Catalyst for hydrogenation and upgrading of diesel oil and preparation method thereof

A hydrogenation modification and catalyst technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of low yield of molecular sieves, increased modification costs and energy consumption, and long steps of 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: 2017-04-12
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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  • Catalyst for hydrogenation and upgrading of diesel oil and preparation method thereof
  • Catalyst for hydrogenation and upgrading of diesel oil and preparation method thereof
  • Catalyst for hydrogenation and upgrading of diesel oil and preparation method thereof

Examples

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preparation example Construction

[0035] The preparation method of the β molecular sieve used in the hydrogenation upgrading 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 ...

Embodiment 1

[0066] 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

[0068] 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 hydroupgrading catalyst and a preparation method thereof. The catalyst contains a hydrogenation active metal component and a carrier, wherein the carrier comprises a beta molecular sieve and aluminum oxide; and 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 and aluminum oxide, forming to prepare the carrier, and loading the hydrogenation active metal component by adopting a conventional method. The catalyst disclosed by the invention is adopted in a diesel hydroupgrading process, and the catalyst has the characteristics of high yield of a diesel product, good product quality and the like.

Description

technical field [0001] The invention relates to a hydrogenation upgrading catalyst and a preparation method thereof, in particular to a kind of diesel oil which can be produced by using low-quality diesel oil as a raw material, with high yield of diesel products, high cetane number, large density reduction range and low freezing point, etc. A characteristic diesel hydro-upgrading catalyst and a preparation method thereof. Background technique [0002] Due to the performance advantages of diesel engines and their widespread use, the demand for diesel has been strong. In addition, in order to protect the ecological environment on which human beings depend, higher requirements are placed on the quality of diesel products. "World Fuel Oil Code" starts from the II standard, and the content of sulfur and aromatics, cetane number, density, T 95 and other indicators put forward more stringent requirements. [0003] The diesel currently produced mainly includes straight-run diesel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/78C10G49/08
Inventor 王凤来刘昶王珂琦杜艳泽赵红关明华
Owner CHINA PETROLEUM & CHEM CORP
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