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Hydrocracking catalyst carrier and preparation method thereof

A catalyst carrier, hydrocracking technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low yield of molecular sieves, increased modification costs and energy consumption, and long steps for modified molecular sieves and other problems, to achieve the effect of uniform cracking center, uniform and stable skeleton structure, and uniform skeleton silicon-aluminum structure

Active Publication Date: 2015-06-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the steps of modifying molecular sieves in this method are relatively long, and the yield of target molecular sieves in the preparation process is low. At the same time, the multi-step modification process greatly increases the modification cost and energy consumption.

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

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preparation example Construction

[0035] The preparation method of the used β molecular sieve of hydrocracking catalyst carrier of the present invention specifically comprises the following steps:

[0036] (1) Contact the original powder of β molecular sieve with normal pressure and dynamic water vapor, the contact temperature is 500~650℃, and the time is 5~10 hours;

[0037] (2) Contacting the product obtained in step (1) with ammonium fluorosilicate, then filtering, washing with water and drying to obtain β molecular sieve.

[0038] In step (1), the method of contacting the original powder of β molecular sieve with normal pressure and dynamic water vapor is preferably to place the original powder of β molecular sieve in a container, then introduce water vapor from one end of the container, and pass through the original powder of β molecular sieve from The other end of the container is drained. In order to make the molecular sieve treatment more uniform, it is best to place the molecular sieve in a rotating ...

Embodiment 1

[0063] Take the original powder of β molecular sieve (synthesized by hydrothermal method using tetraethylammonium hydroxide as template agent, the weight content of the template agent in the original powder of β molecular sieve is about 11.8%, provided by Sinopec Catalyst Fushun Branch), its chemical SiO 2 / Al 2 o 3 The molar ratio is 25.5, Na 2 O content is 2.45wt%, in its skeleton structure, through 29 Si MAS NMR spectrum, the distribution of silicon atoms in different coordination states is obtained as follows: Si (4Al) is 7.6%, Si (3Al) is 30.6%, Si (2Al) is 32.3%, Si (1Al) is 21.0% %, Si (0Al) is 8.5%. Take 1000g of the above-mentioned β molecular sieve raw powder, put it into a tube furnace, adopt the method of temperature program (heating rate is 100°C / hour), and start to introduce 100wt% water vapor when the temperature of the tube furnace rises to 300°C, water vapor The flow rate is 50L / hour, the tube furnace is heated to 550°C, and the constant temperature time ...

Embodiment 2

[0065] Get the former powder of β molecular sieve with embodiment 1. Take 1000g of the above-mentioned molecular sieve, put it into a tube furnace, adopt the method of temperature program (heating rate: 100°C / hour), and start to introduce 100wt% water vapor when the temperature of the tube furnace rises to 300°C, the flow rate of water vapor is 70L / hour, the tube furnace is heated to 600°C, and the constant temperature time is 8 hours. The obtained molecular sieve number is BS-2.

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Abstract

The invention discloses a hydrocracking catalyst carrier and a preparation method thereof. The carrier contains a beta molecular sieve, a Y type molecular sieve and aluminum oxide, wherein the natures of the beta molecular sieve are as follows: the molar ratio of SiO2 / Al2O3 is 30-150, non-framework aluminum accounts for below 2% of total aluminum, and silicon atoms coordinated by a Si(OAl) structure account for above 95% of the silicon atoms in a framework structure. The preparation method comprises the following steps: mixing the beta molecular sieve, the Y type molecular sieve and aluminum oxide and forming for preparation. In the catalyst disclosed by the invention, the beta molecular sieve with a uniform framework silica-alumina structure and the Y type molecular sieve are jointly used as a cracking component, and the prepared catalyst has the characteristics of high activity, high yield of high-quality intermediate fraction oil and capability of simultaneously co-producing high-quality hydrogenation tail oil in a hydrocracking process.

Description

technical field [0001] The invention relates to a hydrocracking catalyst carrier and a preparation method thereof, especially a hydrocracking catalyst carrier which adopts β and Y-type molecular sieve composite components as the main cracking components, and is suitable for preparing high-quality middle distillate oil with high yields and its preparation method. Background technique [0002] In recent years, the demand for high-quality middle distillate products in oil markets around the world has been growing continuously. With the rapid development of economy, this contradiction between supply and demand has become more prominent. With its unique advantages, hydrocracking technology has become the best means for deep processing of heavy oil to produce high-quality clean middle distillate. [0003] At present, the activity of medium-oil hydrocracking catalysts in various countries in the world is not very high, and the freezing point of the obtained diesel oil is also high...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G47/20C10G47/16
Inventor 王凤来王珂琦刘昶杜艳泽赵红关明华
Owner CHINA PETROLEUM & CHEM CORP
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