Pretreatment method of residual oil hydrogenation raw material and residual oil hydrogenation method

A technology for residual oil hydrogenation and hydrogenation treatment, which is applied in the field of residual oil hydrogenation process and pretreatment of residual oil hydrogenation raw materials, and can solve the problems of difficult industrialization, less residual oil lightening performance pretreatment, etc. , to improve the dispersion state, reduce the average relative molecular weight, and increase the yield

Active Publication Date: 2019-12-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The third prior art discloses a pretreatment method that uses ultrasonic treatment to improve the lightening performance of residual oil. It mainly uses the cavitation and composite effects of ultrasonic waves to change the colloidal structure of residual oil and improve the distribution of four components to achieve residual oil The overall improvement in quality has significantly improved the hydrogenation effect of residual

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  • Pretreatment method of residual oil hydrogenation raw material and residual oil hydrogenation method

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Example Embodiment

[0050] Example 1

[0051] A pretreatment method for residual oil hydrogenation feedstock includes the following steps:

[0052] (a) Preheat the vacuum residue at 100°C;

[0053] (b) The preheated residual oil is subjected to mild hydrotreating, the pressure of mild hydrotreating is 2MPa, the temperature is 300℃, and the time is 40min;

[0054] (c) Carry out cavitation treatment on the residual oil after mild hydrotreating. The cavitation device used in the cavitation treatment is a venturi tube cavitation device; the temperature of the cavitation treatment is 90°C and the pressure is 2MPa;

[0055] A method for hydrogenation of residual oil includes the following steps: hydrotreating the residual oil after cavitation treatment, the temperature of the hydrogenation reaction is 420°C, the pressure is 10MPa, and the reaction time is 1.5h.

Example Embodiment

[0056] Example 2

[0057] A pretreatment method for residual oil hydrogenation feedstock includes the following steps:

[0058] (a) The residual oil is subjected to mild hydrotreating, the pressure of the mild hydrotreating is 5MPa, the temperature is 350℃, and the time is 20min;

[0059] (b) Carry out cavitation treatment on the residual oil after mild hydrotreating. The cavitation device used in the cavitation treatment is a throttle orifice cavitation device. The temperature of the cavitation treatment is 150° C. and the pressure is 4 MPa.

[0060] A method for hydrogenation of residual oil includes the following steps: hydrotreating the residual oil after cavitation treatment, the temperature of the hydrogenation reaction is 390°C, the pressure is 9MPa, and the reaction time is 1.5h.

Example Embodiment

[0061] Example 3

[0062] A pretreatment method for residual oil hydrogenation feedstock includes the following steps:

[0063] (a) Preheat the vacuum residue at 100°C;

[0064] (b) The preheated residual oil is subjected to mild hydrotreating, the pressure of mild hydrotreating is 2.5MPa, the temperature is 310°C, and the time is 25min;

[0065] (c) Carry out cavitation treatment on the residual oil after mild hydrotreating. The cavitation device used in the cavitation treatment is a throttle orifice cavitation device. The temperature of the cavitation treatment is 150°C and the pressure is 20MPa.

[0066] A method for hydrogenation of residual oil includes the following steps: hydrotreating the residual oil after cavitation treatment, the temperature of the hydrogenation reaction is 400 DEG C, the pressure is 9 MPa, and the reaction time is 1.5 h.

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Abstract

The invention relates to the technical field of residual oil hydrogenation process, in particular to a pretreatment method of a residual oil hydrogenation raw material and a residual oil hydrogenationmethod. The pretreatment method of a residual oil hydrogenation raw material includes the steps of: carrying out cavitation treatment on residual oil subjected to mild hydrotreatment; and the mild hydrotreatment method includes: treating the residual oil raw material at a temperature of 300-350DEG C and under a pressure of 2-5MPa; the cavitation treatment is carried out at a temperature of 90-150DEG C and under a pressure of 2-20MPa. The method provided by the invention performs mild hydrotreatment and cavitation treatment on the residue oil to improve the composition structure and distribution state of the residual oil components, the obtained residual oil has reduced average relative molecular mass and significantly reduced carbon residue and viscosity, also the residual oil can be further subjected to hydrogenation reaction, the light oil yield can be substantially improved, and the coke yield is reduced.

Description

technical field [0001] The invention relates to the technical field of residual oil hydrogenation technology, in particular to a pretreatment method for residual oil hydrogenation raw material and a residual oil hydrogenation method. Background technique [0002] With the increasing shortage of crude oil at home and abroad and the acceleration of heavy and inferior crude oil, it has become a long-term trend to produce more light oil products in the process of crude oil processing. As an effective technical means to realize efficient and clean utilization of residue oil, residue Oil hydrogenation plays a pivotal role in increasing the yield of light oil and improving the utilization rate of crude oil. In order to improve the yield and quality of light oil in the hydrogenation process of residual oil to a greater extent, scholars at home and abroad have conducted a lot of research and proposed many improvement methods. [0003] Prior art 1 discloses a method for hydrogenation...

Claims

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Application Information

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IPC IPC(8): C10G69/02
CPCC10G69/02C10G2300/107C10G2300/1074C10G2300/1077C10G2300/206
Inventor 雷杰韩海波刘丹禾李治李康陈曼桥王文柯樊麦跃魏小波
Owner CHINA PETROLEUM & CHEM CORP
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