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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 affecting the framework structure of molecular sieve, low catalytic activity of catalyst, and reduction of crystallinity of molecular sieve, etc., to overcome energy High consumption, high catalytic activity and isomerization ability, and the effect of improving product selectivity

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

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Problems solved by technology

This method is to burn the original powder of β molecular sieve at high temperature to remove the template agent, which will affect the skeleton structure of the molecular sieve, greatly reduce the crystallinity of the molecular sieve, and also affect the acidity of the molecular sieve. The catalytic activity of the catalyst prepared by this method is not high. , the product quality of aviation fuel and diesel middle distillates still needs to be further improved

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

[0036] The preparation method of the used β molecular sieve of hydrocracking catalyst carrier of the present invention specifically comprises the following steps:

[0037] (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;

[0038] (2) Contacting the product obtained in step (1) with ammonium fluorosilicate, then filtering, washing with water and drying to obtain β molecular sieve.

[0039] 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

[0064] 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

[0066] 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, amorphous silica-alumina 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, amorphous silica-alumina and aluminum oxide and forming for preparation. In the carrier disclosed by the invention, the beta molecular sieve with a uniform framework silica-alumina structure and amorphous silica-alumina are jointly used as a cracking component, a prepared catalyst is used in a hydrocracking process, and the catalyst has the characteristics of high activity and high yield of low-freezing point diesel.

Description

technical field [0001] The invention relates to a hydrocracking catalyst carrier and a preparation method thereof, and is particularly suitable for a hydrocracking catalyst carrier with high activity and high yield of low-condensation-point diesel oil and a preparation method thereof. Background technique [0002] Hydrocracking technology has the characteristics of strong adaptability of raw materials, great flexibility of product schemes, high selectivity of target products, good product quality, and high added value. It can directly convert various heavy and low-quality raw materials into clean fuel oil and high-quality chemical raw materials. It has become one of the most important heavy oil deep processing techniques in modern oil refining and petrochemical industries, and has been increasingly widely used in countries all over the world. As the quality of crude oil is deteriorating year by year, high-sulfur crude oil has increased significantly, and environmental protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J29/78C10G47/20
Inventor 刘昶王珂琦王凤来杜艳泽赵红关明华
Owner CHINA PETROLEUM & CHEM CORP
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