Hydrogenation catalyst showing gradient increase and distribution of concentration of active metal and acid additive and preparation method thereof

A technology of hydrogenation catalyst and acid promoter, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problems of difficult control and poor gradient of active metal distribution. , to achieve the effect of low manufacturing cost, simple preparation process and high desulfurization

Active Publication Date: 2010-12-29
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 active metal d

Method used

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  • Hydrogenation catalyst showing gradient increase and distribution of concentration of active metal and acid additive and preparation method thereof
  • Hydrogenation catalyst showing gradient increase and distribution of concentration of active metal and acid additive and preparation method thereof
  • Hydrogenation catalyst showing gradient increase and distribution of concentration of active metal and acid additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this example, Al 2 o 3 As a carrier, the water absorption rate is 1.10mL / g, and the catalyst whose active metal components are Mo and Ni is prepared by saturated spray immersion method.

[0026] Weigh 150g carrier, spray immerse 65ml containing 5.8g ammonium molybdate (containing MoO 3 82m%, Beijing Chemical Reagent Company, the same below), 2.0g nickel nitrate (containing NiO 25.2m%, Beijing Chemical Reagent Company, the same below) and 1.0g 85% phosphoric acid (Beijing Chemical Reagent Company, the same below); spray After immersion, then spray 50ml containing 8.0g ammonium molybdate (containing MoO 3 82m%), 6.0g nickel nitrate (containing NiO 25.2m%) and 3.0g 85% phosphoric acid aqueous solution; 3 82m%), 19.0g nickel nitrate (containing NiO 25.2m%) and 6.0g 85% phosphoric acid aqueous solution, spray immersion in 15 minutes. After homogenizing for 10 minutes in the spray-dipping equipment, dry at 60°C for 2 hours, take it out and dry at 120°C for 3 hours, ...

Embodiment 2

[0028] This example uses 1.5m% SiO 2 Al 2 o 3 As a carrier, the catalyst with active metal components of Mo and Co was prepared by saturated spray-dipping method.

[0029] Weigh 150g, water absorption rate 1.10mL / g containing 1.5m% SiO 2 Al 2 o 3 Carrier, spray 100ml containing 5.0g ammonium molybdate (containing MoO 3 82m%) and 6.0g of cobalt nitrate (containing CoO 25.2m%, Beijing Chemical Reagent Company, the same below), 1.0g of 50% ammonium fluoride aqueous solution, drop into 65ml containing 24.8g ammonium molybdate (containing MoO 3 82m%), 21.0g cobalt nitrate (containing CoO25.2m%) and 5g 50% ammonium fluoride (Beijing Chemical Reagent Company, the same below) aqueous solution in the impregnating solution and stir evenly, drop while spray dipping, 5 minutes Dipping is done. After being homogenized for 10 minutes in the spray-dipping equipment, it was dried at 120°C for 3 hours, and then calcined in air at 500°C for 3 hours to prepare the catalyst. Numbered C...

Embodiment 3

[0031] In this example, 1.0m% SiO 2 and 1.5m%TiO 2 Al 2 o 3 As a carrier, the water absorption rate is 1.10mL / g, and the catalyst whose active metal components are W and Ni is prepared by saturated spray immersion method.

[0032] Weigh 150g carrier, spray 100ml containing 7g ammonium metatungstate (containing WO 3 82m%, Beijing Chemical Reagent Company, the same below), 5.0g nickel nitrate (containing NiO 25.2m%) and 5.0g 85% boric acid (Beijing Chemical Reagent Company, the same below) aqueous solution, drip into 65ml at a constant speed during the spray immersion process Contains 11.8g ammonium metatungstate (contains WO 3 82m%), 12.0g nickel nitrate (containing NiO 25.2m%) and 16.0g 85% boric acid aqueous solution in the impregnating solution and stirred evenly, while spraying while dripping, the impregnation was completed in 5 minutes. After homogenizing for 10 minutes in the spray-dipping equipment, dry at 60°C for 2 hours, take it out and dry at 120°C for 6 hours...

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Abstract

The invention relates to a preparation method of a hydrogenation catalyst showing gradient increase and distribution of concentration of an active metal and an acid additive. The method comprises the following steps: firstly preparing a relatively dilute active metallic solution and an acid additive solution and deionized water, and then gradually adding a relatively concentrated active metallic solution and an acid additive solution to dip a carrier under a saturate condition during the dipping process; or preparing an active metallic solution and an acid additive solution with different concentrations, and then dipping the active metallic impregnation liquid and the acid additive solution on the carrier in a low-to-high order based on the concentrations; or dipping the carrier with the low-concentration acid additive solution and the deionized water, and gradually adding the high-concentration acid additive solution to the impregnation liquid during the dipping process; drying and roasting; dipping the carrier with the low-concentration active metallic solution and the deionized water, and gradually adding the high-concentration active metallic solution to the impregnation liquid during the dipping process; or dipping the carrier with the active metallic solution followed by the acid additive solution. The method of the invention has higher desulfuration activity, higher denitrification activity and higher residual carbon removal activity, higher stability and simple preparation process.

Description

technical field [0001] The invention relates to a hydrogenation catalyst whose concentrations of active metals and acidic additives are distributed in a gradient-increasing manner and a preparation method thereof. Background technique [0002] As crude oil becomes heavier and inferior worldwide, and environmental protection regulations become increasingly stringent, the market demand for light oil products is increasing year by year. The development of deep processing of heavy oil is an urgent task for the oil refining industry, and hydrogenation technology is the main processing method. Facing great challenges, it is urgent to develop a better hydrogenation process and a hydrogenation catalyst with higher activity and stability. In terms of catalysts, there is an urgent need to develop catalysts with higher desulfurization, denitrogenation, carbon residue removal, dearomatization activity and stability, improve product performance, improve product quality; at the same time ...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J27/185B01J27/132B01J27/128B01J23/888B01J21/02B01J37/02B01J37/08C10G45/08
Inventor 赵愉生赵元生程涛张上崔瑞利谭青峰
Owner PETROCHINA CO LTD
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