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Preparation method of hydrogenation treatment catalyst

A hydrogenation treatment and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as unsatisfactory mechanical strength of catalysts

Active Publication Date: 2016-05-18
SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the shaped support has not been roasted, the mechanical strength of the catalyst is not ideal

Method used

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  • Preparation method of hydrogenation treatment catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh the pore volume as 0.9ml / g and the specific surface area as 220m 2 Put 100 grams of γ-phase cylindrical strip-shaped alumina carrier in a beaker, add 120ml of urea aqueous solution with a concentration of 25g / 100ml into the beaker and soak for 2 hours, filter off the excess solution, and dry the carrier at 110°C for 5 hours. Put the dried carrier into the spray rolling pot, and in the rotating state, spray and impregnate 25ml of xylitol aqueous solution with a mass concentration of 40% to the carrier in the rolling pot in a rotating state; then use a mass concentration of 20% Continue to spray and impregnate the alumina carrier with 40ml of xylitol aqueous solution; finally, continue to spray and impregnate the alumina carrier with 40ml of xylitol aqueous solution with a mass concentration of 10%. The excess solution was filtered off, the wet material was transferred into an autoclave and sealed at 120°C for 8 hours, and the treated material was dried at 120°C for...

Embodiment 2

[0033] Same as Example 1, except that the alumina carrier is a clover strip, and the concentration of urea is 30g / 100ml. When spraying and impregnating for the first time, use 30ml of an aqueous solution of sorbitol with a mass concentration of 30%. 50ml of an aqueous solution of 10% mass concentration of sorbitol, and 20ml of an aqueous solution of 5% mass concentration of sorbitol for the third spray dipping. During the first hydrothermal treatment, the temperature of the hydrothermal treatment was 130° C., and the treatment time was 10 hours. During the second hydrothermal treatment, the temperature of the hydrothermal treatment was 220° C., and the treatment time was 6 hours. MoO in active metal impregnation solution 3 The concentration is 12g / 100ml (the source of molybdenum is from ammonium molybdate), and the concentration of NiO is 1.8g / 100ml (the source of nickel is from nickel chloride). Catalyst C2 of the present invention is prepared. The properties of the catalyst ...

Embodiment 3

[0035] Same as Example 1, except that the concentration of urea is 20g / 100ml, four times of spray impregnation, 20ml mass concentration of 50% mannitol aqueous solution is used during the first spray impregnation, and 40ml of mannitol is used during the second spray impregnation. Aqueous solution of sorbitol with a mass concentration of 30%, use 20ml of an aqueous solution of sorbitol with a mass concentration of 20% for the third spray and immersion, and use 20ml of an aqueous solution of sorbitol with a mass concentration of 10% for the fourth spray and immersion . During the first hydrothermal treatment, the temperature of the hydrothermal treatment was 110° C., and the treatment time was 12 hours. During the second hydrothermal treatment, the temperature of the hydrothermal treatment was 200° C., and the treatment time was 10 hours. MoO in active metal impregnation solution 3 The concentration is 8g / 100ml (the source of molybdenum is from ammonium molybdate), the concentr...

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Abstract

The invention discloses a preparation method of a hydrogenation treatment catalyst. The preparation method includes the following steps: 1) impregnation an alumina carrier in an urea water solution, and drying the impregnated alumina carrier; 2) preparing polyol and / or monosaccharide water solutions in at least two different concentrations, and spray-impregnating the alumina carrier with the water solutions according to the sequence of high concentration to low concentration to form a low-to-high gradient distribution of concentrations of the polyol and / or monosaccharide from exterior to interior of the carrier, and performing hydrothermal treatment to the material; 3) drying the alumina carrier in the step 2), and impregnating the alumina carrier in an impregnating liquid containing active components, and performing hydrothermal treatment to the impregnated alumina carrier; and 4) drying the material in the step 3) and performing oxygen-free high-temperature treatment to prepare the catalyst. The content of carbon in the catalyst is distributed in a gradient manner, so that active components are easy to sulfurize completely. The active metal components are uniformly distributed on the surface of the carrier, so that the catalyst is significantly improved in demetalization activity.

Description

technical field [0001] The invention relates to a preparation method of a catalyst. Background technique [0002] At present, the most common hydrogenation catalysts are generally supported catalysts with alumina, silica, etc. as the carrier, and Co, Ni, Mo, W and other metals as active components. The active components are loaded on the carrier by impregnation or kneading, and then dried and calcined to obtain the catalyst. When the impregnated wet agent dries, the active components in the impregnating liquid will easily form larger active species particles in the pores of the carrier as the solvent gradually evaporates, causing some pores in the carrier to be blocked, while the solvent evaporates during the evaporation process. The migration of active components will also make the distribution of active components uneven, which will eventually affect the activity of the catalyst. In addition, during the calcination process, the active metal component is easy to interact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J35/10C10G45/08
Inventor 王少军季洪海凌凤香沈智奇杨卫亚王丽华郭长友
Owner SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM
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