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Hydrodemetallization catalyst with high activity and preparation method thereof

A hydrodemetallization and active metal technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of unsatisfactory mechanical strength of catalysts

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +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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  • Hydrodemetallization catalyst with high activity and preparation method thereof
  • Hydrodemetallization catalyst with high activity and preparation method thereof
  • Hydrodemetallization catalyst with high activity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh the pore volume as 0.9ml / g and the specific surface area as 220m 2 100 grams of gamma-phase cylindrical strip-shaped alumina carrier / g is put into the spray rolling pot, and in the rotating state, spray and impregnate 25 ml of xylitol aqueous solution with a mass concentration of 40% to the carrier in the rolling pot in the form of atomization ; Then continue to spray and impregnate the alumina carrier with 40ml of xylitol aqueous solution with a mass concentration of 20%; finally continue to spray and impregnate the alumina carrier with 40ml of xylitol aqueous solution with a mass concentration of 10%. After impregnation, transfer the alumina carrier into the autoclave and place the autoclave in an oven at 80°C for heat treatment for 120 minutes, then raise the temperature to 180°C, carbonize for 9 hours under autogenous pressure, and cool down to room temperature naturally. The alumina carrier after hydrothermal treatment was dried at 120° C. for 3 hours. After...

Embodiment 2

[0036] With embodiment 1, just use the aqueous solution of 30% sorbitol with 30ml mass concentration when spraying and impregnating for the first time, be the aqueous solution of 10% sorbitol with 50ml mass concentration when spraying and impregnating for the second time, spray for the third time When soaking, use 20ml of sorbitol aqueous solution with a mass concentration of 5%, the heat treatment temperature is 130°C, and the heat treatment time is 60 minutes. During the carbonization treatment, the temperature was 200° C., and the carbonization time was 8 hours. Active component impregnation process with 150ml containing MoO 3 10.5 grams (molybdenum source comes from ammonium molybdate), NiO2 grams (nickel source comes from nickel nitrate) impregnation solution. The hydrodemetallization catalyst C2 of the present invention was prepared, and the properties of the catalyst are shown in Table 1.

Embodiment 3

[0038] With embodiment 1, just adopt four times of spray impregnation, use 20ml mass concentration to be the aqueous solution of mannitol of 50% during the first spray impregnation, use 40ml mass concentration to be 30% sorbitol during the second spray impregnation 20ml aqueous solution of sorbitol with a mass concentration of 20% for the third spray dipping, and 20ml aqueous solution of sorbitol with a mass concentration of 10% for the fourth spray dipping, heat treatment temperature is 100°C, heat treatment The time is 90 minutes. During the carbonization treatment, the temperature was 240° C., and the carbonization time was 12 hours. Active component impregnation process with 150ml containing MoO 3 11.5 grams (molybdenum source comes from ammonium molybdate), NiO2.5 grams (nickel source comes from basic nickel carbonate) impregnating solution. The hydrodemetallization catalyst C3 of the present invention was prepared, and the properties of the catalyst are shown in Table ...

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Abstract

The invention discloses a hydrodemetallization catalyst with high activity and a preparation method thereof. The catalyst comprises an aluminum oxide carrier, active metals and carbon. The catalyst comprises the following components based on the weight of the catalyst in percentages by weight: 6.0-15% of Mo and / or W, 1.0-4.0% of Co and / or Ni, wherein the active metals are calculated based on oxides, 1-15% of carbon, preferably 5-10% of carbon, wherein the carbon is calculated based on carbon element; carbon content is gradually reduced from the center to the external surface of a catalyst particle. The preparation method is as follows: aqueous solutions of polyol and / or monosaccharide of at least two different concentrations are prepared; the aqueous solutions are sprayed on the aluminum oxide carrier for dipping according to a sequence from a high concentration to a low concentration; hydro-thermal carbonization treatment is carried out in a sealing container, drying is carried out, active components are used for dipping, drying is carried out, anoxic high-temperature treatment is carried out, and the hydrodemetallization catalyst is carried out. The carbon content in the catalyst is distributed in gradient distribution, complete sulfuration for active components is easy, and demetalization and desulphurization activities of the catalyst are substantially improved.

Description

technical field [0001] The invention relates to a highly active hydrogenation demetallization catalyst and a preparation method thereof. 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. During the calcination process, the active metal component is easy to interact with the alumina support to form a strong M-O-Al bond, which will cause the active component to form a spinel phase and lose its activity, or prevent the active component from being completely vulcanized, thereby reducing the catalyst activity. . [0003] CN101439289A discloses a method for preparing a hydrogenation catalyst. The metal component of the catalyst is composed of one or two of Co and Ni and one or two of Mo a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883C10G45/08
Inventor 季洪海凌凤香王少军沈智奇杨卫亚王丽华郭长友
Owner CHINA PETROLEUM & CHEM CORP
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