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

A hydrofining and catalyst technology, which is applied in the direction of refined hydrocarbon oil, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problems of low activity, small pore size, high catalytic activity, etc., and achieve process Short, reduce emissions, and achieve the effect of green manufacturing

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0034] The inventors of the present invention have discovered in research that the introduction of carboxylic acid compounds into the 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 the amount of addition is not particularly limited. According to a preferred embodiment of the present invention, based on the dry basis weight of the inorganic refractory component, the content of the carboxylic acid is 3-40% by weight, preferably 10-30% by weight.

[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 acid) (such as but not limited to formic acid, acetic acid, propionic acid, caprylic acid, valeric ...

Embodiment 1

[0067] This example is used to illustrate the hydrofining catalyst provided by the present invention and its preparation method

[0068] (1) Pseudo-boehmite (Pseudo-boehmite powder produced by Changling Catalyst Factory, with a specific surface area of ​​320m 2 / g, the average pore size is 13nm, the pore volume with pore size of 2-4nm accounts for 10% of the total pore volume, and the pore volume with pore size of 4-40nm accounts for 78% of the total pore volume) Calcination at 500℃ for 8h , To obtain inorganic refractory components.

[0069] (2) Put a certain amount of MoO 3 , Basic cobalt carbonate and citric acid are respectively added to the aqueous solution containing phosphoric acid, heated and stirred until completely dissolved to obtain an impregnation solution containing active metal.

[0070] Among them, the mass of citric acid is 10% by weight of the inorganic refractory components.

[0071] (3) Mix the dipping solution and the inorganic refractory components uniformly, and...

Embodiment 2

[0076] This example is used to illustrate the hydrofining catalyst provided by the present invention and its preparation method

[0077] (1) Pseudo-boehmite (Pseudo-boehmite powder produced by Changling Catalyst Factory, with a specific surface area of ​​320m 2 / g, the average pore size is 13nm, the pore volume with pore size of 2-4nm accounts for 10% of the total pore volume, and the pore volume with pore size of 4-40nm accounts for 78% of the total pore volume) Calcination at 600°C for 5h , To obtain inorganic refractory components.

[0078] (2) Put a certain amount of MoO 3 , Basic nickel carbonate and acetic acid are respectively added to the aqueous solution containing phosphoric acid, heated and stirred until completely dissolved to obtain an impregnating solution containing active metal.

[0079] Among them, the mass of acetic acid is 15% by weight of the inorganic refractory components.

[0080] (3) Mix the dipping solution and the inorganic refractory components uniformly, an...

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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 is alumina. The preparation method comprises: calcining an alumina precursor to obtain an inorganic refractory component; and mixing a carboxylic acid and an active component precursor to obtain animmersion 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 hydrorefining catalysts, in particular to a hydrorefining catalyst, a preparation method of a hydrorefining catalyst, and a hydrorefining catalyst prepared by the method. The hydrorefining catalyst is used in the hydrorefining of distillate oil In the application, and a distillate oil hydrorefining method. Background technique [0002] Hydrotreating is a pillar technology in the modern oil refining industry. It 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 refinery companies continue to 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, the hydrodesulfurization activity is an important indicator to meas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/652B01J23/86B01J23/881B01J23/882B01J23/883B01J23/888B01J27/19C10G45/04C10G45/06C10G45/08C10G45/10
Inventor 陈文斌龙湘云李明丰聂红李大东刘学芬刘清河王轶凡鞠雪艳
Owner CHINA PETROLEUM & CHEM CORP