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A toothed spherical alumina carrier, a toothed spherical hydrotreating catalyst and a preparation method thereof

A spherical alumina and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, treatment of hydrocarbon oil, etc. The effect of reducing the amount, optimizing the pore size distribution, and saving production costs

Active Publication Date: 2016-06-08
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the study found that the addition of peptizers, pore expanders, and forming aids will also have negative effects, mainly reflected in: the addition of peptizers with too large a proportion will seriously reduce the pore volume and specific surface area of ​​the carrier; Diffusion additives such as cellulose, CO 2 Escape produces a large number of micropores and increases the specific surface area and pore volume of the carrier, but at the same time it will lead to a decrease in the strength of the carrier. For methyl cellulose, when it is added in excess, it will reduce the pore volume and specific surface area of ​​the carrier.

Method used

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  • A toothed spherical alumina carrier, a toothed spherical hydrotreating catalyst and a preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of the toothed spherical alumina carrier described in this embodiment comprises the following steps:

[0035] (1) Weigh 100g of macroporous aluminum hydroxide with a pore diameter of 15-20nm produced by the carbonization method, 1.3g of the lubricant scallop powder, 3g of the dispersant ethyl cellulose, and 4g of the pore-enlarging agent sodium polyacrylate, and mix them by stirring After mixing the above-mentioned various components by machine for 20 minutes, add nitric acid solution 4g of peptizer mass concentration 60wt%, anionic surfactant dodecyl phosphate monoester 5g and deionized water 15g, then adopt kneader to mix 20 Minutes to make a soft block plastic body;

[0036] (2) Put the soft block-shaped plastic body prepared in step (1) into the chute of the extruder, extrude through the toothed spherical orifice plate, and then cut into pellets with a cutter, and keep it at room temperature for 40 minutes. , dried at 120°C for 3 hours, and c...

Embodiment 2

[0038] The preparation method of the toothed spherical alumina carrier described in this embodiment comprises the following steps:

[0039] (1) Weigh 100g of macroporous aluminum hydroxide with a pore diameter of 5-12nm produced by the carbonization method, 1.3g of a mixture of squash powder and stearic acid at a mass ratio of 1:1 as a lubricant, and ethyl cellulose as a dispersant 1.5 g of a mixture of cellulose and hydroxyethyl cellulose in a mass ratio of 1:1, and a pore-enlarging agent is a mixture of polyvinyl alcohol, sodium polyacrylate, starch derivatives and carbon black in a mass ratio of 1:1:1:1 1.5g, and use a stirring mixer to mix the above-mentioned various components for 40 minutes, add peptizers to be nitric acid solution (mass concentration is 60wt%), citric acid solution (mass concentration is 90wt%), acetic acid solution (mass concentration 30wt%) and tartaric acid solution (mass concentration 30wt%) with a mass ratio of 1:1:1:1 mixed acid solution consistin...

Embodiment 3

[0042] The preparation method of the toothed spherical alumina carrier described in this embodiment comprises the following steps:

[0043] (1) Weigh a total of 100g of the mixture of macroporous aluminum hydroxide produced by carbonization method and small-pore aluminum hydroxide produced by nitric acid method with a mass ratio of 1:1, 2g of lubricant kale powder, and dispersant ethyl cellulose 0.2g and 0.3g of pore-enlarging agent carboxymethyl starch, and after using a stirring mixer to mix the above-mentioned various components for 60 minutes, add 0.5g of acetic acid solution with a mass concentration of peptizer of 30wt%, and anionic surfactant butyloctyl Dithioester 0.2g and deionized water 14g, then adopt kneader to mix for 60 minutes, make soft lump plastic body;

[0044] (2) Put the soft block-shaped plastic body prepared in step (1) into the chute of the extruder, extrude through the toothed spherical orifice plate, and then cut into pellets with a cutter, and keep i...

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Abstract

The invention relates to a toothed spherical alumina carrier, a toothed spherical alumina hydrogenation catalyst and a preparation method thereof, comprising the following components: peptizer, 0.5-4 parts by weight; lubricant, 0.2-2 parts by weight; dispersant, 0.2-3 parts by weight; pore expander, 0.3-4 parts by weight; aluminum hydroxide, 100 parts by weight. The toothed spherical alumina carrier of the present invention not only saves the cost but also has a specific surface area due to the substantial reduction in the content of various additives such as peptizers, pore expanders, dispersants, and anionic surfactants. Large, high mechanical strength and other advantages.

Description

technical field [0001] The invention relates to a toothed spherical alumina carrier, a toothed spherical hydrogenation catalyst and a preparation method thereof, belonging to the technical field of hydrogenation catalysts. Background technique [0002] With the development of the national economy, people's demand for energy is increasing. Petroleum is one of the important energy sources. Due to its non-renewability, petroleum resources, especially light oil resources, are decreasing day by day. With the reduction of light oil resources, the proportion of heavy oil in the world's oil production is increasing, and the content of residual oil in heavy oil is as high as 60%. Therefore, the lightening of heavy oil is very important in the current refining industry. One of the important jobs. Hydrotreating of heavy oil is one of the important means of lightening heavy oil. The so-called hydrotreating of heavy oil refers to the process of hydrodesulfurization of heavy oil in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/04B01J27/188B01J27/185B01J35/08C10G49/04
Inventor 闫闯赵素云李景斌
Owner SHENYANG SANJUKAITE CATALYST
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