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Alumina supporter possessing duplicate orifice, catalyst and preparation method

A technology of alumina carrier and double pores, which is applied in the direction of physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc., can solve the problems of long process, low yield, easy to overheat, etc., and achieve process simplification and yield High, eliminate the effect of flying temperature

Active Publication Date: 2006-07-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In the existing methods for preparing alumina carriers with double pores, when carbon black powder, organic additives and other pore-enlarging agents are used, it is easy to overheat during roasting, the temperature control is complicated, and the stability of product quality is poor; Molding method Molding and preparation of double-pore alumina carrier, the process is long and the yield is low

Method used

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  • Alumina supporter possessing duplicate orifice, catalyst and preparation method

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preparation example Construction

[0022] The preparation method of the catalyst provided by the invention comprises, under the conditions sufficient to deposit molybdenum and / or tungsten and nickel and / or cobalt metal components on the macroporous alumina carrier, combining the macroporous alumina carrier with molybdenum and Solution contacting of / or tungsten and nickel and / or cobalt metal compounds, for example by means of impregnation, co-precipitation, etc., preferably impregnation. Wherein, in terms of oxides, the amount of each component is such that the final catalyst contains 0.5-15% by weight of molybdenum and / or tungsten, and 0.3-8% by weight of cobalt and / or nickel.

[0023] The molybdenum-containing compound is selected from one or more of molybdenum-containing soluble compounds, such as one or more of molybdenum oxide, molybdate, paramolybdate, preferably molybdenum oxide and ammonium molybdate , Ammonium paramolybdate.

[0024] The tungsten-containing compound is selected from one or more of tung...

Embodiment 1

[0032] Take by weighing 300 grams of pseudo-boehmite powder produced by Changling Catalyst Factory, add 10 grams of asparagus powder, 120 grams of ammonium bicarbonate, add an appropriate amount of deionized water after mixing, and knead at room temperature for 15 minutes to become plastic. Extrude into a trilobal strip with a diameter of 1.1 mm on a screw extruder. The wet bar was dried in a drying oven at 120°C for 4 hours, and kept in a roasting furnace at 750°C for 2 hours to obtain carrier A.

Embodiment 2

[0034]Weigh 300 grams of pseudo-boehmite powder produced by Changling Catalyst Factory, add 10 grams of fennel powder, 12 grams of methylcellulose, and 150 grams of ammonium citrate, mix well, add appropriate amount of deionized water, and knead for 10 minutes at room temperature , into a plastic body, extruded into a φ2.5mm cylindrical strip on a screw extruder, and then rolled into a φ2.5mm ball in a spheronizer. The spherical particles were dried at 120°C for 2 hours, and fired in a calcination furnace at 750°C for 2 hours to obtain carrier B.

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Abstract

A catalyst for residual oil hydrodemetalling, which is composed of a carrier containing two types of pores and metal components such as Mo and / or W and Co and / or Ni, fixes on the carrier. The distribution of the pores in the said carrier is: the volume percentage of 10-20nm diameter pores in the total pore volume is 35-80%, the volume percentage of 500-1200nm diameter pores in the total pore volume is 15-60%, and the volume percentage of the pores with diameters ú“10nm, ú¥20-ú“500nm and ú¥1200nm in the total pore volume is 5-40%. The process for preparing the carrier comprises the steps of: mixing an alumina precursor with a nonacid nitrogenous compound, molding and sintering. The catalyst in this invention can be used as the catalyst for crude oil and normal atmosphere residual oil hydrodemetalling.

Description

technical field [0001] The invention relates to an alumina carrier, a catalyst containing the carrier and a preparation method thereof, more specifically to an alumina carrier with double pores, a catalyst containing the carrier and a preparation method thereof. Background technique [0002] The deep processing of residual oil is not only conducive to improving the utilization rate of crude oil and alleviating the tense trend of energy supply, but also reducing environmental pollution and achieving clean utilization of energy. Sulfur, nitrogen, metal and other impurities in crude oil are mostly concentrated in the residual oil, and these impurities will pollute the corresponding catalysts in the subsequent processing, so these impurities must be removed by hydrotreating first. Compared with distillate oil, residual oil contains a large number of macromolecular reactants such as asphaltenes and colloids, and their diffusion process in the catalyst wi...

Claims

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Application Information

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IPC IPC(8): C10G45/08B01J32/00
Inventor 胡大为杨清河刘滨聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP
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