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Light oil type hydrocracking catalyst and preparation method thereof

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 lack of large pores in the catalyst bulk phase, affect catalyst activity, and affect product diffusion, etc., to avoid Effects of excessive cracking, strong adaptability of raw materials, and improved utilization

Active Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modified Y-type molecular sieve selected by the catalyst has a high silicon-aluminum ratio, a small number of acid centers, and a low infrared acidity (C i =0.75mmol / g), and the catalyst body lacks large pores, which is not conducive to the transmission of materials when dealing with high-dry point and poor-quality vacuum distillate oil, which affects the activity of the catalyst and also affects the diffusion of products, resulting in excessive Cracking, affecting liquid yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] The catalyst A prepared by the method of the present invention has a weight composition of: WO 3 15.0%, NiO 5.0%, ZrO 2 4.5%, amorphous silica alumina is 15.5%, and the modified Y molecular sieve content is 60.0%.

[0028] The specific preparation process is as follows:

[0029] (1) Preparation containing WO 3 Sodium tungstate solution with a concentration of 75g / L;

[0030] (2) Prepare a nickel chloride solution with a NiO concentration of 150g / L and a ZrO 2 Zirconium oxychloride solution with a concentration of 150g / L, containing Al 2 O 3 Aluminium chloride solution with a concentration of 100g / L, 3 kinds of solutions are mixed and diluted with deionization;

[0031] (3) Preparation containing SiO 2 For a water glass solution with a concentration of 75g / L, add water glass to (2) under stirring conditions;

[0032] (4) Heat (3) to 50°C, add 10wt% ammonia water dropwise under stirring to form a gel, and stop adding ammonia water when the slurry pH reaches 5.2;

[0033] (5) Add (...

example 2

[0039] The catalyst B prepared by the method of the present invention has a weight composition of: WO 3 15.5%, NiO 5.0%, ZrO 2 4.5%, 10% amorphous silicon-alumina, and 65.0% modified Y molecular sieve.

[0040] The specific preparation process is as follows:

[0041] (1) Preparation containing WO 3 Sodium tungstate solution with a concentration of 75g / L;

[0042] (2) Prepare a nickel chloride solution with a NiO concentration of 150g / L and a ZrO 2 Zirconium oxychloride solution with a concentration of 150g / L, containing Al 2 O 3 Aluminium chloride solution with a concentration of 100g / L, 3 solutions are mixed and diluted with deionized water;

[0043] (3) Preparation containing SiO 2 For a water glass solution with a concentration of 75g / L, add water glass to (2) under stirring conditions;

[0044] (4) Heat (3) to 50°C, add 10wt% ammonia water dropwise under stirring to form a gel, and stop adding ammonia water when the slurry pH reaches 5.2;

[0045] (5) Add (1) to (4) under stirring ...

example 3

[0051] The preparation method of the catalyst C prepared by the method of the present invention is the same as that of Example 1, and the hydrogenation component of the catalyst is changed from W to Mo. The specific surface area of ​​the catalyst is 407m 2 / g, pore volume 0.46ml / g, pores with a pore diameter of 10-20nm account for 10% of the total pore volume.

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Abstract

The invention discloses a light oil type hydrocracking catalyst and a preparation method thereof. The method is characterized by taking amorphous silicon aluminum and modified Y zeolite as carriers, taking group VIB and group VIII metal as hydrogenation components, and taking group IVB metal as an auxiliary agent, wherein according to the weight percentage of the catalyst, the amorphous silicon aluminum accounts for 10 to 20%, the modified Y zeolite accounts for 40 to 65%, group VIB metal oxide accounts for 10 to 20%, group VIII metal oxide accounts for 1 to 10%, and group IVB metal oxide accounts for 1 to 10%, the surface area of the catalyst BET is 350 to 650m<2> / g, the pore volume is 0.35 to 0.6ml / g, and pores with a size of 10 to 20nm account for 5% to 15% of the total pore volume. The preparation method of the catalyst adopts a mixing kneading method or sol method. The catalyst is highly adaptable to the raw materials, has relatively high cracking activity and hydrogenation activity, and is suitable for a one-stage series process for producing naphtha as a main target product.

Description

Technical field [0001] The invention relates to a light oil type hydrocracking catalyst and a preparation method thereof. The catalyst is suitable for treating low-quality heavy oil to produce high-quality naphtha. Background technique [0002] As the raw oil processed by oil refineries becomes heavier and poorer in quality, and people's awareness of environmental protection continues to increase, there is an increasing demand for oil refineries to adopt cleaner production processes to produce clean fuels. Clean production technology must be adopted to make the most effective use of petroleum resources and produce environmentally friendly petroleum products. As a clean production process for deep processing of heavy oil, hydrocracking meets the requirements of sustainable development. Therefore, the hydrocracking process will play an increasingly important role in the future oil refining industry. The hydrocracking catalyst is a dual-function catalyst that contains both acidic c...

Claims

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Application Information

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IPC IPC(8): B01J29/16C10G47/20
Inventor 阮彩安杜艳泽秦波柳伟张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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