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

A catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problem of poor coke selectivity, achieve low coke selectivity, high liquefied gas yield, and increase the content of mesopores Effect

Active Publication Date: 2018-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cracking catalyst has the advantages of low production cost and better crude oil conversion ability compared with the conventional catalyst using pseudo-boehmite, its coke selectivity is poor

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

Examples

Experimental program
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preparation example Construction

[0048]In the preparation method of the above-mentioned mesoporous active silicon-phosphorus-aluminum material, the steps before obtaining the solid product can be carried out with reference to the method disclosed in CN1565733A.

[0049] Specifically, the aluminum source may be various existing substances that can be converted into alumina, for example, may be selected from one or more of aluminum nitrate, aluminum sulfate and aluminum chloride.

[0050] The alkaline solution can be various existing alkaline substances, for example, it can be selected from one or more of ammonia water, sodium hydroxide solution, potassium hydroxide solution and sodium metaaluminate solution. Wherein, the concentration of the alkaline solution can be conventionally selected in the art, and will not be repeated here.

[0051] The silicon source can be various existing substances that can be converted into silicon oxide, for example, it can be selected from one or more of water glass, sodium sili...

preparation example 1

[0078] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and its preparation method.

[0079] With a concentration of 90gAl 2 o 3 / L Al 2 (SO 4 ) 3 solution and concentration of 102gAl 2 o 3 / L, NaAlO with a caustic ratio of 2.5 2 The solution is the reaction raw material, co-flow at 85°C to form a gel and control the pH value of the gel to be 9.5, collect a certain amount of gel solution, and press SiO under stirring 2 :Al 2 o 3 =1:6.56 The ratio of adding concentration is 60gSiO 2 / L of sodium water glass, heated to 70 ° C for 2 hours to obtain a solid precipitate. use NH 4 Cl solution by solid precipitate (dry basis): NH 4 Cl:H 2 The weight ratio of O=1:0.8:15 was used to ion-exchange the solid precipitate at 60°C to remove sodium ions. The ion exchange was repeated twice for 0.5 hours each time. After filtration, the sodium oxide content was less than 0.3% by weight. The...

preparation example 2

[0082] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and its preparation method.

[0083] Prepare mesoporous active silicon-phosphorus-aluminum material according to the method of Preparation Example 1, the difference is that the amount of diammonium hydrogen phosphate makes P 2 o 5 : dry basis of solid product=0.095:1, then reacted at 70°C for 2 hours, filtered and washed with water, and dried at 120°C for 10 hours to obtain a mesoporous active silicon-phosphor-aluminum material, denoted as A-2.

[0084] The mesoporous active silicon phosphorus aluminum material A-2 has a pseudoboehmite structure, and its X-ray diffraction spectrum is similar to that of the mesoporous active silicon phosphorus aluminum material A-1. Measured by X-ray fluorescence analysis, the chemical composition of the mesoporous active silicon-phosphor-aluminum material A-2 in terms of weight ratio of oxide is: 0...

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Abstract

The invention provides a catalytic cracking catalyst, its preparation method and application. Based on the total weight of the catalytic cracking catalyst, the catalytic cracking catalyst contains 1-60% by weight of cracking active components, 1-50% by weight of mesoporous active silicon phosphorus aluminum material, 1-70% by weight of clay and 1-70% by weight % by weight binder; the mesoporous active silicon-phosphorus-aluminum material has a pseudo-boehmite crystal phase structure, and the anhydrous chemical expression in terms of weight ratio of oxide is: (0‑0.2)Na2O (50‑ 86) Al2O3 (12-50) SiO2 (0.5-10) P2O5, the specific surface area is 200-600m2 / g, the pore volume is 0.5-1.8cm3 / g, and the average pore diameter is 8-18nm; Based on the total weight, the cracking active component contains 50-95% by weight of the first molecular sieve component and 5-50% by weight of the second molecular sieve component. The catalytic cracking catalyst not only has lower coke selectivity and higher catalytic cracking activity in the process of catalytic cracking of heavy oil, but also can obtain higher yield of liquefied gas.

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] Catalytic cracking (FCC) is an important secondary processing process of crude oil and occupies a pivotal position in the oil refining industry. In the catalytic cracking process, heavy fractions (such as vacuum distillate oil or residues of heavier components) react in the presence of catalysts and are converted into high value-added products such as liquefied gas, gasoline, and diesel oil. In this process, it usually requires Catalytic materials with high cracking activity are used. Microporous zeolite catalytic materials are widely used in petroleum refining and processing industries due to their excellent shape-selective catalytic performance and high cracking reactivity. With the depletion of petroleum resources and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08C10G11/05
Inventor 任飞朱玉霞罗一斌郑金玉田辉平陈振宇杨雪
Owner CHINA PETROLEUM & CHEM CORP
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