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Preparation method of alumina carrier

A technology of alumina carrier and acidic aluminum salt, applied in the direction of alumina/aluminum hydroxide, refining to remove heteroatoms, etc., to achieve large pore size, improve hydrogenation reaction activity, and good pore expansion effect

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process of the method is simple and easy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0034] 1L sodium metaaluminate aqueous solution (A1 2 o 3 Concentration is 20g / 100ml ) and 1.5L aluminum sulfate aqueous solution (A1 2 o 3 The concentration is 5g / 100ml ) into the container at the high position, and the flowmeter connected to the bottom flows into 200mL clean water (which contains 5 grams of gemini surfactant: 1,3-didodecyl-N,N-di Ammonium bromide-2-propanol) in a stainless steel reactor with a stirrer and a heating jacket, an aqueous solution of sodium metaaluminate and an aqueous solution of aluminum sulfate flow into the reactor in parallel for gelation reaction, the system temperature is 85°C, pH The value is controlled at 9.5. The reaction was stopped after 45 minutes. Aged for 2.0 hours at a temperature of 85°C and a pH of 9.0. Filter and wash. Dry at 130°C for 4 hours, shape, then dry at 130°C for 4 hours, and then bake at 780°C for 6 hours to obtain sample 2.

Embodiment 3

[0036] 1.5L sodium metaaluminate aqueous solution (A1 2 o 3 Concentration is 20g / 100ml), 2.0L aluminum sulfate aqueous solution (A1 2 o 3 The concentration is 5g / 100ml) and 200mL of clean water (which contains 4 grams of acetylenic diol gemini surfactant Cido-420), which are respectively placed in a high-position container, and the flowmeter connected to the bottom flows into a stainless steel reactor with a stirrer and a heating jacket. In the reactor, sodium metaaluminate aqueous solution, aluminum sulfate aqueous solution and gemini surfactant solution flow into the reactor in parallel for gelation reaction. The system temperature is 75°C and the pH value is controlled at 10.0. The reaction was stopped after 45 minutes. Aged for 2.0 hours at a temperature of 75°C and a pH of 10.0. Filter and wash. Dry at 120°C for 5 hours, shape, then dry at 120°C for 5 hours, and bake at 700°C for 8.0 hours to obtain sample 3.

Embodiment 4

[0038] 1.5L sodium metaaluminate aqueous solution (A1 2 o 3 Concentration is 20g / 100ml), 2.0L aluminum sulfate aqueous solution (A1 2 o 3 Concentration is 5g / 100ml) and 200mL clean water (which contains 6 grams of 1,3-ditetradecyl-N,N-dimethylbromide-2-propanol gemini surfactant), respectively loaded into the high In the container at the place, the lower flowmeter flows into the stainless steel reactor with agitator and heating jacket, and the aqueous solution of sodium metaaluminate, aluminum sulfate and gemini surfactant flow into the reactor in parallel for gelation reaction. The system temperature 85°C, pH value is controlled at 10.5. The reaction was stopped after 45 minutes. Aged for 2.0 hours at a temperature of 85°C and a pH of 10.5. Filter and wash. It was dried at 110°C for 5 hours, shaped, then dried at 110°C for 5 hours, and then calcined at 750°C for 7.0 hours to obtain sample 4.

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Abstract

The invention discloses a preparation method of an alumina carrier. The method comprises the following steps: using an acidic aluminum salt solution and an alkaline aluminate solution to carry out a glue-forming process through a parallel flow method, adding a gemini surfactant before the glue-forming process or during the glue-forming process, and after the glue-forming process, subjecting the glue to the processes of aging, filtering, washing, drying, forming, drying, and burning so as to obtain the alumina carrier. The gemini surfactant has the same advantages as those of negative ion surfactants and positive ion surfactants, thus the gemini surfactant is used to replace the negative ion surfactants and positive ion surfactants so as not to bring in new impurity ions; furthermore, the gemini surfactant has a large molecular weight and thus has a good pore-enlarging effect; and finally alumina particles, which have the advantages of large pore diameter, large pore volume, and high strength, are obtained. The alumina carrier can be used as a carrier of a hydro-treatment catalyst, and is especially suitable for being taken as a carrier of a residual oil hydro-treatment catalyst.

Description

technical field [0001] The invention relates to a method for preparing an alumina carrier, in particular to a method for preparing a macroporous alumina carrier for hydrogenation of heavy and residual oil, especially a method for preparing an alumina carrier for hydrogenation demetallization or hydrogenation protecting agent . Background technique [0002] With the increasingly heavy and inferior crude oil and the increasing market demand for light oil products, environmental protection regulations are becoming increasingly stringent, and the technology of residuum lightening has become one of the important issues in the world's petroleum processing industry today. Since residual oil contains a large amount of colloids and asphaltenes and other macromolecular compounds, it is required that the residual oil hydrogenation catalyst must have larger pores to ensure that these macromolecular compounds enter the catalyst to participate in the reaction. The preparation of large-di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02C10G45/04
Inventor 张艳侠高鹏付秋红段日袁胜华包洪洲隋宝宽
Owner CHINA PETROLEUM & CHEM CORP
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