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Heavy oil hydrogenation catalyst and preparation method thereof

A heavy oil hydrogenation and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, etc., can solve the problem of catalyst fragmentation and deactivation, and unfavorable mass transfer of macromolecules , Poor spatial coherence and other issues, to achieve the effect of increasing the density, improving the mechanical strength and maintaining the integrity

Active Publication Date: 2018-11-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is based on the content of polyethylene glycol to control the formation and pore size of macropores. Although macropores of 50-10000nm can be obtained, it has the following disadvantages: (1) It is easier to generate macropores larger than 1 μm, However, it is difficult to control the macropores smaller than 1 μm, and the macropores obtained in the actual preparation of the examples are all macropores above 1 μm; (2) The obtained macropores are apparently isolated and have poor spatial continuity, which is not conducive to the transmission of macromolecules. quality
If the macropore diameter in the catalyst is too large and the content is too large, the overall porosity of the carrier material will decrease, and the mechanical strength will also seriously decrease. If such a material is used as the carrier of the heavy oil processing catalyst, the catalyst will lose Facing serious consequences of fragmentation and inactivation

Method used

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  • Heavy oil hydrogenation catalyst and preparation method thereof
  • Heavy oil hydrogenation catalyst and preparation method thereof
  • Heavy oil hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] At room temperature (20°C), mix water, absolute ethanol, aluminum chloride, polyethylene glycol, and formamide evenly, and then add pyridine. The contents of each component of the mixture are by weight: water 23%, ethanol 22% , aluminum chloride 20%, polyethylene glycol (viscosity average molecular weight 1 million) 0.3%, formamide 1%, pyridine 33.7%. After mixing evenly, the obtained gel is aged at 45°C for 48 hours, and then soaked in a mixture of ethanol and water for 48 hours. After soaking and removing the liquid phase, dry it at 40°C until the product no longer occurs. Visible weight loss. Then it was calcined at 550°C for 7 hours, and then cooled to room temperature to obtain the macroporous alumina. The total porosity is 81%, and the pores have a double pore distribution. Among them, the macropores are evenly distributed, the average pore size of the macropores is 400nm, and the macropore porosity accounts for 60%; the mesopore diameter is 4~6nm, and the mesopo...

Embodiment 2

[0042] At room temperature (20°C), mix water, absolute ethanol, aluminum chloride, polyethylene glycol, and formamide evenly, and then add pyridine. The contents of each component of the mixture are by weight: water 31%, ethanol 29% , aluminum chloride 16%, polyethylene glycol (viscosity average molecular weight 2 million) 0.5%, formamide 3.5%, pyridine 20%. After mixing evenly, the obtained gel was aged at 60°C for 24 hours, and then soaked in ethanol for 48 hours. After soaking and removing the liquid phase, it was dried at 50°C until the product no longer lost weight. Then bake at 650° C. for 5 hours, and then cool to room temperature to obtain the macroporous alumina of the present invention. The total porosity is 75%, and the pores have a double pore distribution. Among them, the macropores are evenly distributed. The average pore size of the macropores is 207nm, and the macropore porosity accounts for 43%. The mesopore diameter is 9~12nm, and the mesopore porosity accoun...

Embodiment 3

[0046] At room temperature (20°C), mix water, absolute ethanol, aluminum sulfate, polyethylene glycol, and N,N-dimethylformamide evenly, and then add pyridine. The contents of each component of the mixture are, by weight, water 48%, ethanol 38%, aluminum chloride 10%, polyethylene glycol (viscosity average molecular weight 300,000) 0.78%, N,N-dimethylformamide 3.22%, pyridine 10%. After mixing evenly, the obtained gel product is aged at 80°C for 24 hours, and then soaked in ethanol for 48 hours. After soaking and removing the liquid phase, dry it at 50°C until the product no longer loses weight . Then calcined at 850°C for 5 hours, and then cooled to room temperature to obtain macroporous alumina. The total porosity is 67%, and the pores have a double pore distribution. Among them, the macropores are evenly distributed. The average pore size of the macropores is 709nm, and the macropore porosity accounts for 43%. The mesopore diameter is 14~20nm, and the mesopore porosity acc...

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Abstract

The invention discloses a heavy oil hydrogenation catalyst and a preparation method thereof. The heavy oil hydrogenation catalyst is carried on macroporous aluminum oxide with double pore distribution. The macroporous aluminum oxide is high porosity, the porosity ratio of holes of 5-20 nm is 15-55%, and that of large holes of 100-1000 nm is 40-75%; the large holes of the macroporous aluminum oxideare uniformly distributed and three-dimensionally communicated. The preparation method of the heavy oil hydrogenation catalyst comprises, after the macroporous aluminum oxide is shaped, carrying hydrogenation active components onto the macroporous aluminum oxide to obtain the heavy oil hydrogen catalyst. The heavy oil hydrogenation catalyst is good in application effects in the fields of hydrogenation of hydrocarbon, heavy oil and residual oil.

Description

technical field [0001] The invention relates to a heavy oil hydrogenation catalyst and a preparation method thereof, in particular to a hydrogenation catalyst with double-pore distribution macroporous alumina as a carrier and a preparation method thereof. Background technique [0002] Activated alumina, as a good hydrogenation catalyst support material, has been widely used in the oil refining industry. At present, with the increasingly heavy and inferior quality of crude oil, refineries are facing a large number of problems in the processing and utilization of heavy and residual oil. Heavy and residual oil molecules have a complex three-dimensional structure, and the side chains of sulfur-containing condensed aromatic hydrocarbons often form steric hindrance, which prevents the sulfur atoms in the five- and six-membered rings from being adsorbed by the active center of the catalyst. During the catalytic hydrogenation process, heavy oil macromolecules are adsorbed and depos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J35/10
CPCB01J23/002B01J23/883B01J2523/00B01J35/638B01J35/635B01J35/633B01J35/615B01J2523/31B01J2523/68B01J2523/847
Inventor 杨卫亚凌凤香沈智奇郭长友季洪海王丽华王少军张会成
Owner CHINA PETROLEUM & CHEM CORP
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