Preparation method of catalytic cracking catalyst

A catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of increasing the production cost of oil refining enterprises, the inability to guarantee the strength of the catalyst, and the complex preparation process. The effect of improved cracking capacity and simple preparation process

Active Publication Date: 2016-07-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem existing in the preparation process of the catalyst prepared according to the existing process or the improved process is that the strength of the catalyst cannot be guaranteed when the catalyst has large pores, resulting in a large unit consumption of the catalyst, which increases the production cost of the refinery; or the preparation process is complicated, and High cost, difficult to use in industry

Method used

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  • Preparation method of catalytic cracking catalyst
  • Preparation method of catalytic cracking catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0047] a. Catalyst molding: Mix 510g pseudo-boehmite, 2213g kaolin, 278g aluminum sol, 310g USY molecular sieve, 3960g deionized and 51mL hydrochloric acid, homogenize, control the temperature of the tail gas for spray molding to 150°C, and prepare the catalyst. Roasting at 600°C for 30 minutes;

[0048] b. Acid modification: add 4659g of water to the catalyst prepared in step a; add hydrochloric acid to adjust the pH value to 4.5, and stir for 100min;

[0049] c. Modifying agent modification: add ammonium bicarbonate to the catalyst slurry modified in step b to make the pH value equal to 6, and stir for 30min;

[0050] d. Filtration and drying: filter and dry at 90°C;

[0051] e. Roasting: Roasting at 600°C for 30 minutes.

Embodiment 2

[0053] a. Catalyst molding: Mix 600g pseudo-boehmite, 1770g bentonite, 447g silica sol, 560g REY molecular sieve, 4280g deionized and 40mL hydrochloric acid, homogenize, control the temperature of the tail gas of spray molding to 150°C, and prepare the catalyst. Roasting at 450°C for 45 minutes;

[0054] b. Acid modification: add 1935g water to the catalyst prepared in step a; add hydrochloric acid to adjust the pH value to 3.6, and stir for 60min;

[0055] c. modifier modification: add ammonia water to the catalyst slurry modified in step b to make the pH value equal to 7.8, and stir for 110min;

[0056] d. Filtration and drying: filter and dry at 120°C;

[0057] e. Roasting: Roasting at 450°C for 45 minutes.

Embodiment 3

[0059] a. Catalyst molding: Mix 230g aluminum hydroxychloride, 1960g montmorillonite, 580g aluminum sol, 430g REY, 95gZSM-5 molecular sieve, 4716g deionized, homogeneous, control the temperature of the tail gas for spray molding to 150°C, and prepare the catalyst. Roast at 500°C for 35 minutes;

[0060] b. Acid modification: add 2890g water to the catalyst prepared in step a; add nitric acid to adjust the pH value to 3.0, and stir for 35min;

[0061] c. modifier modification: add ammonium carbonate to the catalyst slurry modified in step b to make the pH value equal to 6.6, and stir for 50 min;

[0062] d. Filtration and drying: filter and dry at 150°C;

[0063] e. Roasting: 350°C for 60 minutes.

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Abstract

A preparation method of a catalytic cracking catalyst includes the following steps: 1) moulding of a catalyst: mixing and pulping water, a binding agent, clay and a molecular sieve and spray-drying and roasting the mixture to mould catalyst solid granules; 2) acidic modification: adding water to the catalyst solid granules, adding an acidic substance until the pH value is 2.5-5.5, and stirring the mixture for 30-180 min; 3) modification with a modifier; adding a weak-alkaline medium modifier to the catalyst slurry to enable the pH value to be 6.0-9.0; and 4) filtering and drying the modified catalyst slurry, and roasting a product at 300-800 DEG C for 10-180 min. The catalyst has high pore volume and reaction performance, is improved in strength and is prolonged in service life.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of a catalytic cracking catalyst. Background technique [0002] Fluid Catalytic Cracking (FCC for short) process is the main process of secondary processing of crude oil, and an important means of deep processing of heavy oil at home and abroad to produce vehicle fuel. With the increasing quality and inferiority of processed raw materials, FCC catalysts are required to have gradient pore structure and acidic characteristics. The catalyst prepared by the existing technology must sacrifice the strength of the catalyst when increasing the pore volume, which cannot meet the application requirements. Therefore, it is of great significance to develop a new FCC catalyst preparation technology to improve the strength of the catalyst and prolong the service life of the catalyst under the premise of ensuring the pore volume and reaction performance of the catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08B01J29/80C10G11/05
Inventor 潘志爽李雪礼段宏昌黄校亮蔡进军袁程远高雄厚张海涛谭争国丁伟郑云锋孙书红杨一青
Owner PETROCHINA CO LTD
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