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Catalyst for hydrogenation treatmet of gas oil and method for prepn. thereof and process for hydrogenation treatment of gas oil

A catalyst and gas oil technology, applied in the field of catalysts for hydrotreating gas oil, can solve the problems of low efficiency, complicated steps, short catalyst life and the like

Inactive Publication Date: 2003-12-24
COSMO OIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Disadvantages of the catalyst production methods described above are that some of them require complicated steps, and some of the catalysts obtained are not suitable for ultra-deep desulfurization of gas oil, some methods have low efficiency in the range of ultra-deep desulfurization, others Catalyst life is shorter in the method

Method used

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  • Catalyst for hydrogenation treatmet of gas oil and method for prepn. thereof and process for hydrogenation treatment of gas oil
  • Catalyst for hydrogenation treatmet of gas oil and method for prepn. thereof and process for hydrogenation treatment of gas oil
  • Catalyst for hydrogenation treatmet of gas oil and method for prepn. thereof and process for hydrogenation treatment of gas oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] Silica and alumina hydrate were kneaded together, the obtained mixture was extruded and then calcined at 600° C. for 2 hours to obtain a columnar silica-alumina composite support (diameter 1 / 16 inch) The weight ratio of silicon / alumina is 1 / 99; the pore volume is 0.70ml / g; the specific surface area is 359m 2 / g; average pore diameter, 70 Angstroms).

[0116] 7.48 g of cobalt citrate and 1.17 g of phosphoric acid (85% aqueous solution) were added to 20.3 g of ion-exchanged water, followed by heating to 80° C. and stirring for 10 minutes. Subsequently, 11.41 g of phosphomolybdic acid was added thereto and dissolved, followed by stirring at the same temperature for 15 minutes to prepare an impregnation solution. The pH of this impregnation solution was 0.52.

[0117] 30.0 g of silica-alumina composite support was added to the eggplant-shaped flask. The entire impregnation solution was added to it using a pipette. The support was soaked in the solution at about 25°C for...

Embodiment 2

[0120] SiO 2 / Al 2 o 3 SHY zeolite powder (average particle diameter 3.5 μm; 87% of all zeolite particles having a particle diameter of 6 μm or less) at a molar ratio of 6 was kneaded together with alumina hydrate. The obtained mixture was extruded and then calcined at 600° C. for 2 hours to obtain a columnar zeolite-alumina composite support with a diameter of 1 / 16 inch (zeolite / alumina weight ratio 7 / 93; pore volume 0.69 ml / g; Specific surface area 374m 2 / g; average pore diameter 67 Angstroms).

[0121] 7.48 g of cobalt citrate and 1.17 g of phosphoric acid (85% aqueous solution) were added to 20.3 g of ion-exchanged water, followed by heating to 80° C. and stirring for 10 minutes. Subsequently, 11.41 g of phosphomolybdic acid was added thereto and dissolved, followed by stirring at the same temperature for 15 minutes to prepare an impregnation solution. The pH of this impregnation solution was 0.52.

[0122] 30.0 g of the zeolite-alumina composite support was added t...

Embodiment 3

[0125] 7.91 g of cobalt citrate and 1.12 g of phosphoric acid (85% aqueous solution) were added to 20.2 g of ion-exchanged water, followed by heating to 80° C. and stirring for 10 minutes. Subsequently, 14.50 g of phosphomolybdic acid was added thereto and dissolved, followed by stirring at the same temperature for 15 minutes to prepare an impregnation solution. The pH of this impregnation solution was 0.54.

[0126] Into the eggplant-shaped flask was added 30.0 g of the same zeolite-alumina composite support as in Example 2. The entire impregnation solution was added to it using a pipette. The support was soaked in the solution at about 25°C for 3 hours.

[0127] Thereafter, the carrier was dried in a nitrogen flow, and then dried in a muffle furnace under air flow, atmospheric pressure, and 120° C. for about 16 hours to obtain catalyst C.

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Abstract

A catalyst for hydrotreating gas oil, which comprises an inorganic oxide support having provided thereon: at least one selected from metals in the Group 6 of the periodic table at from 10 to 30% by weight, at least one selected from metals in the Group 8 of the periodic table at from 1 to 15% by weight, phosphorus at from 1.5 to 6% by weight, and carbon at from 2 to 14% by weight, each in terms of a respective oxide amount based on the catalyst, wherein the catalyst has a specific surface area of from 220 to 300 m2 / g, a pore volume of from 0.35 to 0.6 ml / g, and an average pore diameter of about from 65 to 95 Å; a process for producing the catalyst; and a method for hydrotreating gas oil, which comprises subjecting a gas oil fraction to a catalytic reaction in the presence of the catalyst under conditions at a hydrogen partial pressure of from 3 to 8 MPa, a temperature of from 300 to 420° C., and a liquid hourly space velocity of from 0.3 to 5 hr-1.

Description

technical field [0001] The invention relates to a catalyst for hydrotreating gas oil, a preparation method of the catalyst and a method for hydrotreating gas oil using the catalyst. More specifically, the present invention relates to a catalyst, a method for preparing said catalyst, and a method for hydrotreating gas oil using said catalyst: in the hydrotreating of gas oil, the catalyst is effective in reducing the sulfur component in gas oil It has excellent activity in terms of nitrogen and nitrogen components. Compared with similar catalysts used before, the use of this catalyst can reduce the sulfur and nitrogen components in gas oil to a lower level. Background technique [0002] Recently, in order to improve the atmospheric environment, the global quality standard value for gas oil has become increasingly strict. In particular, there is a need to reduce sulfur in gas oils due to concerns that sulfur components contained in gas oils could adversely affect the life of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/047B01J23/85B01J27/188B01J27/19B01J31/02B01J31/04B01J35/10B01J37/02C10G45/08C10G45/50
CPCB01J35/1042C10G2300/4018B01J31/04B01J35/10C10G45/50B01J27/188B01J2531/847B01J2231/641B01J2531/845B01J31/2239B01J2531/0205B01J35/1038C10G2300/1059B01J35/1061C10G2400/06B01J23/85B01J37/0236B01J27/19B01J31/2234B01J35/1019B01J35/60B01J35/615B01J35/633B01J35/635B01J35/647B01J31/02
Inventor 藤川贵志大崎贵之木村洋水口博史桥本稔田上博康加藤胜博
Owner COSMO OIL CO LTD
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