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Preparation method for hydrorefining catalyst

A hydrogenation catalyst and hydrorefining technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of reducing the dispersion of metal active components, carrier The problems of limited pore surface area and limited catalyst activity can achieve the effect of multiple hydrogenation reaction active sites, uniform distribution of metal components, and simple method.

Active Publication Date: 2014-12-24
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that this method has a certain novelty, but there are also some defects, such as the limited surface area of ​​the carrier pores, and the nickel molybdate compounds generated by the in-situ reaction in the carrier pores are easy to accumulate and block the pores, reducing the amount of metal active components. Dispersion, which limits the improvement of catalyst activity

Method used

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  • Preparation method for hydrorefining catalyst
  • Preparation method for hydrorefining catalyst
  • Preparation method for hydrorefining catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0020] This example illustrates the preparation method of the catalyst of the present invention.

[0021] Weigh 500g of aluminum hydroxide dry glue, 68g of basic nickel carbonate, and 20g of polyethylene glycol. After fully mixing the three dry powder materials with a pulverizer, add 2wt% nitric acid solution and knead them, and extrude them with an extruder. , the extrudate was dried at 120°C for 20 hours and calcined at 400°C for 5 hours to obtain NiO-Al 2 o 3 Complex. Weigh 15.9g of ammonium molybdate heptahydrate and dissolve it in 300g of deionized water, add 1.8g of urea and 30g of ethylene glycol, stir the mixed solution well and pour it into the autoclave, weigh 17g of the prepared nickel oxide-alumina composite Put it into the autoclave, close the reaction kettle, heat up to 100°C for 20 hours; cool to room temperature, open the reaction kettle, take out the catalyst, filter, wash with water, dry the obtained product in an oven at 120°C for 10 hours, and roast at 500°...

Embodiment 2

[0023] This example illustrates the preparation method of the catalyst of the present invention.

[0024] Weigh 500g of aluminum hydroxide dry glue, 68g of basic nickel carbonate, and 20g of polyethylene glycol. After fully mixing the three dry powder materials with a pulverizer, add 2wt% nitric acid solution and knead them, and extrude them with an extruder. , The extruded product was dried at 120°C for 20 hours and calcined at 400°C for 5 hours to obtain a nickel oxide-alumina composite. Weigh 15.9g of ammonium molybdate heptahydrate and dissolve it in 300g of deionized water, add 1.8g of urea and 30g of ethylene glycol, stir the mixed solution well and pour it into the autoclave, weigh 17g of the prepared nickel oxide-alumina composite Put it into an autoclave, close the reaction kettle, heat up to 150°C and react for 20 hours; cool to room temperature, open the reaction kettle, take out the catalyst, filter, wash with water, dry the obtained product in an oven at 120°C for...

Embodiment 3

[0026] This example illustrates the preparation method of the catalyst of the present invention.

[0027] Weigh 500g of aluminum hydroxide dry glue, 85g of basic nickel carbonate, and 20g of polyethylene glycol, fully mix the three kinds of dry powder materials with a pulverizer, add 2wt% nitric acid solution and knead, and extrude them with an extruder , The extruded product was dried at 120°C for 20 hours and calcined at 400°C for 5 hours to obtain a nickel oxide-alumina composite. Weigh 15.9g of ammonium molybdate heptahydrate and dissolve it in 300g of deionized water, add 1.8g of urea and 30g of ethylene glycol, stir the mixed solution well and pour it into the autoclave, weigh 17g of the prepared nickel oxide-alumina composite Put it into an autoclave, close the reaction kettle, heat up to 150°C and react for 20 hours; cool to room temperature, open the reaction kettle, take out the catalyst, filter, wash with water, dry the obtained product in an oven at 120°C for 10 ho...

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Abstract

The present invention relates to a preparation method for a high hydrogenation activity catalyst. The method comprises that: a VIII group metal-containing solid compound and alumina are subjected to kneading, strip extruding and forming to prepare a high specific surface area alumina complex containing the VIII group metal; then the alumina complex containing the VIII group metal, a salt solution of a VIB group metal, urea and a reaction aid are subjected to a hydrothermal reaction in an autoclave; and treatments of drying and calcination are performed to prepare the hydrorefining catalyst. Compared with catalysts prepared by the conventional impregnation method, the catalyst prepared by the preparation method of the present invention has the following characteristics that: the reaction on the carrier surface is performed to generate a novel metal activity phase precursor so as to easily vulcanize into the II type Co(Ni)-Mo(W)-S phase with the higher hydrogenation activity, and formation of spinel with no hydrogenation activity is reduced, such that activities of hydrodesulfurization and hydrodenitrogenation of the catalyst can be substantially improved, and the method is particularly suitable for deep hydrorefining of poor quality high sulfur distillate oil.

Description

technical field [0001] The invention relates to a preparation method of a high-activity hydrogenation refining catalyst, which belongs to the improvement of the preparation method of a hydrogenation catalyst in the chemical and chemical technology field. technical background [0002] The traditional hydrogenation catalyst in industry is a supported catalyst prepared by impregnation method, and the typical carrier material generally has Al 2 o 3 , silica, zeolite molecular sieve, diatomaceous earth and MgO, etc. In the traditional impregnation preparation method, due to the need for roasting in the preparation process, on the one hand, the active components are prone to agglomeration, which results in a reduction in the dispersion of the active components; Al 2 o 3 The formation of a strong M-O-Al bond, the so-called "carrier effect", causes the active component of the catalyst to form a spinel and lose its activity, or causes the active component to be difficult to vulca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883B01J23/888B01J23/882C10G45/08
Inventor 殷长龙刘晨光赵会吉柴永明柳云骐赵瑞玉张孔远崔德强
Owner BC P INC CHINA NAT PETROLEUM CORP
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