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Catalytic cracking catalyst and preparation method and application thereof

A catalytic cracking and catalyst technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problems of low yield of light fractions and achieve long-term suppression of agglomeration Great effect of improving cracking efficiency

Active Publication Date: 2020-07-31
FUZHOU UNIV ASSET MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem of low yield of light fractions in the existing low-quality oil suspension bed hydrogenation process only relying on high-temperature thermal cracking and high-pressure hydrogen working conditions , thereby providing a catalytic cracking catalyst suitable for low-quality oil suspension bed and its preparation method and application, introducing catalytic cracking catalyst in the low-quality oil suspension bed reaction system can not only improve the yield of light oil, but also reduce the reaction temperature and Reaction pressure, while saving energy and reducing consumption, can improve the intrinsic safety of the system

Method used

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  • Catalytic cracking catalyst and preparation method and application thereof
  • Catalytic cracking catalyst and preparation method and application thereof
  • Catalytic cracking catalyst and preparation method and application thereof

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preparation example Construction

[0037] The present invention also provides a kind of preparation method of catalytic cracking catalyst, it is characterized in that, comprises the steps:

[0038] S1. Prepared by mixing alcohols and water at a volume ratio of 1:(0.2-1), and then adding a silicon-based precursor to the mixed solution, wherein the volume ratio of the silicon-based precursor to the mixed solution is 1:5-50, Stir at room temperature to hydrolyze the silicon-based precursor to prepare silica sol. The alcohol is one of methanol, ethanol, ethylene glycol, and isopropanol, and the silicon-based precursor is tetrabutyl orthosilicate, ethyl orthosilicate, methyl orthosilicate, and water glass. A sort of.

[0039] S2. Add the modifier precursor to the silica sol prepared in step S1 in a specific proportion, and then add alkaline substances dropwise to make the pH value in the sol be between 2 and 10, and then move the sol into a hydrothermal kettle to adjust the temperature at 60 to 200 Under the tempe...

Embodiment 1

[0047] This embodiment is used to illustrate the catalytic cracking catalyst preparation method and catalytic cracking catalyst provided by the present invention, specifically as follows:

[0048] S1. Mix isopropanol and water at a volume ratio of 1:1 to prepare a mixed solution, and then add tetraethyl orthosilicate to the mixed solution, wherein the volume ratio of tetraethyl orthosilicate to the mixed solution is 1:5. Stir at room temperature for 2 hours to hydrolyze the silicon-based precursor ethyl orthosilicate to prepare silica sol.

[0049] S2. Add titanium isopropoxide to the above-mentioned silica sol according to the molar ratio of Ti:Si 1:50, add ammonia water dropwise after stirring at room temperature for 0.5 hours, adjust the pH to 7.0, then move the sol into a hydrothermal kettle, The hydrothermal reaction was carried out at ℃ for 20 hours to obtain the intermediate.

[0050] S3. After the temperature of the above-prepared intermediate was lowered to normal te...

Embodiment 2

[0052] This embodiment is used to illustrate the catalytic cracking catalyst preparation method and catalytic cracking catalyst provided by the present invention, specifically as follows:

[0053] S1. Mix ethanol and water at a volume ratio of 1:1 to prepare a mixed solution, and then add orthobutyl silicate to the mixed solution, wherein the volume ratio of orthobutyl silicate to the mixed solution is 1:50. Stir for 2 hours to hydrolyze the silicon-based precursor butyl orthosilicate to prepare silica sol.

[0054] S2. According to the Zr:Si molar ratio of 1:20, take zirconium oxynitrate and add it to the above-mentioned silica sol, stir at room temperature for 0.5 hours, add ammonia water dropwise, adjust the pH to 2.0, then move the sol into a hydrothermal kettle, and heat it at 80°C The hydrothermal reaction was carried out for 24 hours to obtain the intermediate.

[0055] S3. After the temperature of the above-prepared intermediate was lowered to normal temperature, it w...

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Abstract

The invention discloses a catalytic cracking catalyst as well as a preparation method and application thereof. The catalytic cracking catalyst is an amorphous composite oxide prepared by taking silicon dioxide as a matrix and doping a modifier. The catalytic cracking catalyst is suitable for a suspended bed hydrocracking process, and the modifier is an oxide of IIIB metals or IVB metals in the periodic table of elements. Silica sol is prepared at first; then the modifier is deposited on the surface of the silica sol; crystallization is carried out at a proper temperature by using a hydrothermal method; the crystals are roasted under a set condition to obtain an amorphous composite oxide; the modifier oxide can be anchored on the silicon dioxide substrate; by means of firm combination of M-O-Si bonds, agglomeration and growth of a silicon oxide matrix in the crystallization or roasting process can be inhibited, the composite oxide material maintains nano-particles and a high specific surface area, high dispersion of the catalytic material in a suspended bed is facilitated, and a reaction place is provided for organic macromolecules.

Description

technical field [0001] The invention relates to the technical field of petroleum catalytic cracking, in particular to a catalytic cracking catalyst and its preparation method and application. Background technique [0002] In recent years, as the world's crude oil resources have become increasingly heavy and inferior, the demand for light oil products has increased, and the demand for heavy fuel oil has decreased, the deep processing technology of heavy and inferior oil has become a key and difficult issue that needs to be studied and solved urgently in the refining industry. Efficient utilization of heavy and low-quality oil has become an important direction of the national petroleum resource development strategy. Suspension bed hydrogenation process is a heavy oil hydrogenation process that uses low-quality heavy oil as raw material for the purpose of producing light fuel oil. It is one of the ideal methods to realize the lightening of low-quality heavy oil. This process i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J21/06B01J21/08B01J35/10B01J23/28B01J23/30B01J23/745B01J23/75B01J23/755B01J23/83B82Y30/00B82Y40/00C10G47/12
CPCB01J23/10B01J21/063B01J21/066B01J21/08B01J23/002B01J23/28B01J23/30B01J23/745B01J23/75B01J23/755B01J23/83B82Y30/00B82Y40/00C10G47/12C10G2300/1037B01J35/23B01J35/617B01J35/615Y02P20/52
Inventor 江莉龙马永德曹彦宁
Owner FUZHOU UNIV ASSET MANAGEMENT CO LTD
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