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Heavy oil hydrotreating catalyst and preparation method thereof

A heavy oil hydrogenation and catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalyst, catalyst carrier, etc., can solve the problems of unfavorable active component dispersion, limited catalytic reaction performance, low specific surface area of ​​carrier alumina, etc.

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the catalysts disclosed in the above patents all have high pore volume, the specific surface area of ​​the carrier alumina is relatively low, which is not conducive to improving the dispersion of the active components, and has a strong interaction with the active components, resulting in Active metal sulfidation is not complete, these factors limit the further improvement of its catalytic performance in heavy oil hydrogenation

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Catalyst preparation

[0054] Weigh 600g of ammonium phosphate, dissolve it in 2000mL of deionized water to obtain solution A; grind 1000g of petroleum coke to powder, then add it to solution A, let it stand for 1.5h, then filter, and put the obtained solid sample in an oven at 110°C Dry for 5h. At 200°C, pretreat the dried solid sample with water vapor for 3 hours (the volumetric space velocity of the water vapor gas is 1200 hours -1 ), then raise the temperature to 400°C, continue pretreatment for 3h, and then cool to 60°C under nitrogen protection to obtain pretreated petroleum coke.

[0055] Mix 1000g of the pretreated petroleum coke obtained above, 60g of calcium carbonate and 2000g of potassium hydroxide evenly, place in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize, and raise the temperature to 500°C under the condition of a microwave power of 0.3kw , kept constant for 40 minutes, then nitrogen was introduced to normal pressur...

Embodiment 2

[0062] (1) Catalyst preparation

[0063] Weigh 500g of diammonium hydrogen phosphate, dissolve it in 2000mL of deionized water to obtain solution A; grind 1000g of petroleum coke to powder, then add it to solution A, leave it for 1.5h, then filter, and put the obtained solid sample in an oven at 110 Dry at ℃ for 5h. At 200°C, use water vapor to pretreat the dried solid sample for 3 hours (the volumetric space velocity of the water vapor gas is 1000h -1 ), then raise the temperature to 400°C, continue pretreatment for 3h, and then cool to 60°C under nitrogen protection to obtain pretreated petroleum coke.

[0064] Mix 1000g of the pretreated petroleum coke obtained above, 70g of calcium carbonate and 3000g of potassium hydroxide evenly, place in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize, and raise the temperature to 600°C under the condition of a microwave power of 0.3kw , keep it constant for 20 minutes, then pass nitrogen gas to normal pre...

Embodiment 3

[0071] (1) Catalyst preparation

[0072] Weigh 400g of ammonium dihydrogen phosphate, dissolve it in 2000mL deionized water to obtain solution A; grind 1000g of petroleum coke to powder, then add it to solution A, leave it for 1.5h, then filter, and put the obtained solid sample in an oven at 110 Dry at ℃ for 5h. At 200°C, pretreat the dried solid sample with water vapor for 3 hours (the volumetric space velocity of the water vapor gas is 800 hours) -1 ), then raise the temperature to 400°C, continue pretreatment for 3h, and then cool to 60°C under nitrogen protection to obtain pretreated petroleum coke.

[0073]Mix 1000g of the pretreated petroleum coke obtained above, 80g of calcium carbonate and 4000g of potassium hydroxide evenly, place in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumize, and raise the temperature to 400°C under the condition of a microwave power of 0.3kw , kept constant for 60 minutes, then nitrogen gas was introduced to norm...

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Abstract

The invention discloses a heavy oil hydrotreatment catalyst and a preparation method thereof, the heavy oil hydrotreatment catalyst comprises a hydrogenation active metal component and a carrier, thehydrogenation active metal component is one or more of VIB group metals and / or VIII group metals, and the carrier is petroleum coke-based activated carbon. The preparation method comprises the following steps: uniformly mixing petroleum coke, a pore-enlarging agent and an activating agent and then carrying out activating treatment; mixing the obtained sample with an acid solution, uniformly mixing, washing and drying to obtain a carrier; introducing the hydrogenation active metal into the carrier, and then drying and roasting to obtain the heavy oil hydrotreating catalyst. According to the invention, petroleum coke-based activated carbon is used as a carrier of the catalyst, so that the carbon deposition resistance of the catalyst is improved.

Description

technical field [0001] The invention belongs to the technical field of oil refining and chemical industry, and relates to a catalytic material and a preparation method thereof, in particular to a heavy oil hydrotreating catalyst and a preparation method thereof. Background technique [0002] In recent years, the quality of crude oil has deteriorated day by day, but the demand for light oil products has increased year by year. Therefore, it is of great practical significance to develop deep processing of heavy oil and increase the added value of products. As the main processing method, hydrogenation technology is facing great challenges, and it is urgent to develop better hydrogenation processes and hydrogenation catalysts with higher activity. The reactivity of heavy oil hydrogenation catalysts depends not only on the intrinsic catalytic properties of the active components, but also on the properties of the catalyst support. The specific surface area, pore structure, and su...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J32/00B01J27/19B01J35/10B01J37/08B01J37/28B01J37/10C10G49/04
CPCB01J27/19B01J21/18B01J37/0018B01J37/28B01J37/10B01J23/002C10G49/04B01J2523/00B01J35/617B01J35/615B01J35/638B01J2523/51B01J2523/68B01J2523/847
Inventor 金浩朱慧红杨光刘璐孙素华杨涛
Owner CHINA PETROLEUM & CHEM CORP
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