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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 problems such as poor coke selectivity, and achieve high gasoline yield, high catalytic cracking activity, and low coke selectivity.

Active Publication Date: 2017-12-22
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

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preparation example Construction

[0023] Wherein, the preparation method of the first rare-earth-containing Y-type molecular sieve comprises: contacting the rare-earth-containing Y-type molecular sieve with silicon tetrachloride under stirring, the contact temperature is 100-500° C., and the stirring time is 1-500° C. After 10 hours, the weight ratio of the rare earth-containing Y-type molecular sieve to silicon tetrachloride is 1:0.05-0.5;

[0024]The silicon-aluminum ratio of the second rare earth-containing Y-type molecular sieve is 5-30:1, and the initial unit cell constant is 2.430-2.460nm, based on the total weight of the second rare-earth-containing Y-type molecular sieve and by oxidation The rare earth content of the material is 10-20% by weight, and the ratio of the equilibrium unit cell constant to the initial unit cell constant is at least 0.985, wherein, according to X-ray diffraction analysis, the molecular sieve has two molecular sieves with 2θ of 12.43±0.06° and 11.87±0.06°. Diffraction peak int...

preparation example 1

[0067] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and its preparation method.

[0068] 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

[0071] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and its preparation method.

[0072] 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.

[0073] 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; the cracking active component Containing rare earth-containing Y-type molecular sieves, the rare-earth-containing Y-type molecular sieves are selected from one or more of the first rare-earth-containing Y-type molecular sieves, the second rare-earth-containing Y-type molecular sieves, and the third rare-earth-containing Y-type molecular sieves kind. The catalytic cracking catalyst not only has lower coke selectivity and higher catalytic cracking activity in the heavy oil catalytic cracking process, but also can obtain higher gasoline yield.

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 陈振宇郑金玉朱玉霞罗一斌田辉平杨雪任飞
Owner CHINA PETROLEUM & CHEM CORP
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