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Processing method of inferior heavy oil, hydrogenation protection catalyst and application

A low-quality heavy oil, hydrogenation protection technology, applied in catalyst protection, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of reduced mechanical strength and large pore volume ratio of hydrogenation protection catalysts , the problem of low demetallization rate of hydrogenation protection catalysts, etc., to achieve the effect of improving comprehensive economy, strong metal holding capacity, and uniform dispersion of active components

Active Publication Date: 2021-03-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN1107102C selects the materials such as turmeric powder or carbon black as pore-enlarging agent, can make the mechanical strength of the hydrogenation protection catalyst of preparation reduce
CN101890381B is made of rod-shaped nano-oxide carrier. In the pore distribution, the large pores account for a large proportion of the pore volume, and the pores above 1000nm contain more than 36%. The demetallization rate of the hydrogenation protection catalyst is about 48% low.

Method used

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  • Processing method of inferior heavy oil, hydrogenation protection catalyst and application
  • Processing method of inferior heavy oil, hydrogenation protection catalyst and application
  • Processing method of inferior heavy oil, hydrogenation protection catalyst and application

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preparation example Construction

[0052] In some embodiments, the preparation method of the carrier includes: firstly mixing alumina with a toluene solution of fullerene, then adding an extrusion aid, then extruding into a strip, and then drying and calcining.

[0053] Further, the amount of the fullerene is 0.1-0.6 wt % of the total mass of the carrier, preferably 0.2-0.5 wt %.

[0054] Further, the fullerene is formed by dissolving fullerene in toluene.

[0055] In the catalyst of the present invention, before the fullerene in the carrier is mixed with alumina, it is first dissolved in toluene. The dissolving temperature of the toluene is 20-40°C, the pressure is 0.10-0.25MPa, and the dissolution time is 20-40°C. is 3-10 min; the mass ratio of toluene and fullerene used for the toluene dissolving is 200-350:1.

[0056] Further, the fullerene adopts C60 fullerene powder, and the purity is ≥99.5wt%.

[0057] Further, the preparation method includes: mixing and stirring toluene and alumina to form the slurry ...

Embodiment 1

[0092] Example 1 Preparation of hydrogenation protection catalyst C1

[0093] (1) Preparation of catalyst carrier:

[0094] Dissolve 0.50 g of fullerene C60 powder with a purity of 99.5% with 138 g of toluene for 6 minutes at a pressure of 0.10 MPa and 30 °C to obtain a purple fullerene solution; the pore volume is 1.1-1.6 cm 3 / g of commercially available macroporous alumina powder 99g, add 20g of toluene and make into a slurry; add the fullerene solution to the slurry alumina at a drop rate of 3g / s, stir and mix thoroughly, and drop the fullerene during the process. Add an extrusion aid, such as citric acid, in an amount that meets the shape of the carrier, and then knead, roll, and extrude into a strip shape; dry the extruded strip carrier at room temperature, and then place it in an oven at 140°C Bake for 6 hours, and break it into about 3 to 5 mm for later use; put the drying strip in a muffle furnace, and bake it at 580° C. for 8 hours to obtain a carrier.

[0095] (2)...

Embodiment 2

[0097] The preparation of embodiment 2 hydrogenation protection catalyst C2

[0098] (1) Preparation of catalyst carrier:

[0099] Dissolve 0.40 g of fullerene C60 powder with a purity of 99.9% in 140 g of toluene at a pressure of 0.25 MPa and 40 ° C for 10 min to obtain a purple fullerene solution; the pore volume is 1.1 to 1.6 cm 3 / g of commercially available macroporous alumina powder 99g, add 33g of toluene and make into a slurry; add the fullerene solution to the slurry alumina at a drop rate of 5g / s, stir and mix thoroughly, and drop the fullerene during the process. Add extrusion aids, such as citric acid, in an amount that meets the requirements of the carrier molding, and then knead, roll, and extrude into strips; dry the extruded strip carriers at room temperature, and then place them in an oven at 160°C Bake for 4 hours, and break it into about 3-5 mm for later use; put the dry strip in a muffle furnace, and bake it at 450° C. for 15 hours to obtain a carrier.

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Abstract

The invention discloses a processing method of inferior heavy oil, a hydrogenation protection catalyst and application. The processing method comprises the following steps: carrying out fractionationtreatment on inferior heavy oil to obtain a heavy fraction and a light fraction, and then carrying out solvent extraction on the heavy fraction to obtain an aromatic-rich component and a colloid component; and uniformly mixing the aromatic-rich component and the naphthalene rear fraction in the light fraction, making the obtained mixture contact with a hydrogenation protection catalyst, and carrying out a hydrogenation protection reaction, a hydrofining reaction and a hydrocracking reaction to achieve processing of inferior heavy oil, wherein the hydrogenation protection catalyst comprises a metal active component and a carrier, the carrier is mainly formed by mixing a toluene solution of fullerene and slurry alumina, carrying out extrusion molding, drying and roasting, and the metal active component comprises a metal oxide. The processing method disclosed by the invention solves the problem that a fixed bed hydrogenation process cannot be directly adopted due to high asphaltene content in the inferior heavy oil, so that the inferior heavy oil full fraction is fully utilized, and the comprehensive economy of the inferior heavy oil is improved.

Description

technical field [0001] The invention relates to a method for processing inferior heavy oil, in particular to a method for treating inferior heavy oil by using a combined process of distillation, crystallization and fixed-bed hydrogenation, and a hydrogenation protection catalyst used therefor and a preparation method and application thereof. Background technique [0002] The increasing scarcity of petroleum resources and their non-renewable nature make it necessary for refineries to reduce emissions and increase efficiency. Inferior heavy oils such as ethylene tar and catalytic oil slurry are currently mainly sold as heavy fuel oil or partially used as carbon black raw materials, with low added value. These heavy oils contain high levels of impurities such as carbon residues, asphaltenes, and metals, and cannot be directly used as the feed to the fixed-bed hydrogenation unit. These impurities need to be separated or intercepted. If these impurities cannot be effectively remo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00B01J23/888B01J33/00B01J35/10
CPCC10G67/00B01J23/888B01J33/00B01J35/615B01J35/66B01J35/647
Inventor 尹宏峰许杰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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