Recycling method of oil-soluble molybdenum-based slurry reactor hydrocracking catalyst

A hydrocracking and catalyst technology, applied in the directions of organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. The effect of efficient recovery, simple process and excellent hydrogenation activity

Active Publication Date: 2017-12-19
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
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Problems solved by technology

[0006] Chinese patent CN201410208927.4 discloses a preparation method of a sulfur-containing organic molybdenum precursor: the sulfur-containing organic matter generated by the reaction of polycarbonate alcohol and phosphorus pentasul

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  • Recycling method of oil-soluble molybdenum-based slurry reactor hydrocracking catalyst

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Embodiment 1

[0042] The invention provides a method for recycling a molybdenum-based hydrocracking catalyst, comprising the following steps:

[0043] S101: Calcining the waste molybdenum-based slurry-bed hydrocracking catalyst at 500° C. for 2 hours. Under the condition of stirring, dissolve the solid powder obtained by roasting in ammonia water, ammonia water / solid powder = 3mL: 1g, the dissolution temperature is 40°C, and the dissolution time is 2h, to obtain the solution R1 and the ammonia insoluble matter, which are separated by filtration to obtain the solution R1.

[0044] S102: Add ammonium sulfide solution with a sulfur content of 8% to the solution R1, the molar ratio of the sulfur content of the vulcanizing agent / molybdenum content in the catalyst = 5:1, the reaction temperature is 80°C, and the reaction is stirred for 2 hours; The liquid of the product was suction-filtered with a Buchner funnel, washed with distilled water, and dried at room temperature for 12 hours to obtain a ...

Embodiment 2

[0049] The invention provides a method for recycling a molybdenum-based hydrocracking catalyst, comprising the following steps:

[0050] S101: Calcining the waste molybdenum-based slurry-bed hydrocracking catalyst at 500° C. for 2 hours. Under stirring conditions, dissolve the roasted solid powder in ammonia water, ammonia water / solid powder = 3mL: 1g, dissolve at 60°C, and dissolve for 2 hours to obtain a solution R2 and ammonia-insoluble matter, which are separated by filtration to obtain a solution R2.

[0051] S102: Add an ammonium sulfide solution with a sulfur content of 8% to the solution R2, the molar ratio of the sulfur content of the vulcanizing agent / molybdenum content in the catalyst=5.5:1, the reaction temperature is 80°C, and the reaction is stirred for 2 hours; The liquid of the product was suction-filtered with a Buchner funnel, washed with distilled water, and dried at room temperature for 12 hours to obtain a metal sulfide salt.

[0052] S103: adding metal s...

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Abstract

The invention relates to the technical field of petrochemical industry, in particular to a recycling method of an oil-soluble molybdenum-based slurry reactor hydrocracking catalyst. The method comprises the following steps of S101, performing oxidizing roasting on the abandoned molybdenum-based slurry reactor hydrocracking catalyst, dissolving a product after the oxidizing roasting with ammonia water, performing filtering, and collecting a first liquid phase, S102, adding a valcanizer to the first liquid phase obtained in S101, performing a reaction, and performing crystallization, filtering and water washing to obtain vulcanized metal salt, S103, reacting the vulcanized metal salt with organic acid, and S104, dissolving a product obtained in S103 in a dispersion aid, performing filtering, and collecting a second liquid phase to obtain an oil-soluble molybdenum-based catalyst precursor. The method can be used for high-efficiency recycling of metal molybdenum, and has the advantages of simple technology, mild condition, high metal molybdenum recovery rate, low-cost industrial application facilitation and the like.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a method for recycling an oil-soluble molybdenum-based slurry bed hydrocracking catalyst. 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 number of domestic and imported inferior heavy oils; at the same time, with increasingly stringent environmental protection index requirements, it is imperative to control the quality of gasoline and diesel to meet the needs of producing clean fuels. [0003] As we all know, slurry bed hydrocracking technology can process low-quality heavy oil raw materials with high metal, high carbon residue and high sulfur content, and has the advantages of high conversion rate and high yield o...

Claims

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Application Information

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IPC IPC(8): B01J31/40B01J31/34C10G45/08C10G45/16
CPCB01J31/34B01J31/403B01J35/12C10G45/08C10G45/16C10G2300/202C10G2300/4006C10G2300/4012C10G2300/4018
Inventor 刘宾柴永明刘晨光赵柯迪梁缘柳云骐殷长龙
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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