Self-vulcanization oil-soluble molybdenum based bimetallic catalyst and preparation method and applications thereof

A bimetallic catalyst and vulcanized oil technology, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, and hydrocarbon oil treatment, can solve the problems of reduced catalytic hydrogenation activity, large sulfide particle size, and difficult vulcanization, etc., to achieve Effects of suppressing coke formation, simple process, and excellent hydrogenation activity

Active Publication Date: 2018-11-06
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty of sulfidation in this process, the final sulfide particle size is relatively large, which reduces the activity of catalytic hydrogenation, resulting in a large amount of addition and increasing the cost of operation.

Method used

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  • Self-vulcanization oil-soluble molybdenum based bimetallic catalyst and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 30g of ammonium heptamolybdate, add 100mL of distilled water, and then add 30mL of concentrated ammonia water to obtain solution A. Weigh 49.3g of nickel nitrate hexahydrate, add ammonia water, ammonia water / nickel molar ratio=10 / 1, and obtain solution B. Under the condition of stirring, solution B was added into solution A, the reaction temperature was 60° C., and the reaction time was 4 hours, and a green precipitate was formed. The precipitate was filtered, washed with water, and dried at room temperature to obtain ammonium nickel molybdate. Then, nickel ammonium molybdate was added to the ammonium sulfide solution with a sulfur content of 8%, the sulfur content of the vulcanizing agent / molybdenum molar ratio=6 / 1, the temperature was raised to 80° C., and the reaction was stirred for 4 hours. The liquid containing the precipitate was suction-filtered with a Buchner funnel, washed with distilled water, and left to dry at room temperature for 12 hours to obtain ...

Embodiment 2

[0024] Weigh 30g of ammonium heptamolybdate, add 100mL of distilled water, and then add 30mL of concentrated ammonia water to obtain solution A. Weigh 49.4g of cobalt nitrate hexahydrate, add ammonia water, ammonia water / cobalt molar ratio=10 / 1, and obtain solution B. Under the condition of stirring, solution B was added into solution A, the reaction temperature was 60° C., and the reaction time was 4 hours, and a precipitate was formed. The precipitate was filtered, washed with water, and dried at room temperature to obtain ammonium cobalt molybdate. Then add cobalt ammonium molybdate to the ammonium sulfide solution with a sulfur content of 8%, the sulfur content of the vulcanizing agent / molybdenum molar ratio=6 / 1, heat up to 80°C, and stir for 4 hours. The liquid containing the precipitate was suction-filtered with a Buchner funnel, washed with distilled water, and dried at room temperature for 12 hours to obtain cobalt ammonium tetrathiomolybdate, cobalt / molybdenum molar ...

Embodiment 3

[0028] Weigh 30g of ammonium heptamolybdate, add 100mL of distilled water, and then add 30mL of concentrated ammonia water to obtain solution A. Weigh 41g of copper nitrate trihydrate, add ammonia water, ammonia water / copper molar ratio=10 / 1, and obtain solution B. Under the condition of stirring, solution B was added into solution A, the reaction temperature was 60° C., and the reaction time was 4 hours, and a precipitate was formed. The precipitate was filtered, washed with water, and dried at room temperature to obtain copper ammonium molybdate. Then copper ammonium molybdate is added to the ammonium sulfide solution with a sulfur content of 8%, the sulfur content of the vulcanizing agent / molybdenum molar ratio=6 / 1, the temperature is raised to 80° C., and the reaction is stirred for 4 hours. The liquid containing the precipitate was suction-filtered with a Buchner funnel, washed with distilled water, and left to dry at room temperature for 12 hours to obtain ammonium copp...

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Abstract

The invention relates to the field of hydrogen cracking of heavy oil, and specifically relates to a self-vulcanization oil-soluble molybdenum based bimetallic catalyst and a preparation method and applications thereof. The preparation method comprises following steps: mixing a molybdenum source compound with a second metal salt to generate a molybdenum based bimetallic compound through a chemicalprecipitation method; processing the molybdenum based bimetallic compound by a vulcanizing agent to obtain bimetallic sulfo-molybdate; reacting organic amines with bimetallic sulfo-molybdate to prepare an oil-soluble molybdenum based bimetallic catalyst precursor; and adding a dispersant into the precursor to obtain the self-vulcanization oil-soluble molybdenum based bimetallic catalyst. The prepared catalyst has an excellent hydrogenation activity and a good coke inhibiting performance; furthermore, the preparation technology is simple, the addition amount of catalyst is little, the application is convenient, and the catalyst is suitable for a low cost slurry reactor hydrogen cracking technology, which uses inferior heavy oil rich in metals, coal residues, sulfur, and solids, and has a potential market value.

Description

technical field [0001] The invention relates to the field of heavy oil hydrocracking, in particular to a self-sulfurized oil-soluble molybdenum-based bimetallic catalyst and its preparation method and application. Background technique [0002] At present, with the decrease of conventional oil resources and the maturity of heavy oil extraction technology, the production of crude oil presents a trend of heavy and inferior quality. Refining and chemical enterprises are faced with the problem of lightening a large amount of domestically produced and imported inferior heavy oil. At the same time, we must take into account the requirements of environmental protection indicators, control the quality of gasoline and diesel, and meet the needs of producing clean fuels. Slurry bed hydrocracking technology can process low-quality heavy oil raw materials with high metals, high carbon residues, and high sulfur, and has high conversion rate and high yield of light oil. It is an excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051C10G45/08
CPCB01J27/051B01J27/0515C10G45/08C10G2300/202
Inventor 刘宾赵德明柴永明牟庆平刘晨光郭振莲赵柯迪李新梁缘
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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