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Modified sulfurized hydrogenation catalyst as well as preparation method and application thereof

A hydrogenation catalyst and sulfurized technology, which is applied in the field of modified sulfurized hydrogenation catalyst and its preparation, can solve the problems of low hydrogenation catalyst activity, complicated preparation process, poor controllability, etc., and achieve excellent hydrogenation activity and reaction Stability, high dispersion of active components, and the effect of saving start-up time

Active Publication Date: 2021-10-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a modified sulfurized hydrogenation catalyst and its preparation method in order to overcome the defects of low activity of hydrogenation catalysts in the prior art, complicated preparation process, poor controllability and high cost and application, the modified sulfurized hydrogenation catalyst has excellent hydrogenation activity and reaction stability, and has a high dispersion of active components, and can ensure that the active components are fully vulcanized, and can avoid "inside" vulcanization Solve the problems existing in the process, simplify the "external" vulcanization route, and save the start-up time of the refinery

Method used

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  • Modified sulfurized hydrogenation catalyst as well as preparation method and application thereof
  • Modified sulfurized hydrogenation catalyst as well as preparation method and application thereof
  • Modified sulfurized hydrogenation catalyst as well as preparation method and application thereof

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preparation example Construction

[0051] A second aspect of the present invention provides a method for preparing a modified sulfurized hydrogenation catalyst, the method comprising the steps of:

[0052] (1) Precipitation reaction is carried out by contacting an inorganic aluminum-containing compound solution with an acid or an alkali, or a hydrolysis reaction is carried out by contacting an organic aluminum-containing compound with water to obtain phosphorus-containing hydrated alumina;

[0053] (2) Aging the phosphorus-containing alumina hydrate obtained above at a pH of 7-10.5;

[0054] (3) Roasting the solid product obtained in step (2) aging to obtain phosphorus-containing alumina;

[0055] (4) impregnating phosphorus-containing aluminum oxide with tetrathiomolybdate solution, and then performing heat treatment in an inert atmosphere or a reducing atmosphere to obtain a composite material A. The heat treatment makes Mo in the composite material A exist in the form of trisulfide;

[0056] (5) impregnatin...

specific Embodiment approach

[0060] According to a specific embodiment of the present invention, step (1) includes: contacting an inorganic aluminum-containing compound solution, a phosphorus-containing compound, an auxiliary element-containing compound, a grain growth regulator, and an acid or alkali to carry out a precipitation reaction, or, The organic aluminum-containing compound, the phosphorus-containing compound, the auxiliary element-containing compound, and the grain growth regulator are hydrolyzed with water; the pH of the precipitation reaction or the hydrolysis reaction is controlled to be 4-7.

[0061] According to a preferred embodiment of the present invention, the precipitation reaction or the hydrolysis reaction in step (1) is carried out in the presence of a grain growth regulator, a phosphorus-containing compound, and a compound containing an auxiliary element, at a pH of 4-6.5 . Making the precipitation reaction or hydrolysis reaction proceed at the above preferred pH is more conducive...

Embodiment approach

[0091] According to a preferred embodiment of the present invention, the step (3) includes: sequentially molding, drying and roasting the solid product of the step (2) to obtain the phosphorus-containing alumina.

[0092] In the present invention, the molding method described in step (3) is not particularly limited, and may be at least one of rolling ball, tablet pressing and extrusion molding, preferably extrusion molding, followed by drying and roasting; in order to ensure that the molding Carry out smoothly, can also add water, extrusion aid and / or adhesive, and optionally add pore-enlarging agent, the type and consumption of described extrusion aid, peptizing agent and pore-enlarging agent are well known to those skilled in the art, for example, Common extruding aids can be selected from at least one of squash powder, methyl cellulose, starch, polyvinyl alcohol and polyethylene glycol, and the peptizing agent can be organic acid and / or organic acid, and the pore-enlarging a...

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Abstract

The invention relates to the technical field of hydrogenation catalysts, and discloses a modified sulfuration type hydrogenation catalyst and a preparation method and an application thereof. The catalyst comprises a carrier and active metal components loaded on the carrier, the active metal components comprise Mo and at least one VIII group metal element, Mo exists in the form of trisulfide, and the group VIII metal element exists in the form of salt; the carrier is phosphorus-containing aluminum oxide, and in an IR spectrogram of the phosphorus-containing aluminum oxide, (I3670+I3580) / (I3770+I3720) is 1.9 to 3.5; wherein I3670 is the peak height at the position of 3670 cm <-1>, I3580 is the peak height at the position of 3580 cm <-1>, I3770 is the peak height at the position of 3770 cm <-1>, and I3720 is the peak height at the position of 3720 cm <-1>; the phosphorus-containing aluminum oxide contains a P element and an auxiliary element, and the auxiliary element comprises a metal auxiliary element and / or a non-metal auxiliary element. Compared with the prior art, the modified sulfuration type hydrogenation catalyst provided by the invention has excellent hydrogenation activity and reaction stability, also has very high active component dispersity, and can ensure full sulfuration of the active components.

Description

technical field [0001] The invention relates to the technical field of hydrogenation catalysts, in particular to a modified sulfurized hydrogenation catalyst and its preparation method and application. Background technique [0002] Heavy oil hydrogenation technology is gradually becoming one of the most important heavy oil processing methods in refineries, driven by the dual promotion of crude oil inferiority and product cleanliness, while fixed bed heavy oil hydrogenation technology is currently the most mature and most widely used heavy oil hydrogenation technology . Compared with light oil products, heavy oil contains a large amount of impurities such as sulfur, nitrogen, and metals, and also contains asphaltenes and other coking species, so it has higher requirements for the activity and stability of catalysts. [0003] Since the catalyst carrier plays the role of providing reactants and product diffusion paths during the catalytic reaction, and providing attachment sit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/16B01J32/00B01J27/051B01J23/883B01J23/882B01J23/887B01J35/10C10G45/08
CPCB01J27/16B01J27/0515B01J23/883B01J23/882B01J23/8872B01J23/002C10G45/08B01J2523/00C10G2300/202C10G2300/1037C10G2300/205B01J35/638B01J35/635B01J35/615B01J35/647B01J2523/22B01J2523/31B01J2523/51B01J2523/68B01J2523/847B01J2523/845B01J2523/12B01J2523/47B01J2523/41Y02P20/52
Inventor 贾燕子韩伟龙湘云杨清河赵新强刘涛
Owner CHINA PETROLEUM & CHEM CORP