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Preparation method of high-solid-content catalyst

A high solid content, catalyst technology, applied in catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem that the relative content of pseudo-boehmite is difficult to increase, and achieve the effect of improving production efficiency and low investment

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires hydrogen ions in the aluminum binder to soften the surface of pseudo-boehmite, and the relative content of pseudo-boehmite is difficult to increase

Method used

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  • Preparation method of high-solid-content catalyst
  • Preparation method of high-solid-content catalyst
  • Preparation method of high-solid-content catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 25kg water in the gelling kettle, then add the ReY molecular sieve (the product that Sinopec Catalyst Qilu branch company produces, be the Y type molecular sieve that contains rare earth, the ReY molecular sieve (the product that the Sinopec Catalyst Qilu branch company produces of 40% by weight) of concentration, RE 2 o 3 content is 17.0% by weight, the same below) slurry 87.5Kg, then add aluminum sol (the product produced by Sinopec Catalyst Qilu Branch, alumina content 21.5% by weight, the same below) 23.3Kg and stir for 10 minutes, then add kaolin 45.5Kg (Suzhou Kaolin company product, burning 23% by weight, the same below), beating for 90 minutes, adding pseudo-boehmite 41Kg (product of Shanxi Branch of Aluminum Corporation of China, burning 39% by weight, same below), stirring for 30 minutes , add concentration 36% by weight industrial hydrochloric acid 1Kg, stir 90 minutes, form catalyst slurry, analysis slurry viscosity is 75000 centipoises, then use pressur...

Embodiment 2

[0054] The catalyst is prepared with reference to Example 1, the difference is that the catalyst formula of Example 2 is as shown in Table 1, the concentration of HCl in the dry gas, the inlet temperature and outlet temperature of the spray drying are as shown in Table 2, and the rest of the preparation conditions are the same as those in Example 1.

Embodiment 3

[0056] The catalyst is prepared with reference to Example 1, the difference is that the catalyst formula of Example 3 is as shown in Table 1, the ratio of HCl and drying gas, the inlet temperature and outlet temperature of spray drying are as shown in Table 2, and the rest of the preparation conditions are the same as the implementation example 1.

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Abstract

The invention relates to a high solid content catalyst preparation method, which comprises: mixing a catalyst preparation raw material comprising kaolin, a molecular sieve, hydrated alumina and an optional alumina sol, an inorganic acid and water to form a catalyst slurry with a solid content of 35-50 wt%, atomizing the catalyst slurry, and carrying out spray drying in a spray drying tower, inorganic acid is introduced into the spray drying tower to be in contact with the atomized catalyst slurry, and the ratio of the introduced acidic material to the dry gas entering the spray drying tower is 4-10 g / m < 3 >. According to the catalyst preparation method provided by the invention, high-solid-content catalyst slurry can be prepared, the grinding performance of the catalyst is improved, and the sphericity of the catalyst is improved.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation and relates to a catalyst preparation method for increasing the solid content of slurry in the catalyst preparation process. Background technique [0002] Fluid catalytic cracking (FCC) is an important crude oil secondary processing technology, and catalytic cracking is an important device for deep processing of heavy oil into vehicle fuel. With the increasing of heavy and inferior raw material oil, the demand for catalytic cracking catalysts is increasing, and the global demand currently exceeds 1 million tons per year. Catalytic cracking catalysts are mainly semi-synthetic catalysts. The preparation process usually includes mixing clay, binder and molecular sieve in a certain proportion to form a slurry with a solid content of about 20-40% (this process is usually called gelling) and spray drying. Steps, the microspheres obtained by spray drying may also include steps such as roast...

Claims

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Application Information

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IPC IPC(8): B01J29/08B01J35/08B01J37/00C10G11/05C10G11/18
CPCB01J29/088B01J37/0045C10G11/05C10G11/18B01J2229/18B01J35/51Y02P20/52
Inventor 凤孟龙宋海涛李家兴王振波
Owner CHINA PETROLEUM & CHEM CORP