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A preparation method of mesoporous alumina binder and its application in heavy oil catalytic cracking catalyst

A cracking catalyst, heavy oil catalysis technology, applied in the direction of catalytic cracking, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of unsatisfactory demand, low specific surface area and pore volume, etc., to achieve excellent heavy oil catalytic cracking performance, large specific gravity Effects of increased surface and pore volume, heavy oil conversion, and light oil yield

Active Publication Date: 2018-07-13
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the defects that the binder used in the preparation of catalytic cracking catalysts still has a low specific surface area and pore volume and cannot meet the demand, the present invention provides a method using a medium-porous alumina molecular sieve with a large specific surface area and pore volume as aluminum Source, a method for preparing a mesoporous alumina binder with large specific surface area and pore volume and highly ordered pore structure by acid peptization method

Method used

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  • A preparation method of mesoporous alumina binder and its application in heavy oil catalytic cracking catalyst
  • A preparation method of mesoporous alumina binder and its application in heavy oil catalytic cracking catalyst
  • A preparation method of mesoporous alumina binder and its application in heavy oil catalytic cracking catalyst

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preparation example Construction

[0030] The invention provides a method for preparing a mesoporous alumina binder, comprising:

[0031] 1). Preparation of mesoporous alumina molecular sieve:

[0032] Mix 2.0-8.0g tri-block polymer template P123 and 40-200ml ethanol, stir well at room temperature for 1-4 hours, so that P123 is fully dissolved in ethanol; add 2.8-12.8ml concentrated nitric acid and 20-80mmol isopropyl Alcohol aluminum, keep stirring for 2-5 hours; put the obtained solution in an oven at 50-80 ° C for 12-48 hours of aging treatment; after the solvent ethanol evaporates, a bright yellow solid is obtained; the obtained bright yellow solid is placed in a muffle furnace Roast at 400-900°C for 2-6 hours to remove the template agent, and finally obtain a white solid powder mesoporous alumina molecular sieve;

[0033] 2). Acid peptization of mesoporous alumina molecular sieve:

[0034] Mix the mesoporous alumina molecular sieve prepared in step 1) with water at a solid content of 5-30% for beating; s...

Embodiment 1

[0049] Example 1: Preparation of Mesoporous Alumina Binder Glue

[0050] 1). Preparation of mesoporous alumina molecular sieves (refer to the method in J.Am.Chem.Soc., 2008, 130:3465-3472.): First, dissolve 4.0g of triblock template agent P123 in 80ml of ethanol, room temperature Under continuous stirring for 2h, the P123 was fully dissolved in ethanol. Then, 11.2ml of concentrated nitric acid and 4.08g of aluminum isopropoxide (20mmol) were added, and the reaction was stirred at room temperature for 5h. Then, the obtained solution was aged in an oven at 60° C. for 48 h to obtain a bright yellow solid. The bright yellow solid was calcined in a muffle furnace at 700° C. for 4 hours to remove the template agent and obtain a white solid powder mesoporous alumina molecular sieve.

[0051] 2). Acidification and peptization of mesoporous alumina molecular sieves: Mix the ordered mesoporous alumina molecular sieves prepared in step 1) and an appropriate amount of chemical water for...

Embodiment 2

[0053] Example 2: Preparation of catalytic cracking catalyst containing mesoporous alumina binder

[0054] Fully grind and mix 120g of kaolin and 60g of USY microporous molecular sieve, so that the two are fully mixed, and then add the above mixture to the glue solution of 182g of the mesoporous alumina binder prepared in Example 1 under stirring, and stir for 1h , dried at 120°C for 12h, and the dried sample was roasted in a muffle furnace at 450°C for 1h, and the obtained solid sample was fully ground and sieved to obtain a uniform solid granular heavy oil catalytic cracking catalyst.

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Abstract

The invention relates to a preparation method of a mesoporous alumina binder and its application in heavy oil catalytic cracking catalysts. The preparation method of the invention uses the mesoporous alumina molecular sieve as the aluminum source, and adopts the method of acidification and peptization to prepare the mesoporous alumina binder glue. The mesoporous alumina binder prepared by the invention can replace traditional binders and be used in the preparation of heavy oil catalytic cracking catalysts. Moreover, compared with traditional binders, the mesoporous alumina binder prepared by the present invention has a mesoporous channel structure, large specific surface area and large pore volume. Compared with catalysts prepared with traditional binders, catalysts prepared with mesoporous alumina binders have increased conversion of heavy oil and light oil yield, decreased coke yield and heavy oil yield, and have better performance in heavy oil catalytic cracking performance.

Description

technical field [0001] The invention relates to a preparation method of a binder and its application in a catalyst, in particular to a preparation method of a mesoporous binder and its application in a heavy oil catalytic cracking catalyst. Background technique [0002] Catalytic cracking is an important process in petroleum refining. With the gradual reduction of light crude oil extraction, the proportion of heavy oil processing continues to increase, and the inferior quality of raw materials puts forward higher requirements for catalytic cracking. The poor quality of catalytic cracking raw materials makes catalyst coke the main reason for catalyst deactivation, which not only reduces the conversion rate of raw materials, but also affects product quality [0003] It is generally believed that to suppress coke formation and realize efficient cracking of heavy oil macromolecules, the catalytic cracking catalyst is required to have a large specific surface area and pore volume...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/04B01J29/08C10G11/05
Inventor 袁程远高雄厚潘志爽李雪礼黄校亮蔡进军谭争国段宏昌刘超伟张海涛
Owner PETROCHINA CO LTD
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