Gasoline selective hydrodesulfurization catalyst, preparation method and application thereof, and gasoline selective hydrodesulfurization method

A hydrodesulfurization and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as loss of octane number and increase in hydrogen consumption, achieve low olefin saturation rate, reduce Sulfur content, effect of improving hydrodesulfurization activity and hydrodesulfurization selectivity

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the current catalyst is used for hydrodesulfurization in catalytic cracked gasoline, the olefins in catalytic cracked gasoline are easily saturated under hydrodesulfurization reaction conditions, resulting in loss of octane number and increased hydrogen consumption

Method used

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  • Gasoline selective hydrodesulfurization catalyst, preparation method and application thereof, and gasoline selective hydrodesulfurization method

Examples

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Comparison scheme
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preparation example Construction

[0022] Preferably, the preparation method of the carrier comprises:

[0023] (1) mixing pseudo-boehmite with or without additives with a solution containing an inorganic aluminum-containing compound to obtain a first slurry;

[0024] (2) adjusting the pH of the slurry to 7-10 to obtain a second slurry;

[0025] (3) aging the second slurry;

[0026] (4) The solid aging product obtained in step (3) is sequentially subjected to roasting and hydrothermal treatment.

[0027] The inventors of the present invention found that the carrier prepared by this specific method can achieve better hydrodesulfurization effect when combined with the above-mentioned active components.

[0028] In the present invention, the types of the inorganic aluminum-containing compound can be selected widely. Preferably, the inorganic aluminum-containing compound is selected from at least one of aluminum sulfate, sodium metaaluminate, aluminum nitrate and aluminum trichloride.

[0029] The present invent...

specific Embodiment approach

[0039] According to a specific embodiment of the present invention, the preparation method of the carrier further includes filtering, washing, and drying the aged product obtained in step (3) to obtain the solid aged product. In the present invention, the specific operations of filtering, washing and drying are not particularly limited, and can be performed according to conventional technical means in the art. The drying conditions include but are not limited to: the temperature is 60-180°C, preferably 80-150°C; the time is 0.5-24h, preferably 3-12h.

[0040] According to a preferred embodiment of the present invention, the calcination conditions include: a temperature of 300-1200° C., preferably 400-950° C.; a time of 0.5-15 hours, preferably 2-10 hours.

[0041] According to the present invention, specifically, the hydrothermal treatment is carried out under closed conditions, such as in a closed reactor. The closed reactor can be any reactor that can realize the hydrotherm...

Embodiment approach

[0042] According to a preferred embodiment of the present invention, the conditions of the hydrothermal treatment include: the mass ratio of water to the solid product obtained by roasting is 1-20:1, preferably 5-10:1; the temperature is 100-250°C, Preferably it is 140-220°C; the time is 0.5-48 hours, preferably 1-24 hours.

[0043] Unless otherwise specified, the dry basis in the present invention refers to: Alumina hydrate is raised to 600°C at a rate of 4°C / min in a muffle furnace under an air atmosphere, and then kept at a constant temperature of 600°C for 4 hours, and the product after roasting The percentage of the ratio of the weight of the alumina hydrate to the weight of the alumina hydrate before roasting, dry basis=the weight of the product after roasting÷the weight of the alumina hydrate before roasting×100%.

[0044] The pseudo-boehmite in the present invention may or may not contain additives, which is not particularly limited in the present invention. The auxil...

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Abstract

The invention relates to the field of catalysts, and particularly discloses a gasoline selective hydrodesulfurization catalyst, a preparation method and application thereof, and a gasoline selective hydrodesulfurization method. The catalyst comprises a carrier as well as an active component A, an active component B and a phosphorus element which are loaded on the carrier, the active component A is selected from at least one of VIII group metal elements, and the active component B is selected from at least one of VIB group metal elements; and the molybdenum equilibrium adsorption capacity of the carrier is 6-12% in terms of MoO3, the specific surface area is 100-400 m < 2 >/g, and the pore volume is 0.5-1.5 cm < 3 >/g. When the hydrodesulfurization catalyst provided by the invention is used for a gasoline selective hydrodesulfurization reaction, the sulfur content in gasoline can be remarkably reduced, and the hydrodesulfurization catalyst has a relatively high hydrodesulfurization rate and a relatively low olefin hydrogenation saturation rate.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a gasoline selective hydrodesulfurization catalyst, its preparation method and application, and a gasoline selective hydrodesulfurization method. Background technique [0002] Increasing awareness of environmental protection and stricter environmental regulations force the oil refining industry to pay more attention to the development of clean fuel production technology. How to economically and reasonably produce ultra-low sulfur oil products has become one of the key issues that the oil refining industry needs to solve at present and in a certain period of time in the future. one. [0003] In order to produce clean gasoline, both at home and abroad are devoting themselves to the development of highly selective catalytic cracking gasoline deep hydrodesulfurization catalysts with excellent performance. Hydrogenation catalysts are usually prepared by impregnation, that is, impregnating a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19C10G45/08B01J35/10
CPCB01J27/19C10G45/08B01J35/1019B01J35/1042B01J35/1047
Inventor 李会峰刘锋褚阳王薇张登前张乐习远兵
Owner CHINA PETROLEUM & CHEM CORP
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