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Preparation method of zeolite support-based hydrodesulfurization catalyst

A hydrodesulfurization and catalyst technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as deactivation of hydrodesulfurization catalysts

Inactive Publication Date: 2016-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that hydrodesulfurization catalysts based on zeolite supports are prone to rapid deactivation, and provide a method for preparing hydrodesulfurization catalysts based on zeolite supports

Method used

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  • Preparation method of zeolite support-based hydrodesulfurization catalyst
  • Preparation method of zeolite support-based hydrodesulfurization catalyst
  • Preparation method of zeolite support-based hydrodesulfurization catalyst

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specific Embodiment approach 1

[0041] Specific embodiment one: the preparation method of the hydrodesulfurization catalyst based on the zeolite carrier in this embodiment is carried out according to the following steps:

[0042] 1. Prepare nickel salt or cobalt salt and ammonium metatungstate, metatungstic acid or ammonium molybdate into an aqueous solution according to the atomic ratio of tungsten to nickel or cobalt in the ratio of 2 to 3:1, and use the aqueous solution to dry-impregnate the Nickel, cobalt, and tungsten are adsorbed on the desiliconized hierarchical zeolite and alumina carrier respectively, and then calcined at 500-600°C for 4.5-5.5h to obtain the nickel-tungsten catalyst supported by the desiliconized hierarchical zeolite and three A nickel-tungsten catalyst supported by alumina, wherein the mass percentage of tungsten trioxide in the nickel-tungsten catalyst supported by desiliconized hierarchical zeolite or the nickel-tungsten catalyst supported by alumina is 10% to 30%;

[0043] The nic...

specific Embodiment approach 2

[0047] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step one, the mass percentage of tungsten trioxide in the nickel-tungsten catalyst supported by hierarchically porous Beta zeolite or the nickel-tungsten catalyst supported by aluminum oxide is 12% to 28%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0048] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, tungsten trioxide is contained in the nickel-tungsten catalyst supported by hierarchically porous Beta zeolite or the nickel-tungsten catalyst supported by aluminum oxide. The mass percentage is 13% to 25%. Others are the same as those in the first or second embodiment.

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Abstract

The invention provides a preparation method of a zeolite support-based hydrodesulfurization catalyst, and relates to the preparation method of the hydrodesulfurization catalyst. The method is used for solving a problem that the zeolite support-based hydrodesulfurization catalyst is easy to inactivate rapidly. The preparation method comprises the following steps: 1. a desiliconizing hierarchical porous zeolite supported nickel-tungsten catalyst and an aluminum oxide supported nickel-tungsten catalyst are prepared; 2. a mixed catalyst is prepared; 3. prevulcanization is carried out for the catalyst. The Beta zeolite structure in the catalyst is kept after supporting a nickel-tungsten active phase, better prevulcanization can be carried out for active phases which are supported on the Beta zeolite and the aluminum oxide support, and dispersion status of the active phases on various supports is good. The invention belongs to the field of preparation of catalysts.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation desulfurization catalyst. Background technique [0002] Sulfur in fuel produces SO during combustion 2 , Sulfate and sulfite, not only will cause environmental problems such as acid rain and PM2.5, but will also greatly affect the efficiency of engines and exhaust emission devices, resulting in excessive exhaust emissions. Therefore, reducing the sulfur content in fuel oil is considered to be the primary goal of producing clean fuel oil. In view of this, my country successively issued National IV and National V standards in 2011, requiring the sulfur content in fuel oil to be lower than 50ppm and 10ppm respectively. However, due to the cost and the existing process, it is difficult for our country to meet such high desulfurization requirements. [0003] In industry, the desulfurization of fuel oil is mainly completed through the hydrodesulfurization process, and the use of catalyst sup...

Claims

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Application Information

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IPC IPC(8): B01J29/78B01J35/10C10G45/12
CPCC10G45/12B01J23/888B01J29/7815C10G2300/202B01J35/19B01J35/60
Inventor 孙印勇王一
Owner HARBIN INST OF TECH
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