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Hydrocracking catalyst carrier and preparation method thereof

A catalyst carrier and hydrocracking technology, which is applied in the direction of catalyst carrier, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of reducing catalyst selectivity, affecting the diffusion of reactants, etc., and achieve good hydrothermal stability and process flow Simple, effective use

Active Publication Date: 2018-02-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for large-grained molecular sieves, the larger the particle size, the longer the pores, which not only affects the diffusion of reactants, but also the reactants are prone to multiple cracking reactions in the pores of molecular sieves, reducing the selectivity of the catalyst.

Method used

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  • Hydrocracking catalyst carrier and preparation method thereof
  • Hydrocracking catalyst carrier and preparation method thereof
  • Hydrocracking catalyst carrier and preparation method thereof

Examples

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preparation example Construction

[0040] In the preparation process of the modified Y-type molecular sieve used in the present invention, in the preparation method of the large-grain NaY-type molecular sieve in step (1), Na in the high-alkali sodium metaaluminate solution 2 O content is 260~320g / L, Al 2 o 3 The content is 30~50g / L, and it can be prepared by conventional methods. Na in low alkali sodium metaaluminate solution 2 O content is 100~130g / L, Al 2 o 3 The content is 60~90g / L, and it can be prepared by conventional methods. Al in aluminum sulfate solution 2 o 3 The content is 80~100g / L. SiO in water glass 2 The content is 200~300g / L, and the modulus is 2.8~3.5.

[0041] In the preparation process of the modified Y-type molecular sieve used in the present invention, the preparation method of the large-grain NaY-type molecular sieve in step (1) specifically includes the following steps:

[0042] I. According to Na 2 O: Al 2 o 3 : SiO 2 :H 2 O=10~15:1:10~20:500~600 molar ratio, at 20°C~40°C...

Embodiment 1

[0057] In this example, large-grain NaY molecular sieves were prepared by the method of the present invention.

[0058] Preparation of LY-1

[0059] (1) Preparation of gel: Slowly add 165mL of water glass to 63mL of high alkali sodium metaaluminate solution under stirring condition at a temperature of 25°C. After mixing evenly, add 42.5mL of aluminum sulfate solution and 35.6mL of low Alkaline sodium metaaluminate solution, stirred at constant temperature for 0.5 hours, and then aging the obtained synthetic solution at the above temperature for 1 hour to obtain a gel;

[0060] (2) Crystallization: Under stirring conditions, raise the gel in the synthesis kettle to 100°C at a heating rate of 2.5°C / min, stir and crystallize at a constant temperature for 16 hours, after the crystallization is completed, quickly cool down with cold water, and open the The synthesized molecular sieve was taken out from the synthesis kettle, and the product LY-1 was obtained after filtering, washin...

Embodiment 2

[0075] Firstly, ammonium exchange is carried out on the raw material large-grain NaY molecular sieve LY-1. Prepare 10 liters of 0.5 mol / L ammonium nitrate aqueous solution. Weigh 2,000 grams of small-grain NaY molecular sieves, dissolve them in 10 liters of prepared ammonium nitrate aqueous solution, stir at 90°C for 1 hour at a constant temperature of 300 rpm, then filter the molecular sieves, and leave a small sample to analyze Na 2 O content; repeat the above operation until Na in the molecular sieve 2 The O content reaches 2.5-5.0wt%, and the sample number obtained after drying is LYN-1.

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Abstract

The invention discloses a hydrocracking catalyst carrier and a preparation method thereof. The catalyst carrier adopts a large-grained and high-silicon modified Y type molecular sieve with centralized effective aperture distribution as the main cracking component, and takes amorphous silica-alumina as a second cracking component. The prepared hydrocracking catalyst has high activity and medium oil selectivity, and the produced middle distillate oil has good quality.

Description

technical field [0001] The invention relates to a hydrocracking catalyst carrier and a preparation method thereof, in particular to a hydrocracking catalyst carrier for producing high-quality middle distillate oil in a hydrocracking process and a preparation method thereof. Background technique [0002] With the recovery and development of the world economy, the demand for high-quality middle distillate oil products (that is, the power fuel of the aviation industry: jet fuel, and the main power fuel of the sea and land transportation industry: diesel oil) in the world's oil market has been increasing. At the same time, the reserves of oil and gas resources in the world are decreasing year by year, and the quality is deteriorating year by year, and the requirements for the quality of refined oil are getting higher and higher. Therefore, hydrocracking technology has become the best refining technology to produce high-quality middle distillates with its unique technical advanta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J29/08B01J35/10C10G47/20
Inventor 王凤来刘昶关明华杜艳泽黄薇赵红
Owner CHINA PETROLEUM & CHEM CORP
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