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Hydrotreating method for heavy residual oil

A heavy residual oil and hydrotreating technology, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., to achieve the effect of ensuring long-term stable use, reducing possibility, and reducing temperature rise

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot solve the problem that the demetallizer bed is prone to hot spots

Method used

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  • Hydrotreating method for heavy residual oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The medium-sized residual oil hydrotreating test device of the Sinopec Petrochemical Research Institute was used to hydrotreat the light sandy slag A (see Table 1 for properties).

[0032] Three reactors are used, and the catalyst loading capacity of each reactor is 300mL. The catalyst loading conditions are shown in Table 2 (one reverse is the abbreviation of the first reactor, and the others are similar), wherein the high-selectivity hydrodemetallization catalyst used The properties of R-HS-1 are shown in Table 3. Hydrotreating conditions include: reaction temperature 380°C, hydrogen partial pressure 14.0MPa, hydrogen-oil volume ratio 700Nm 3 / m 3 , the volumetric space velocity is 0.2h -1 . Carry out the tests of 100h and 1000h respectively, and detect the properties of the product during 100h and 1000h, the results are shown in Table 4.

[0033] Table 1

[0034]

Light sandy slag A

Density at 20°C, kg / m 3

995.5

Viscosity at 100...

Embodiment 2

[0048] According to the method of Example 1, the light sandy slag A was subjected to hydrogenation treatment. The difference is that the catalyst loading conditions are shown in Table 7, and the properties of the high-selectivity hydrodemetallation catalyst R-HS-2 used are shown in Table 3. Hydrotreating conditions include: reaction temperature 330°C, hydrogen partial pressure 18.0MPa, hydrogen-oil volume ratio 1500Nm 3 / m 3 , the volumetric space velocity is 0.5h -1 . Carry out the tests of 100h and 1000h respectively, and detect the properties of the product at 100h and 1000h, the results are shown in Table 8.

[0049] Table 7

[0050]

[0051] Table 8

[0052]

Embodiment 3

[0054] According to the method of Example 1, the light sand and normal slag A was hydrotreated. The difference is that the catalyst loading conditions are shown in Table 9, and the properties of the highly selective hydrodemetallation catalyst R-HS-3 used are shown in Table 3. Hydrotreating conditions include: reaction temperature 400°C, hydrogen partial pressure 12.0MPa, hydrogen-oil volume ratio 1200Nm 3 / m 3 , the volume space velocity is 0.8h -1 . Carry out the tests of 100h and 1000h respectively, and detect the properties of the product during 100h and 1000h, the results are shown in Table 10.

[0055] Table 9

[0056]

[0057] Table 10

[0058]

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PUM

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Abstract

The invention provides a hydrotreating method for heavy residual oil. The method is characterized by including: under heavy residual oil hydrotreating reaction conditions, contacting the heavy residual oil and hydrogen with a hydrogenation protective catalyst bed, a highly selective hydrodemetallization catalyst bed and a hydrodesulfurization catalyst bed that are disposed in order. Specifically, the highly selective hydrodemetallization catalyst in the highly selective hydrodemetallization catalyst bed comprises a carrier and highly selective hydrogenation active metal components loaded on the carrier. The highly selective hydrogenation active metals in the highly selective hydrogenation active metal components are at least one group VB metal and at least one group VIB metal. Under the circumstances of a constant equipment treatment capacity and a constant catalyst overall reaction activity, the method provided in the invention optimizes a catalyst grading scheme, reduces the temperature rise of a hydrodemetallization bed, lowers the possibility of hotspot generation, and guarantees the long-term stabile use of the catalysts.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of heavy residual oil. Background technique [0002] With the increasingly heavy and inferior crude oil at home and abroad, residual oil hydrotreating technology has been increasingly widely used. According to the different types of reactors, there are mainly four process types for residual oil hydrogenation: fixed bed, ebullating bed, suspension bed and moving bed. Among them, the fixed-bed residual oil hydrogenation process is simple, easy to operate, relatively low equipment investment, and mature technology. Therefore, most of the current industrialized residual oil hydrogenation units adopt the fixed-bed process. However, the fixed bed process also has its own shortcomings, such as a relatively short operating cycle, the catalyst cannot be replaced online, and problems such as local overheating or "hot spots" in the bed are prone to occur. [0003] During the operation, it is a common...

Claims

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Application Information

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IPC IPC(8): C10G65/04
Inventor 董凯戴立顺刘涛牛传峰邵志才邓中活施瑢杨清河胡大为孙淑玲
Owner CHINA PETROLEUM & CHEM CORP
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