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Catalyst for light hydrocarbon desulfanization based on control of alumina crystal plane and its preparation method

A light hydrocarbon, alumina technology, applied in carbon compound catalysts, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of deep desulfurization of light petroleum processing products. Problems such as environmental pollution, inability to achieve deep desulfurization of petroleum products, environmental pollution, etc., achieve the effects of good industrial application prospects, long operation cycle and high activity

Active Publication Date: 2018-07-03
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main problems of the above-mentioned Merox process are: only mercaptan can be converted, and the deep desulfurization of petroleum products cannot be realized; a large amount of alkali residue is discharged, which seriously pollutes the environment
[0007] CN101077984B discloses a method for deep desulfurization of liquefied petroleum gas, which is a non-caustic alkali deodorization technology; CN100462146C discloses a preparation method for a catalyst used to convert mercaptans contained in gasoline, which belongs to the non-alkaline deodorization technology, and the above two The technology needs to continuously add lye or water in the process of use, so it does not really solve the problem of deep desulfurization of light petroleum processed products and the environmental pollution caused by liquid alkali discharge
When the catalyst is used to treat FCC gasoline, although the mercaptan content can be reduced from 212 μg / g to 10 μg / g, the research octane number (RON) of gasoline is lost by 3.3 units, and the motor octane number (MON) is lost 3.0 units

Method used

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  • Catalyst for light hydrocarbon desulfanization based on control of alumina crystal plane and its preparation method
  • Catalyst for light hydrocarbon desulfanization based on control of alumina crystal plane and its preparation method
  • Catalyst for light hydrocarbon desulfanization based on control of alumina crystal plane and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] This embodiment provides a light hydrocarbon sweetening catalyst based on γ-alumina crystal face regulation and its preparation method, which is implemented through the following steps:

[0070] (1) Hydrothermal treatment of γ-alumina raw material

[0071] Mix 1L of deionized water and 1g of concentrated nitric acid with a mass fraction of 65% to prepare a nitric acid solution, and then add 250g of γ-Al to it 2 o 3 powder, the γ-Al 2 o 3 The specific surface area of ​​the powder is 280m 2 / g, the pore volume is 0.71cm 3 After mixing evenly, put it into a reaction kettle, and after hydrothermal treatment at a constant temperature of 170°C in an oven for 7 hours, filter out the solid product, dry it at 120°C for 2 hours, and then roast it at 520°C for 4 hours to obtain the hydrothermally treated product of this example. gamma-alumina powder.

[0072] figure 1 The XRD spectra of gamma-alumina after hydrothermal treatment and gamma-alumina without hydrothermal treatm...

Embodiment 2

[0080] This example provides a light hydrocarbon sweetening catalyst based on γ-alumina crystal face regulation and its preparation method, which is implemented through the following steps:

[0081] (1) Hydrothermal treatment of γ-alumina raw material

[0082] Mix 1L of deionized water and 2g of acetic acid to prepare an acetic acid solution, and then add 400g of γ-Al to it 2 o 3 powder, the γ-Al 2 o 3 The specific surface area of ​​the powder is 320m 2 / g, the pore volume is 0.75cm 3 After mixing evenly, put it into a reaction kettle, heat it in an oven at a constant temperature of 190°C for 5 hours, filter out the solid product, dry it at 120°C for 4 hours, and roast it at a constant temperature of 520°C for 4 hours to obtain the hydrothermal treatment of this example. gamma-alumina powder.

[0083] (2) Preparation of catalyst carrier

[0084] Mix 100g of the above-mentioned γ-alumina powder after hydrothermal treatment with 2g of turnip powder, 4.5g of concentrated n...

Embodiment 3

[0088] This example provides a light hydrocarbon sweetening catalyst based on γ-alumina crystal face regulation and its preparation method, which is implemented through the following steps:

[0089] (1) Hydrothermal treatment of γ-alumina raw material

[0090] Mix 1L of deionized water and 1g of concentrated nitric acid with a mass fraction of 65% to prepare a nitric acid solution, and then add 400g of γ-Al to it 2 o 3 powder, the γ-Al 2 o 3 The specific surface area of ​​the powder is 260m 2 / g, the pore volume is 0.78cm 3 After mixing evenly, put it into a reaction kettle, heat it in an oven at a constant temperature of 180°C for 6 hours, filter out the solid product, dry it at 120°C for 4 hours, and roast it at a constant temperature of 500°C for 4 hours to obtain the hydrothermal treatment of this example. gamma-alumina powder.

[0091] (2) Preparation of catalyst carrier

[0092] 100g of the above hydrothermally treated γ-alumina powder was kneaded with 2g of turni...

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Abstract

The invention provides a light hydrocarbon sweetening catalyst based on aluminum oxide crystal face regulation and control and a preparation method of the light hydrocarbon sweetening catalyst. The light hydrocarbon sweetening catalyst is prepared by taking gamma-aluminum oxide after hydro-thermal treatment regulation and control as a carrier and nickel and molybdenum and active metals. The light hydrocarbon sweetening catalyst provided by the invention is a high-activity and high-selectivity catalyst, can be used for catalyzing thiol and alkadiene in light hydrocarbon to act to generate large-molecular sulfide, can be also used for catalyzing selective hydrogenation saturation of diolefin, is high in sweetening activity and high in diolefin hydrogenation selectivity when being compared with a conventional catalyst and is long in circulation period and relatively good in industrial application prospect as active components are not lost and low in probability of inactivation.

Description

technical field [0001] The invention relates to a light hydrocarbon sweetening catalyst based on alumina crystal face regulation and a preparation method thereof, and belongs to the technical field of refining petroleum products. Background technique [0002] With the increasingly stringent environmental protection regulations, countries around the world have put forward more and more stringent requirements on the quality of petroleum processed products, especially the stricter restrictions on the sulfur content of petroleum processed products. The sulfides contained in light petroleum products are mainly mercaptans (RSH), sulfides (RSR), etc. Among them, mercaptans have the greatest impact on product quality, not only have a foul smell, strong corrosiveness, but also affect Product stability. [0003] The sweetening technology of light petroleum products has been using the Merox catalytic oxidation sweetening process developed by UOP. The principle is to use the weak acidi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883B01J32/00B01J21/04C10G45/08B01J35/10C07C5/05
CPCB01J21/04B01J23/002B01J23/883B01J35/1019B01J35/1042B01J2523/00C07C5/05C07C2521/04C07C2523/883C10G45/08C10G2300/201C10G2300/202B01J2523/31B01J2523/68B01J2523/847
Inventor 鲍晓军王磊刘海燕
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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