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Residual oil hydrotreatment catalyst grading method and residual oil hydrotreatment method

A technology for residual oil hydrogenation and catalyst, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problem of low impurity removal ability and low nitrogen removal ability, and achieve the reduction of catalyst carbon deposition and strong cracking ability , the effect of extending the operating cycle

Active Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a new residual oil hydrogenation method to overcome the defect that the catalytic system obtained by the existing residual oil hydrotreating catalyst grading method has low impurity removal ability (especially denitrification ability) Catalyst grading method and residual oil hydrotreating method

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  • Residual oil hydrotreatment catalyst grading method and residual oil hydrotreatment method
  • Residual oil hydrotreatment catalyst grading method and residual oil hydrotreatment method

Examples

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Embodiment 1

[0050] This embodiment is used to illustrate the residue hydrotreating catalyst grading method and the residue hydrotreating method provided by the present invention.

[0051] The reactor is sequentially filled with G1, M1, S1 and N1 from front to back, and the filling volume ratio is 5:35:30:30. The residual oil and hydrogen are mixed and injected into the reactor for hydrotreating. The hydrotreating conditions are shown in Table 3, and the impurity removal rate is shown in Table 4.

Embodiment 2

[0055] This embodiment is used to illustrate the residue hydrotreating catalyst grading method and the residue hydrotreating method provided by the present invention.

[0056] The residue hydrotreating was carried out according to the method of Example 1, except that the reactor was filled with G1, M1, S2, N2, and N1 from front to back, and the filling volume ratio was 5:35:30:15:15. The impurity removal rate is shown in Table 4.

Embodiment 3

[0060] This embodiment is used to illustrate the residue hydrotreating catalyst grading method and the residue hydrotreating method provided by the present invention.

[0061] The feedstock oil and test conditions in this example are the same as those in Example 1. The reactor is filled with G1, M1, S2, and N1 from front to back. The filling volume ratio is 5:35:30:30. The impurity removal rate is shown in the table 4 shown.

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Abstract

The invention relates to a residual oil hydrotreatment catalyst grading method and a residual oil hydrotreatment method. The residual oil hydrotreatment catalyst grading method comprises that a residual oil hydrotreatment device is orderly filled with a hydrogenation protection catalyst, a hydrogenation metal-removal catalyst, a hydrodesulfurization catalyst and a hydrodenitrogenation catalyst along a material flowing direction and is characterized in that along a material flowing direction, the total acid amount of the catalysts is gradually increased, a ratio of Lewis acid to the total acids is gradually decreased and a ratio of Bronsted acid to the total acids is gradually increased. The residual oil hydrotreatment method comprises pouring residual oil into the residual oil hydrotreatment device. The residual oil hydrotreatment device is filled with the catalysts according to the above grading method. In residual oil hydrotreatment, the residual oil hydrotreatment catalyst grading method substantially improves a denitrification rate.

Description

Technical field [0001] The invention relates to a method for grading a residue hydrotreating catalyst, and a method for hydrotreating residue. Background technique [0002] The main purpose of the fixed-bed residual oil hydrotreating process is to remove a large amount of impurities contained in the residual oil feedstock, such as sulfur, nitrogen, metals, and asphaltenes, and to provide raw materials for the catalytic cracking unit. The main reactions of this process include hydrodemetalization, hydrodesulfurization, hydrodenitrogenation, aromatics saturation, and hydrocarbon hydrocracking. Early fixed-bed residue hydrotreating technology was dominated by desulfurization, but in recent years, with the progress of fixed-bed residue hydrotreating technology and catalytic cracking technology, the focus of fixed-bed residue hydrotreating technology has changed from desulfurization. For the removal of residual carbon, nitrogen removal and long-term operation. Increasing the denitri...

Claims

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Application Information

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IPC IPC(8): C10G65/02
Inventor 邓中活戴立顺牛传峰刘涛邵志才董凯施瑢杨清河
Owner CHINA PETROLEUM & CHEM CORP
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