Heavy and inferior raw material hydrotreatment method

A kind of hydrotreating, inferior technology, applied in hydrotreating process, treating hydrocarbon oil, petroleum industry and other directions, can solve the problems of increasing reactor scale, not suitable for optimization of hydrogenation performance, unstable operation, etc. Effects of hydrodesulfurization activity and metal removal activity, suitable asphaltene conversion performance, and comprehensive reaction performance improvement

Active Publication Date: 2012-05-23
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Although the ebullating bed reactor and method realize the use of multiple ebullating bed catalysts in one reactor, a large number of internal components are used in the reactor, which on the one hand causes complex structure and high equipment cost, and on the other hand causes the volume utilization of the reactor to be low. Low, increased reactor scale, unstable operation, etc.
Although the pore structure of ebullating bed catalysts can be adjusted using existing technologies, it is generally not easy to adjust the distribution of large pores and small pores for the same catalyst.
In addition, the hydrogenation active metal components in the large and small pores cannot be optimized and adjusted, so it is not suitable for flexible optimization of the hydrogenation performance required for different pore sizes.

Method used

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  • Heavy and inferior raw material hydrotreatment method

Examples

Experimental program
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Effect test

preparation example Construction

[0018] The preparation process of the ebullated bed hydrotreating catalyst is to firstly prepare the microspherical catalyst carrier, and then use the impregnation method to support the required hydrogenation active metal components. The preparation process of the catalyst carrier is as follows: the raw materials of the catalyst carrier with suitable humidity are made into particles of suitable size, and then the particles are spheroidized, and the spheres are dried and calcined to form a spherical catalyst carrier.

[0019] The drying and calcination of the catalyst carrier can adopt conditions well known to those skilled in the art, such as natural drying or drying at 80-150°C, and calcination at 600-1000°C for 1-6 hours. The impregnation method to support the active hydrogenation metal component can be carried out by methods well known to those skilled in the art, such as making a solution of the required active metal salt, impregnating the catalyst carrier with the solution...

Embodiment 1

[0023] Catalyst preparation

[0024] 1. Preparation of Catalyst A

[0025] Prepare a spherical catalyst carrier with an average pore diameter of 22nm and a spherical particle diameter of 0.4mm. Other catalyst preparation processes refer to US4328127 and CN200710010377.5.

[0026] Prepare the Mo-Ni solution according to the conventional method, and the MoO in the solution 3 The NiO content is 4.01%, and the NiO content is 1.03%. The above-mentioned carrier was impregnated with this solution by an equal-volume impregnation method to obtain the final catalyst A, whose properties are shown in Table 1.

[0027] 2. Preparation of Catalyst B

[0028] A spherical catalyst carrier with an average pore diameter of 11nm was prepared, and the spherical catalyst particle size was 0.4mm. Other catalyst preparation processes were carried out according to the methods of US7074740 and CN200710010377.5.

[0029] Prepare the Mo-Co-P solution according to the conventional method, and the MoO ...

Embodiment 2

[0032] Catalysts A and B in Example 1 were selected and mixed in a ratio of 1:0.5 by volume and loaded into a 1L autoclave, and a vacuum residue hydrotreating test was carried out in the presence of hydrogen. The properties of the vacuum residue selected for the test are as follows: the distillation range is above 520°C, the sulfur content is 2.8wt%, the metal (Ni+V+Fe) content is 357μg / g, and the asphaltene content is 6.8%. The test conditions are: reaction temperature 408°C, reaction pressure 13MPa, reaction time 0.5h, oil agent volume ratio 15. Repeat the above conditions several times, remove the catalyst by filtration to obtain the product oil, and mix the product oil obtained several times for fixed bed evaluation.

[0033] FZC-30 and FZC-40 used in industrial devices were mixed at a volume of 3:1 and loaded into a 200mL small-scale fixed-bed hydrogenation unit. After conventional sulfidation treatment, the hydrotreatment test was carried out in the presence of hydrogen....

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Abstract

The invention discloses a heavy and inferior raw material hydrotreatment method. A boiling bed reactor is combined with a fixed bed reactor. Raw oil and hydrogen enter from the bottom of the boiling bed reactor. The hydrogenation reaction is carried out under the fixed bed hydrogenation condition. A material is discharged from the bottom of the fixed bed reactor and enters into a separation system. A mixed catalyst of at least two catalysts with different properties is used in the boiling bed hydrotreatment reactor. In comparison with the prior art, the method provided by the invention can be used to effectively improve the operation performance of boiling bed residuum hydrotreatment and fixed bed hydrotreatment technologies and raise the hydrogenation activity level and flexibility of operation.

Description

technical field [0001] The invention relates to a hydrogenation treatment method for heavy and inferior raw materials, in particular to a hydrogenation treatment process for processing inferior residues with high heavy metal content by using a unique combination of ebullating bed and fixed bed. Background technique [0002] In recent years, with the intensification of heavy and inferior crude oil, the difficulty of crude oil processing has increased, and the yield of light oil has decreased. However, the market demand for high-quality oil products has continued to increase, and environmental protection regulations have become more and more stringent. , the oil refining industry is facing more severe challenges, and the processing and full utilization of residual oil has become a topic of concern to the global oil refining industry. Residual oil hydrotreating technology is a deep processing technology for heavy oil, and the development of this technology is an effective way t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04
Inventor 方向晨孙素华朱慧红蔡立袁胜华刘杰杨光
Owner CHINA PETROLEUM & CHEM CORP
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