catalytic cracking catalyst and an application of the catalytic cracking catalyst in heavy oil catalytic cracking. Background technique [0002] The catalytic cracking process is a petroleum processing process that cracks heavy raw oil into light products, and at the same time, there is a part of unconverted or less converted oil slurry in the product. In order to increase the yield of high-value light products, the catalyst particles in the oil slurry are usually separated to obtain clarified oil, and then the hard-to-crack parts such as polycyclic aromatics in the clarified oil are extracted to obtain heavy cycle oil that can continue to crack, heavy cycle oil And other raw materials re-enter the catalytic cracking unit for recycling. [0003] Catalytic cracking raw materials can be divided into alkanes, cycloalkanes and aromatics according to the composition of hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80C10G11/05
Inventor 周翔龙军田辉平代振宇赵毅
Owner CHINA PETROLEUM & CHEM CORP
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