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A special-shaped hydrocracking catalyst and its preparation method and application

A hydrocracking and catalyst technology, which is used in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as lack of consideration, uneven distribution of impregnated metals, influence of catalyst application performance, etc., to reduce coking, Solve the problem that the material distribution is not easy to be uniform, and eliminate the effects of channeling and local overheating

Active Publication Date: 2016-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the drying process after impregnation, the uneven dispersion caused by capillary phenomenon on the retransfer of active components is not considered, especially for special-shaped particle catalysts, the effect of capillary phenomenon on the transfer of active components is more obvious
[0009] For the existing catalyst preparation method, for special-shaped supports, especially toothed spherical supports, due to the change of the shape of the support itself, uneven distribution of impregnated metals occurs in the drying and roasting steps, which has a significant impact on the application performance of the catalyst.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The raw material is the same as that of Comparative Example 1, and after the step of impregnating the carrier with the solution, the following steps are added: ①first air-dry; ②impregnate with 1mol / L urea solution in equal amount for 2 hours. All the other steps and methods are the same as Comparative Example 1. Catalyst SA is obtained. The final composition of the catalyst is the same as that of the comparative example.

Embodiment 2

[0042] The raw materials are the same as those in Comparative Example 2. After the carrier is impregnated with the metal solution, the addition steps are: ① dry it naturally; ② impregnate it with 10mol / L ammonia solution for 3 hours. All the other steps and methods are the same as Comparative Example 2. Catalyst SB is obtained. The final composition of the catalyst is the same as that of Comparative Example 2.

Embodiment 3

[0046] The raw materials are the same as in Comparative Example 3. After the carrier is impregnated with the metal solution, the steps of adding: ① Drain until there is no clear water on the surface of the particles; ② Spray immerse with 2mol / L diethanolamine solution for 2 hours. All the other steps and methods are the same as Comparative Example 3. Catalyst SC is obtained. The final set of catalysts was the same as in Comparative Example 3.

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Abstract

The invention relates to a special hydrocracking catalyst, and a preparation method and application thereof. According to the preparation method for the catalyst, a solution after-treatment method is adopted to ensure that metal is uniformly deposited on a carrier and does not migrate in the subsequent drying process, so that uniform dispersion of the metal is realized; and by the preparation method for the catalyst, the metal is uniformly dispersed, the carrier and the metal are well matched, and the catalytic performance is greatly improved. The hydrocracking catalyst is most suitable for the middle distillate type hydrocracking process.

Description

technical field [0001] The invention relates to a special-shaped particle catalyst and its preparation method and application, especially the preparation method of the special-shaped particle catalyst whose active components are evenly distributed on the carrier. The catalyst can be applied in catalytic or non-catalytic fields. Background technique [0002] With the integration of the domestic market and the international market, and the improvement of public awareness of environmental protection, the oil refining industry is facing greater pressure to upgrade product quality. Hydrofining and hydrocracking are an important process in petroleum processing, the purpose of which is to remove sulfur, nitrogen, oxygen and other heteroatoms and metal impurities in oil to improve product quality. Catalysts are the key to progress in hydrofining and hydrocracking technologies, and improving catalyst performance is the main means to fully tap the potential of existing refinery units ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/02B01J35/10B01J37/02B01J29/78C10G47/20
Inventor 谷明镝黄薇
Owner CHINA PETROLEUM & CHEM CORP
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