A method for clean preparation of hydrocracking catalyst without NOx emission

A hydrocracking and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of poor dispersion of active metals and low hydrogenation performance, and achieve improved dispersion, easy operation, The effect of simple preparation method

Active Publication Date: 2017-08-22
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the problems that the hydrocracking catalyst prepared by the kneading method has poor dispersion of active metals and low hydrogenation performance, and the preparation of the hydrocracking catalyst by the impregnation method requires a high solubility of the metal salt solution, the present invention provides a method that can prepare a high metal A hydrocracking catalyst preparation method combining dispersive kneading and impregnation, and the preparation process is clean and NO NO x emission

Method used

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  • A method for clean preparation of hydrocracking catalyst without NOx emission
  • A method for clean preparation of hydrocracking catalyst without NOx emission
  • A method for clean preparation of hydrocracking catalyst without NOx emission

Examples

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Comparison scheme
Effect test

Embodiment 1

[0039] Based on the weight of the final hydrocracking catalyst, it contains 15% of Y molecular sieve, 35% of amorphous silica-alumina, 5.0% of nickel oxide, 22.0% of tungsten oxide, and the balance is alumina. , 3824 aluminum hydroxide dry rubber powder and 3903 amorphous silica aluminum dry rubber powder.

[0040] The catalyst preparation process is as follows: fully mix nickel acetate, modified Y molecular sieve, aluminum hydroxide dry rubber powder, amorphous silica-alumina dry rubber powder, and squash powder in a kneader, and add a concentration of 13.2g acetic acid / 100mL and 8.0g β-carboxyethyl acrylate / 100mL mixed acid solution for peptization, extruded into a cylindrical shape with a diameter of 1.5mm. Then steam treatment at 500° C. for 3 hours with a pressure of 0.1 MPa to prepare a molded nickel-containing catalyst, and measure its dry basis. Ammonium metatungstate solution is prepared with distilled water, and the molded nickel-containing catalyst is impregnated f...

Embodiment 2

[0042] The kneaded catalyst in Example 1 was hydrothermally treated with steam at 450° C. for 2 hours and the pressure was 0.05 MPa. The other preparation methods were the same as in Example 1, and the catalyst number was FC-2.

Embodiment 3

[0044] According to the weight of the final hydrocracking catalyst, it contains 55% of Y molecular sieve, 5.0% of nickel oxide, 22.0% of tungsten oxide, and the balance is alumina. Select the aforementioned catalyst for preparation of raw materials: modified Y molecular sieve 1, 3824 aluminum hydroxide dry rubber powder .

[0045] The preparation method is the same as in Example 1, and the obtained catalyst number is FC-3.

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Abstract

The invention discloses a preparation process of a hydrocracking catalyst, which includes the following contents: (1) preparing a hydrocracking catalyst containing VIII organic acid salts by kneading method, and performing steam treatment on the wet material after forming; (2) preparing VIB-containing (3) The catalyst containing metal VIII that has been treated with water vapor in step (1) is added to the metal solution prepared in step (2) for impregnation, filtered, dried, and roasted Finally, the finished hydrocracking catalyst is prepared. The method can prepare a hydrocracking catalyst with high metal dispersion, and the preparation process is clean and NO x emission.

Description

technical field [0001] The invention relates to a method for preparing a hydrocracking catalyst, in particular to a method for preparing a hydrocracking catalyst without NOx emission during the preparation process. [0002] technical background [0003] Distillate oil hydrocracking is a high-temperature and high-pressure hydrogen fixed-bed catalytic conversion process, and it is one of the most important heavy oil deep processing processes in the modern oil refining industry. The process has the characteristics of mature and reliable technology, flexible production plan, strong adaptability of raw materials, high selectivity of target products, good product quality, and environmentally friendly production process, and has been widely used in industry. my country is one of the first countries in the world to master the technology of hydrocracking of distillate oil. As early as the 1950s, it started to develop the technology of hydrocracking of distillate oil. The first distill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16
Inventor 杜艳泽关明华王凤来
Owner CHINA PETROLEUM & CHEM CORP
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