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A kind of hydrocracking catalyst carrier and its preparation method

A catalyst carrier, hydrocracking technology, 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., to achieve good hydrothermal stability and process flow. Simple, high silicon-to-aluminum ratio

Active Publication Date: 2018-03-16
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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  • 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

[0043] 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.

[0044] 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:

[0045] 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

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

[0061] Preparation of Y-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, washing...

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 2.5-5.0wt%, 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 concentrated effective pore size distribution as the main cracking component, the hydrocracking catalyst prepared from the carrier is suitable to serve as the hydrocracking catalyst for flexible production of high quality heavy naphtha, aviation kerosene and diesel, and has very high 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 for flexible production of heavy naphtha, jet fuel and diesel oil and a preparation method thereof. Background technique [0002] The main features of hydrocracking technology are strong adaptability of raw materials, flexible product solutions, high selectivity of target products, good product quality and high added value, etc., and can directly produce a variety of high-quality petroleum products (such as gasoline, jet fuel, diesel oil, lubricating oil, etc.) Base oil, etc.) and high-quality chemical raw materials (such as raw materials for the production of benzene, toluene, xylene, ethylene, etc.). Therefore, as the quality of crude oil deteriorates year by year, the market demand for high-quality petroleum products and high-quality chemical raw materials continues to grow, and new environmental protection re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J29/16C10G47/16C10G47/20C01B39/24
Inventor 刘昶张林王凤来关明华杜艳泽黄薇赵红
Owner CHINA PETROLEUM & CHEM CORP
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