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, achieve low coke selectivity, increase the content of mesopores, and high diesel oil yield Effect

Active Publication Date: 2018-05-18
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

[0039] 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.

[0040] Specifically, the aluminum source can be various existing substances that can be converted into aluminum oxide, for example, can be selected from one or more of aluminum nitrate, aluminum sulfate and aluminum chloride.

[0041] The alkaline solution can be various existing alkaline substances, for example, 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 a conventional choice in the art, and details are not described here.

[0042] The silicon source can be various existing substances that can be converted into silicon oxide, for example, can be selected from one or more of water glass, sodium...

preparation example 1

[0070] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and the preparation method thereof.

[0071] With a concentration of 90gAl 2 O 3 / L of 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 raw material for the reaction, which is co-flowed to form a gel at 85 °C and the pH value of the gel is controlled to be 9.5. A certain amount of gel-forming slurry is collected, and the SiO 2 : Al 2 O 3 = 1:6.56, the concentration is 60gSiO 2 / L sodium water glass was heated to 70°C and aged for 2 hours to obtain a solid precipitate. with NH 4 Cl solution as solid precipitate (dry basis): NH 4 Cl:H 2 O = 1:0.8:15 weight ratio The solid precipitate was ion-exchanged 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% b...

preparation example 2

[0074] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and the preparation method thereof.

[0075] The mesoporous active silicon-phosphorus-aluminum material was prepared according to the method of Preparation Example 1, except that the amount of diammonium hydrogen phosphate was such that P 2 O 5 : solid product dry basis=0.095:1, react at 70°C for 2 hours, filter and wash, and then dry at 120°C for 10 hours to obtain mesoporous active silicon-phosphorus-aluminum material, denoted as A-2.

[0076] The mesoporous active silicon-phosphorus-aluminum material A-2 has a pseudo-boehmite structure, and its X-ray diffraction pattern is similar to the mesoporous active silicon-phosphorus-aluminum material A-1. Measured by X-ray fluorescence analysis, the chemical composition of the mesoporous active silicon-phosphorus-aluminum material A-2 in terms of the weight ratio of oxides is: 0.09Na 2 ...

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Abstract

The invention provides a catalytic cracking catalyst, and a preparation method and an application of the catalyst. Based on the total weight of the catalytic cracking catalyst, the catalytic cracking catalyst contains, by weight: 1-60% of a cracking active component, 1-50% of a mesoporous active silicon-phosphor-aluminium material, 1-70% of clay, and 1-70% of a binder. The mesoporous active silicon-phosphor-aluminium material has a pseudo-boehmite crystal structure, is represented by an anhydrous chemical formula, based on a weight ratio of oxides, of (0-0.2)Na2O.(50-86)Al2O3.(12-50)SiO2.(0.5-10)P2O5, and has the specific surface area in a range of 200-600 m2 / g, the pore volume of 0.5-1.8 cm3 / g, and the average hole diameter of 8-18 nm. Based on the total weight of cracking active component, the cracking active component contains, by weight: 30-99% of a first molecular sieve component and 1-70% of a second molecular sieve component. During a process of catalyzing and cracking heavy oil, the catalytic cracking catalyst has the relatively low coke selectivity, relatively high catalytic cracking activity, and a relatively high yield of diesel can be obtained.

Description

technical field [0001] The present invention relates to a catalytic cracking catalyst, a preparation method of the catalytic cracking catalyst and the application of the catalytic cracking catalyst in the catalytic cracking of heavy oil. Background technique [0002] Catalytic cracking (FCC) is an important secondary crude oil processing process and plays a pivotal role in the refining industry. In the catalytic cracking process, heavy distillates (such as vacuum distillate or residuum of heavier components) react in the presence of catalysts and are converted into high value-added products such as liquefied gas, gasoline, diesel, etc. Use catalytic materials with high cracking activity. Microporous zeolite catalytic materials are widely used in petroleum refining and processing industries due to their excellent shape-selective catalytic properties and high cracking activity. With the increasing depletion of oil resources and the requirements of environmental protection, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80C10G11/05
Inventor 朱玉霞陈振宇郑金玉任飞杨雪罗一斌田辉平
Owner CHINA PETROLEUM & CHEM CORP
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