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Preparation method for heavy oil hydrogenation catalyst carrier

A technology for hydrogenation catalysts and heavy oils, which is applied in the direction of catalyst carriers, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., and can solve the problem that the mechanical strength of large pore volume and pore size carriers cannot meet the requirements, etc. problem, achieve the effect of reducing production cost and increasing pore volume

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the pore volume, pore diameter and mechanical strength are often not compatible. The reason why the large pore volume and pore diameter carriers cannot be better applied is that the mechanical strength cannot meet the requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] With 50g catalyst waste material (comprising 15.2%MoO in this waste material 3 , containing 4.5% NiO, the balance being alumina) for crushing and grinding to 150 mesh. Prepare 3L aluminum sulfate solution, Al in the solution 2 o 3 The concentration is 4g / 100mL. Prepare 2L sodium metaaluminate solution, Al in the solution 2 o 3 The concentration is 15g / 100mL. Add 50 g of catalyst powder and 10 g of concentrated sulfuric acid to the aluminum sulfate solution, heat to 50° C., and keep stirring. The pH of the solution is 1.72. Aluminum sulfate solution and sodium metaaluminate solution were continuously added to a reaction tank with 6L of clean water at the same time, the gelling temperature was 70°C, and the pH value was maintained at 7.2, neutralized for 1 hour, aged for 10 minutes, filtered and washed, and heated at 140°C Dry for 3 hours. The dried material was mixed with 9 g of scallop powder, 5 g of acetic acid, and 150 ml of clean water, kneaded, shaped, dried ...

Embodiment 2

[0028] With 75g catalyst scrap (comprising 15.2%MoO in this scrap 3 , containing 4.5% NiO, the balance being alumina) for crushing and grinding to 150 mesh. Prepare 3L aluminum sulfate solution, Al in the solution 2 o 3 The concentration is 7g / 100ml. Prepare 2L sodium metaaluminate solution, Al in the solution 2 o 3 The concentration is 15g / 100ml. Add 75g of catalyst powder to the aluminum sulfate solution. At this time, the pH of the solution is 2.8. Heat it to 50°C and keep stirring. Ultrasonic treatment is performed on the aluminum sulfate solution until the solution is added. The ultrasonic frequency is 50kHz. Aluminum sulfate solution and sodium metaaluminate solution were continuously added to a reaction tank with 6L of clean water at the same time, the gelling temperature was 70°C, and the pH value was maintained at 7.2, neutralized for 1 hour, aged for 10 minutes, filtered and washed, and heated at 140°C Dry for 3 hours. The dried material was mixed with 9 g of ...

Embodiment 3

[0030] With 100g catalyst waste material (comprising 17.4%MoO in this waste material 3 , containing 3.5% NiO, the balance being alumina) for crushing and grinding to 150 mesh. Prepare 3L aluminum sulfate solution, Al in the solution 2 o 3 The concentration is 5g / 100ml. Prepare 2L sodium metaaluminate solution, Al in the solution 2 o 3 The concentration is 15g / 100ml. Add 100 g of catalyst powder and 15 g of concentrated sulfuric acid to the aluminum sulfate solution, and heat to 60° C. with continuous stirring. The pH of the solution is 1.66. Aluminum sulfate solution and sodium metaaluminate solution were continuously added to a reaction tank with 6L of clean water at the same time, the gelling temperature was 70°C, and the pH value was kept at 8.0, neutralized for 1 hour, aged for 10 minutes, filtered and washed, and heated at 140°C Dry for 3 hours. The dried material was mixed with 9 g of squat powder, 5 g of polyethylene glycol, and 200 ml of clean water, kneaded, sh...

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Abstract

The invention discloses a preparation method for a heavy oil hydrogenation catalyst carrier. The preparation method comprises the following steps: (1) preparing an acidic aluminum salt solution and an alkaline aluminum salt solution; (2) performing pulverizing grinding on production wastes of a hydrogenation catalyst taking aluminum oxide as a carrier to form a powder body, and adding the powder body into the acidic aluminum salt solution in the step (1) for uniform stirring; (3) performing parallel flow co-sol reaction on the alkaline aluminum salt solution prepared in the step (1) and the acidic aluminum salt solution added with the powder body in the step (2), and then performing aging, filtering, washing, drying and molding to obtain the final hydrogenation catalyst carrier. The heavy oil hydrogenation catalyst carrier prepared by the method has the advantages of larger pore volume, larger aperture and higher mechanical strength.

Description

technical field [0001] The invention relates to a method for preparing a catalyst carrier for hydrogenation of heavy oil, in particular to a method for preparing an alumina carrier suitable for hydrogenation conversion of heavy oil. Background technique [0002] At present, the heavy and residual oil hydrotreating catalysts used in industry generally use macroporous alumina as the carrier, and the metal elements of Group VIII and Group VIB as active components. [0003] CN1179356A discloses a catalyst carrier and its preparation method. The pore volume of the catalyst carrier is 0.65-0.88ml / g, wherein the pore volume with a pore diameter of 7.0-13.0nm accounts for 80%-98% of the total pore volume, and the pore volume with a pore diameter greater than 13.0nm accounts for 2% of the total pore volume -15%. During the kneading process of alumina dry rubber powder, a certain amount of alkaline solution is added first, and then a certain amount of acidic solution is added after ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J23/883
Inventor 刘文洁王刚隋宝宽王永林安晟吴国林
Owner CHINA PETROLEUM & CHEM CORP
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