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Hydrogenation catalyst with gradient-decreasing-distributed active metal constituent concentration and preparation method thereof

A hydrogenation catalyst and active metal technology, which is applied in the field of hydrogenation catalyst and preparation, can solve the problems of poor distribution gradient of active metal components, and achieve low manufacturing cost, broad application prospects, and good demetallization effects

Active Publication Date: 2012-03-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the distribution gradient of active metal components is poor

Method used

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  • Hydrogenation catalyst with gradient-decreasing-distributed active metal constituent concentration and preparation method thereof
  • Hydrogenation catalyst with gradient-decreasing-distributed active metal constituent concentration and preparation method thereof
  • Hydrogenation catalyst with gradient-decreasing-distributed active metal constituent concentration and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this example, Al 2 o 3 As a carrier, the water absorption rate is 1.10mL / g. Catalysts with active metal components of Mo and Ni were prepared by saturated spray immersion method.

[0023] Weigh 150g carrier, spray 50mL containing 18.6g ammonium molybdate (containing MoO 3 82m%) and 17.10g nickel nitrate (containing NiO 25.2m%) ammonia solution, drop 115mL ammonia solution with a concentration of 10% into the dipping solution at a constant speed during the spraying process and stir, while spraying and dipping, 25 Spray and soak in minutes. After homogenizing for 20 minutes in the spray-dipping equipment, dry at 60°C for 2 hours, take it out and dry at 120°C for 3 hours, and then bake it in air at 500°C for 3 hours to obtain the catalyst, coded as C-1.

Embodiment 2

[0025] This example uses 1.5% m SiO 2 Al 2 o 3 As a carrier, the water absorption rate is 1.10mL / g. Catalysts with active metal components of Mo and Co were prepared by saturated spray immersion method.

[0026] Weigh 150g carrier, spray 50mL containing 18.6g ammonium molybdate (containing MoO 3 82m%) and 17.1g cobalt nitrate (containing CoO 25.2m%) ammonia solution, drop 115mL ammonia solution with a concentration of 10% into the impregnation solution at a constant speed during the spraying process and stir evenly, while dripping and spraying , 15 minutes spray soaking finished. After being homogenized for 20 minutes in a spray-dipping device, it was dried at 120°C for 5 hours, and then calcined in air at 500°C for 4 hours to obtain a catalyst, coded as C-2.

Embodiment 3

[0028] In this example, 1.0% m SiO 2 , 1.5m%TiO 2 Al 2 o 3 As a carrier, the water absorption rate is 1.10mL / g. The catalysts with active metal components of W and Ni were prepared by saturated spray immersion method.

[0029] Weigh 150g carrier, spray 50mL containing 18.6g ammonium metatungstate (containing WO 3 82m%) and 17.10g of nickel nitrate (containing 25.2m%) of nickel nitrate (containing NiO 25.2m%) ammonia solution, drop 115mL ammonia solution with a concentration of 10% into the dipping solution at a uniform speed during the dipping process and stir evenly, spray dipping while dripping, 12 Spray and soak in minutes. After 10 minutes of homogenization in the spray immersion equipment,. After taking it out, it was dried at 120°C for 8 hours, and then calcined in air at 500°C for 5 hours to obtain a catalyst, coded as C-3.

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Abstract

The invention relates to a hydrogenation catalyst with gradient-decreasing-distributed active metal constituent concentration and a preparation method thereof. The preparation method comprises the following steps: by using Al2O3 or Al2O3 containing SiO2, TiO2 and ZrO2 as the carrier, mixing molybdenum and / or tungsten compounds and / or nickel and / or cobalt compounds with deionized water or ammonia water to obtain a metal dipping solution; preparing a thicker metal dipping solution dipping carrier, and gradually adding deionized water or ammonia water to dilute the metal dipping solution saturated spray carrier, or preparing metal dipping solutions with at least two different concentrations; and drying at 80-150 DEG C for 1-8 hours, and roasting in the air at 300-650 DEG C for 2-6 hours. Thecatalyst contains 1.0-10.0 wt% of molybdenum and / or tungsten oxides and / or 0.2-5.0 wt% of cobalt and / or nickel oxides. The hydrogenation catalyst has favorable activities of demetallization, carbon residue removal, devulcanization and denitrification, has the advantages of high stability, simple preparation and low cost, and is used for hydrogenating heavy-weight oil.

Description

technical field [0001] The invention relates to a hydrogenation catalyst with a gradient-reducing distribution of active metal components and a preparation method thereof, which can be used in the field of heavy oil hydrogenation, and is especially suitable for vacuum wax oil, coking wax oil, deasphalted oil, and atmospheric slag Upgrading and conversion of oil and vacuum residue. Background technique [0002] In recent years, the heavy and inferior quality of crude oil has intensified around the world, while the market demand for light oil products has increased year by year. Therefore, the development of deep processing of heavy oil is an urgent task for the oil refining industry. Heavy oil contains a large amount of metal impurities such as Ni, V, Ca, and Fe. During the hydrotreating process, these metal impurities will be deposited in the catalyst pores, causing the catalyst pores to be blocked and deactivated. To this end, the life of the catalyst must be increased to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/02B01J35/02B01J23/883B01J23/882B01J23/888C10G45/08
Inventor 赵愉生赵元生谭青峰程涛张上崔瑞利
Owner PETROCHINA CO LTD
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