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A kind of hydrocracking catalyst carrier and its preparation method

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 affecting the activity and stability of molecular sieve, affecting the framework structure of molecular sieve, and achieve thermal stability and hydrothermal Good stability, simple process, and good pore size distribution range

Active Publication Date: 2018-04-10
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
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Problems solved by technology

For macromolecular cracking reactions, the ideal pore size range suitable for raw material reactions and product diffusion is 1nm~10nm. Although Y-type molecular sieves can also moderately adjust the distribution of ideal pore size ranges through subsequent modification treatments, the pore size distribution of the original molecular sieve directly determines The distribution of the pore size range of the subsequent modified molecular sieve, and the expansion of the pores will affect the skeleton structure of the molecular sieve, thereby affecting the activity and stability of the molecular sieve

Method used

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  • A kind of hydrocracking catalyst carrier and its preparation method
  • A kind of hydrocracking catalyst carrier and its preparation method
  • A kind of hydrocracking catalyst carrier and its preparation method

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preparation example Construction

[0042] In the preparation method of the large-grain NaY type molecular sieve of the present invention, in the high alkali sodium metaaluminate solution, Na 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.

[0043] The preparation method of large grain NaY type molecular sieve of the present invention specifically comprises the following steps:

[0044] 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, preferably 25~35°C, slowly add water glass to the Mix evenly in high-alkali sodium metaaluminate solution, then add aluminum sulfate solution and low-alkali sodium met...

Embodiment 1

[0060] In this example, large-grain NaY molecular sieves were prepared by the method of the present invention.

[0061] Preparation of LY-1

[0062] (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;

[0063] (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

[0078] 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 2.5-5wt%, 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 hydrocracking catalyst carrier of the invention adopts a Y-type molecular sieve with large grain size and concentrated effective pore size distribution as the acid component, is suitable for the hydrocracking catalyst for increasing the production of high-quality heavy naphtha, and has high catalytic activity and selectivity.

Description

technical field [0001] The invention relates to a hydrocracking catalyst carrier and a preparation method thereof, in particular to a hydrocracking catalyst carrier of a prolific catalytic reforming raw material (heavy naphtha) and a preparation method thereof. Background technique [0002] With the rapid development of the world economy, the market demand for various chemical raw materials, especially aromatic hydrocarbon raw materials, will continue to grow for a long period of time now and in the future. The catalytic reforming technology for the production of aromatic hydrocarbon raw materials is developing rapidly, which enables Demand for heavy naphtha, a feedstock for catalytic reforming, has also increased significantly. As one of the main means of lightening heavy oil, hydrocracking technology is the most suitable refining technology to rationally utilize limited petroleum resources and increase the production of high-quality heavy naphtha. Hydrocracking catalysts ...

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 张林刘昶王凤来关明华杜艳泽黄薇赵红
Owner CHINA PETROLEUM & CHEM CORP
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