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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 pentasulfide reacts with the neutral aqueous solution of molybdenum in the presence of acidic cation exchange resin to prepare sulfur-containing oil Soluble catalyst; but the preparation process is complex and cumbersome, not easy to operate

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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
CPCC10G45/08C10G45/16B01J31/34B01J31/403C10G2300/4006C10G2300/4018C10G2300/4012C10G2300/202B01J35/27
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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