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

A low-quality heavy oil, hydrogenation treatment technology, applied in the direction of hydrogenation treatment process, physical / chemical process catalyst, catalyst protection, etc., can solve the problem of large pore volume ratio, low demetallization rate of hydrogenation protection catalyst, hydrogenation protection catalyst mechanical Reduced strength and other issues, to achieve the effect of increased utilization, improved combined economy, and increased yield

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

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preparation example Construction

[0055] In some embodiments, the preparation method of the carrier includes: firstly mixing alumina, naphthalene and fullerene solution, adding an extrusion aid, extruding into a strip, and then drying and calcining.

[0056] Further, the preparation method includes: first mixing aluminum oxide and naphthalene.

[0057] Further, the mass ratio of aluminum oxide to naphthalene is 3-5:1.

[0058] Further, the amount of the fullerene is 0.1-0.6 wt%, preferably 0.2-0.5 wt%, of the total mass of the carrier.

[0059] Further, the fullerene solution is made of fullerene through CS 2 dissolved to form.

[0060] In the catalyst of the present invention, before the fullerene in the carrier is mixed with alumina, it is subjected to CS 2 dissolved, the CS 2 The dissolution temperature used for dissolution is 20-40°C, the pressure is 0.10-0.25MPa, and the dissolution time is 3-10min; the CS 2 Dissolved CS 2 The mass ratio to fullerene is 100-200:1.

[0061] Further, the fullerene is...

Embodiment 1

[0095] Example 1 Preparation of hydrogenation protection catalyst C1

[0096] (1) Preparation of catalyst carrier:

[0097] 0.30 g of fullerene C60 powder with a purity of 99.9%, under pressure 0.25 MPa, 30 ° C with 40 g CS 2 Dissolve for 6 min to obtain a fullerene solution; take 100 g of commercially available macroporous alumina powder with a pore volume of 1.1-1.6 ml / g, add 20 g of naphthalene and mix, then add it to the fullerene solution, stir and mix thoroughly, and add auxiliary The extruding agent, such as citric acid, is used in an amount to satisfy the carrier molding, and then kneading, rolling, and extruding into a strip; drying the extruded strip carrier at room temperature, and then using a heating rate of 5°C / h to set it. Bake in an oven at 70° C. for 4 hours, and break it into about 3-5 mm for later use; put the dried strips in a muffle furnace and bake at 600° C. for 6 hours to obtain a carrier.

[0098] (2) Preparation of catalyst:

[0099] Take the molyb...

Embodiment 2

[0100] The preparation of embodiment 2 hydrogenation protection catalyst C2

[0101] (1) Preparation of catalyst carrier:

[0102] 0.50 g of fullerene C60 powder with a purity of 99.5%, 50 g CS under pressure of 0.10 MPa and 20 °C 2 Dissolve for 10min to obtain a fullerene solution; take 90g of commercially available macroporous alumina powder with a pore volume of 1.1-1.6ml / g, add 30g of naphthalene and mix, add it to the fullerene solution, stir and mix thoroughly, and add auxiliary The extruding agent, such as citric acid, is used in an amount to satisfy the molding of the carrier, and then kneading, rolling, and extruding into a strip shape; drying the extruded strip carrier at room temperature, and then using a heating rate of 8°C / h to set it. Bake in an oven at 60° C. for 2 hours, and break it into about 3 to 5 mm for later use; put the dried strips in a muffle furnace and bake at 450° C. for 15 hours to obtain a carrier.

[0103] (2) Preparation of catalyst:

[0104]...

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Abstract

The invention discloses a hydrotreatment method of inferior heavy oil, a hydrogenation protection catalyst and application. The hydrotreatment method comprises the following steps: carrying out fractionation treatment on inferior heavy oil to obtain a heavy fraction and a light fraction, uniformly mixing the heavy fraction and naphthalene rear fractions in the light fraction, and carrying out solvent extraction on the obtained mixture to obtain an aromatic-rich component and a colloid component; and making the aromatic-rich component and the hydrogenation tail oil contact with a hydrogenationprotection catalyst, and carrying out a hydrogenation protection reaction, a hydrofining reaction and a hydrocracking reaction to realize hydrotreatment of inferior heavy oil, wherein the hydrogenation protection catalyst comprises a metal active component and a carrier, wherein the carrier is mainly formed by mixing fullerene, naphthalene and aluminum oxide, carrying out extrusion molding, dryingand roasting. 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): C10G67/00B01J23/882B01J23/883B01J23/888B01J33/00B01J35/10
CPCC10G67/00B01J35/1019B01J35/1061B01J35/108B01J23/883B01J33/00B01J23/882B01J23/888
Inventor 许杰尹宏峰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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