A kind of alumina-based hydrorefining catalyst and its preparation method and application

A hydrorefining, alumina-based technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of increasing dispersibility and superior performance

Active Publication Date: 2017-07-21
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the above literature research, it can be found that there are few reports on the application of different crystal forms of alumina carriers in the field of FCC diesel hydrotreating

Method used

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  • A kind of alumina-based hydrorefining catalyst and its preparation method and application
  • A kind of alumina-based hydrorefining catalyst and its preparation method and application
  • A kind of alumina-based hydrorefining catalyst and its preparation method and application

Examples

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Embodiment 1

[0041] This embodiment provides an alumina-based hydrofinishing catalyst for FCC diesel, the preparation method of which comprises the following steps:

[0042] After mixing 30g of bomite powder and 1g of scallop powder, add 1g of concentrated nitric acid, 0.8g of phosphoric acid and an appropriate amount of water dropwise; after fully back-mixing in the extruder, extrude into a cylindrical shape with a diameter of 1.5mm; Dry at 110°C for 2 hours; then heat up to 1050°C at 2°C / min and bake at constant temperature for 6 hours to obtain θ-Al 2 o 3 Carrier (specific surface area is 121m 2 g -1 , the pore diameter is 20.5nm, the pore volume is 0.77cm 3 g -1 );

[0043] First, 6.6g of ammonium molybdate dissolved in 30g of water was used to impregnate θ-Al 2 o 3 Carrier, ultrasonically dispersed for 20 minutes, stirred for 5 minutes, dried at 110°C for 2h, calcined at 550°C for 6 hours, cooled to room temperature; then 4.5g of cobalt sulfate dissolved in 30g of water was use...

Embodiment 2

[0046] This embodiment provides an alumina-based hydrofinishing catalyst for FCC diesel, the preparation method of which comprises the following steps:

[0047] The preparation of catalyst carrier material and step-by-step impregnation of active metal in this embodiment are the same as in Example 1;

[0048] Dissolve 9.4g of EDTA in 30g of ammonia solution with a pH of 9, co-impregnate the catalyst loaded with cobalt and molybdenum, dry at 110°C for 6 hours, break or cut into required lengths according to the process requirements, and the carrier used is recorded as Z-A, the corresponding catalyst is recorded as Cat-A2.

Embodiment 3

[0050] This embodiment provides an alumina-based hydrofinishing catalyst for FCC diesel, the preparation method of which comprises the following steps:

[0051] Prepared by the method of Example 1 to obtain θ-Al 2 o 3 Carrier, first impregnated θ-Al with 6.6g ammonium molybdate dissolved in 30g water 2 o 3 Carrier, then ultrasonically disperse it for 20 minutes, stir for 5 minutes, dry at 110°C for 2h, bake at 550°C for 6 hours, and cool to room temperature; then dissolve 4.5g of cobalt sulfate in 30g of water to co-impregnate molybdenum-loaded θ -Al 2 o 3 Carrier, dried at 110°C for 2 hours, and calcined at 550°C for 6 hours;

[0052] Dissolve 3.1g of NTA in 30g of ammonia solution with a pH of 9, co-impregnate the catalyst loaded with cobalt and molybdenum, and dry at 110°C for 6 hours. According to the process requirements, it is broken or cut into the required length. The corresponding catalyst is recorded as Cat-A3.

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Abstract

The invention provides an aluminum oxide based hydrorefining catalyst as well as a preparation method and application thereof. The method comprises the following steps: 1, immersing active metal components into an aluminum oxide carrier, and drying and roasting to obtain an active metal component loaded catalyst; and 2, introducing an organic complexing agent into the active metal component loaded catalyst and drying to obtain the aluminum oxide based hydrorefining catalyst, wherein the aluminum oxide carrier comprises delta-Al2O3 or theta-Al2O3. The aluminum oxide based hydrorefining catalyst provided by the invention can be used for FCC diesel oil so that the yield of the FCC diesel oil is higher than 99%, the content of sulfur is lower than 10ppm, and China 5 standard requirements are met.

Description

technical field [0001] The invention relates to an alumina-based hydrorefining catalyst and a preparation method and application thereof, belonging to the field of petroleum refining. Background technique [0002] With the widespread popularization of automobile traffic, the demand for motor vehicle fuel oil in various countries has increased rapidly, and the resulting environmental pollution has become more and more serious. According to the survey results of relevant foreign institutions, during the 15 years from 2001 to 2014, the total size of the global automobile market increased by 39%, of which gasoline vehicles increased by 23% and diesel vehicles increased by 97%. Therefore, in order to control the air pollution caused by automobile exhaust emissions, countries all over the world have formulated strict diesel standards. For example, the Euro IV emission standard implemented in Europe since 2005 stipulates that the sulfur content of vehicle diesel is less than 50 μg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882C10G45/08
Inventor 段爱军方鹤张明会高善彬赵震姜桂元刘坚韦岳长王喜龙
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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