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Hydrofining catalyst, preparation method and application thereof, and hydrofining method of distillate oil

A technology for hydrorefining and catalyst, applied in catalyst activation/preparation, refined hydrocarbon oil, catalyst carrier, etc., can solve the problems of small pore size, low activity, high catalytic activity, and achieve the goal of reducing emissions, short process and realizing green manufacturing. Effect

Active Publication Date: 2020-07-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a hydrofinishing catalyst in order to overcome the problem of small pore size and low activity of the hydrofinishing catalyst in the prior art. The proportion is 0.5-30%, and the catalytic activity is high

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0034] The inventors of the present invention found in research that introducing a carboxylic acid compound into a hydrorefining catalyst can improve the activity of the catalyst. Therefore, as long as the carboxylic acid is introduced into the catalyst, the effect of protecting the active components of the catalyst and improving the activity of the catalyst can be achieved, and there is no particular limitation on the added amount. According to a preferred embodiment of the present invention, based on the dry weight of the inorganic refractory component, the content of the carboxylic acid is 3-40 wt%, preferably 10-30 wt%.

[0035] Preferably, the carboxylic acid is selected from C1-18 monobasic saturated carboxylic acids (for example, C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15 , C16, C17, C18 monobasic saturated carboxylic acids) (such as but not limited to formic acid, acetic acid, propionic acid, caprylic acid, pentanoic acid, caproic acid, capric aci...

Embodiment 1

[0079] This embodiment is used to illustrate the hydrorefining catalyst provided by the present invention and its preparation method

[0080] (1) Pseudo-boehmite (Pseudo-boehmite powder produced by Changling Catalyst Factory, with a specific surface area of ​​320m 2 / g, the average pore diameter is 13nm, the pore volume with a pore diameter of 2-4nm accounts for 10% of the total pore volume, and the pore volume with a pore diameter of 4-40nm accounts for 78% of the total pore volume), amorphous silica-alumina powder (SiO 2 content of 10% by weight), magnesium hydroxide powder mixed evenly, and then roasted at 500 ° C for 8 hours to obtain an inorganic refractory component.

[0081] Wherein, based on the dry basis weight of the inorganic refractory component, the content of magnesium oxide is 2.5% by weight, the content of amorphous silicon aluminum is 15% by weight, and the content of aluminum oxide is 82.5% by weight.

[0082] (2) A certain amount of MoO 3 Add basic cobalt...

Embodiment 2

[0089] This embodiment is used to illustrate the hydrorefining catalyst provided by the present invention and its preparation method

[0090] (1) Pseudo-boehmite (Pseudo-boehmite powder produced by Changling Catalyst Factory, with a specific surface area of ​​320m 2 / g, the average pore diameter is 13nm, the pore volume with a pore diameter of 2-4nm accounts for 10% of the total pore volume, and the pore volume with a pore diameter of 4-40nm accounts for 78% of the total pore volume), amorphous silica-alumina powder (SiO 2 content of 15% by weight), calcium hydroxide powder mixed evenly, and then roasted at 600 ° C for 5 hours to obtain an inorganic refractory component.

[0091] Wherein, based on the dry weight of the inorganic refractory component, the content of calcium oxide is 3.0% by weight, the content of amorphous silicon aluminum is 20.0% by weight, and the content of aluminum oxide is 77.0% by weight.

[0092] (2) A certain amount of MoO 3 , basic nickel carbonate...

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Abstract

The invention relates to the field of hydrorefining catalysts, and discloses a hydrotreating catalyst, a preparation method and applications thereof, and a hydrotreating method of distillate oil. Thecatalyst contains an inorganic refractory component, an active component and a carboxylic acid, and has pore sizes of 4-40 nm and 100-300 nm, wherein the pore volume of the pores with the pore size of4-40 nm accounts for 60-95% of the total pore volume, the pore volume of the pores with the pore size of 100-300 nm accounts for 0.5-30% of the total pore volume, and the inorganic refractory component contains at least one selected from fluorine, zirconium, titanium, boron, magnesium, calcium and zinc, amorphous silicon aluminum and / or molecular sieve, and alumina. The preparation method comprises: mixing a precursor containing at least one selected from fluorine, zirconium, titanium, boron, magnesium, calcium and zinc, amorphous silicon aluminum and / or molecular sieve and an alumina precursor, and calcining to obtain an inorganic refractory component; and mixing a carboxylic acid and an active component precursor to obtain an immersion liquid, mixing the immersion liquid and the inorganic refractory component, molding, and drying. According to the present invention, the catalyst has the pore size of 100-300 nm, and has good performance, and the preparation process is shortened.

Description

technical field [0001] The invention relates to the field of hydrofinishing catalysts, in particular to a hydrofinishing catalyst, a method for preparing a hydrofining catalyst and a hydrofining catalyst prepared by the method, and the hydrofining catalyst is used in distillate oil hydrofining The application in, and a kind of hydrofinishing method of distillate oil. Background technique [0002] Hydroprocessing is a pillar technology in the modern oil refining industry, which plays an important role in producing clean fuels, improving product quality, making full use of petroleum resources and raw material pretreatment. With the development of economy, environmental protection and society, oil refining companies have continuously put forward higher requirements for the activity and stability of hydrotreating catalysts, and the activity and selectivity of hydrotreating catalysts need to be continuously improved. Among them, hydrodesulfurization activity is an important inde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J23/883B01J27/19B01J29/16B01J35/10B01J37/02B01J37/08B01J32/00C10G45/04C10G45/12
Inventor 陈文斌李明丰龙湘云聂红李大东王轶凡鞠雪艳
Owner CHINA PETROLEUM & CHEM CORP