Hydrogenation catalyst carrier the concentrations of acid additives of which are distributed in gradient reducing and preparation method thereof,

A technology of hydrogenation catalyst and acid auxiliary agent is applied in the directions of catalyst carrier, catalyst activation/preparation, chemical instrument and method, etc., to achieve the effects of simple operation, broad application prospect and simple preparation process

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

At present, there are few reports on the preparation method of the hydrogenation catalyst carrier with the concentration of acidic additives inhomogeneously distributed.

Method used

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  • Hydrogenation catalyst carrier the concentrations of acid additives of which are distributed in gradient reducing and preparation method thereof,
  • Hydrogenation catalyst carrier the concentrations of acid additives of which are distributed in gradient reducing and preparation method thereof,
  • Hydrogenation catalyst carrier the concentrations of acid additives of which are distributed in gradient reducing and preparation method thereof,

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, Al 2 o 3 As a carrier, the water absorption rate is 1.10mL / g, and the catalyst carrier with a gradient distribution of the acidic additive concentration is prepared by a saturated spray immersion method.

[0025] Weigh 150g carrier, spray and dip 82.5mL aqueous solution containing 10.0g 85% phosphoric acid (Beijing Chemical Reagent Company, the same below), drop 82.5mL deionized water into the dipping solution at a constant speed during the spray dipping process, and spray while dripping Soak, spray and soak for 5 minutes. After being homogenized for 10 minutes in a spray-dipping device, it was dried at 60°C for 2 hours, then dried at 120°C for 5 hours, and then calcined at 500°C for 3 hours in air to obtain a catalyst carrier. Numbered C-1.

Embodiment 2

[0027] This example uses 1.5m% SiO 2 Al 2 o 3 As a carrier, the water absorption rate is 1.10mL / g, and a catalyst carrier with a gradient distribution of acidic additives is prepared by a saturated spray immersion method.

[0028] Weigh 150g carrier, spray immerse in 60mL aqueous solution containing 4g 50% ammonium fluoride, after spray immersion, spray immerse in 105mL aqueous solution containing 2.0g 50% ammonium fluoride (Beijing Chemical Reagent Company, the same below), spray immerse in 15 minutes Finish. After being homogenized for 10 minutes in a spray-dipping device, it was dried at 120° C. for 4 hours, and then calcined in air at 500° C. for 3 hours to obtain a catalyst carrier. Numbered C-2.

Embodiment 3

[0030] 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 a catalyst carrier with a gradient distribution of acidic additives is prepared by a saturated spray immersion method.

[0031] Weigh 150g carrier, spray 50mL aqueous solution containing 25.0g 85% boric acid (Beijing Chemical Reagent Company, the same below), drop 115mL deionized water at a constant speed during the spray immersion process, and stir in the immersion solution, while dripping Spray and soak while entering, and soak in 5 minutes. After being homogenized for 10 minutes in the spray-dipping equipment, it was dried at 60°C for 2 hours, taken out and dried at 120°C for 5 hours, and then calcined in air at 500°C for 3 hours to obtain a catalyst carrier. Numbered C-3.

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Abstract

The invention relates to a hydrogenation catalyst carrier the concentrations of acid additives of which are distributed in gradient reducing, and a preparation method thereof; the preparation method comprises the following steps: adopting Al2O3 or Al2O3 containing SiO2, TiO2 and ZrO2 as a carrier, preparing a solution of higher concentration of the acid additives, and saturating and spraying the carrier by gradually adding deionized water to dilute the solution in the process of soaking the carrier; or preparing at least two kinds of solutions of different concentrations of the acid additives, and then spraying the solutions on the carrier in a descending order of the concentration of the acid additives; then drying for 1-8 hours at 80-150DEG C, and then roasting for 2-6 hours in air at 300-650DEG C; the acid additives are compounds containing P, B or F; and the preparation is simple, the manufacturing cost is low, the carrier is used as a carrier for a heavy-oil hydrogenation catalyst, the preparation method is simple, the manufacturing cost is low, the acidity and pore properties of the carrier can be effectively modified, and the acidity of the catalyst can be effectively modified and / or the interaction between active components and the carrier is improved.

Description

technical field [0001] The invention relates to a hydrogenation catalyst carrier whose concentration of an acidic additive is distributed in a gradient decreasing manner and a preparation method thereof. Background technique [0002] As crude oil becomes heavier and inferior worldwide, and environmental 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. Heavy oil hydrogenation technology is the main processing The methods are facing great challenges, and there is an urgent need to develop better heavy oil hydrogenation processes and heavy oil hydrogenation catalysts with higher activity and stability. Catalyst supports can adjust the acidity of catalysts and / or improve the interaction between active components and supports, so the development of support materials is particularly critical. [0003] Almost all hydrotreat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J27/14B01J27/06B01J21/04B01J21/06B01J21/02B01J37/02B01J37/08C10G45/04
Inventor 赵愉生赵元生崔瑞利谭青峰张上程涛
Owner PETROCHINA CO LTD
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