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A heavy oil separation method and its processing system

A technology for separation method and treatment system, which is applied in the field of heavy oil separation method and its treatment system, can solve the problems such as insignificant separation effect of heavy oil raw materials, and achieve the solution of insignificant separation effect, high yield and excellent properties Effect

Active Publication Date: 2017-04-05
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a heavy oil separation method and its processing system, which can effectively solve the problem of insignificant separation effect of heavy oil raw materials in the extraction and separation process in the prior art, thereby Obtain the target product with high yield and excellent properties

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  • A heavy oil separation method and its processing system
  • A heavy oil separation method and its processing system
  • A heavy oil separation method and its processing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Adopt petroleum residue (boiling point>420 ℃) ​​as raw material, adopt C3-C4 mixed solvent (wherein, main solvent, secondary solvent and supercritical solvent all are this mixed solvent), the composition of this mixed solvent is as follows:

[0063] components propane Isobutane n-butane Composition, m% 25 50 25

[0064] like figure 2 As shown, the petroleum residue is separated by the three-stage separation method. For the specific process, please refer to the above-mentioned three-stage separation method. The process parameters involved in each step of the method are as follows:

[0065] 1) The mass flow rate ratio of main solvent and petroleum residue is 2.4:1;

[0066] 2) The mass flow rate ratio of secondary solvent and petroleum residue is 0.1:1;

[0067] 3) The mixing temperature of petroleum residue and main solvent is 120°C and the pressure is 4.6MPa;

[0068] 4) Three stages of packing are installed in the upper area of ​​the ex...

Embodiment 2

[0077] Adopt petroleum residue (boiling point>420 ℃) ​​as raw material, adopt C4 mixed solvent (wherein, main solvent, secondary solvent and supercritical solvent all are this mixed solvent), the composition of this mixed solvent is as follows:

[0078] components Isobutane n-butane Composition, m% 25 75

[0079] like figure 2 As shown, the petroleum residue is separated by the three-stage separation method. For the specific process, please refer to the above-mentioned three-stage separation method. The process parameters involved in each step of the method are as follows:

[0080] 1) The mass flow rate ratio of the main solvent to the petroleum residue is 2.8:1;

[0081] 2) The mass flow rate ratio of secondary solvent and petroleum residue is 0.2:1;

[0082] 3) The mixing temperature of petroleum residue and main solvent is 100°C, and the pressure is 4.3MPa;

[0083] 4) 4 sections of packing are installed in the upper area of ​​the extraction to...

Embodiment 3

[0093] Bottom product (atmospheric residue) obtained by atmospheric distillation of Canadian oil sand bitumen (boiling point>350°C, density at 20°C>1.0g / cm 3 ) is raw material, adopts C5 mixed solvent (wherein, main solvent, secondary solvent and supercritical solvent all are this mixed solvent), the composition of this mixed solvent is as follows:

[0094] components Isopentane n-pentane Composition, m% 25 75

[0095] like figure 2 As shown, the atmospheric residue is separated by the three-stage separation method. For the specific process, please refer to the above three-stage separation method. The process parameters involved in each step of the method are as follows:

[0096] 1) The mass flow rate ratio of the main solvent to the atmospheric residue is 2.75:1;

[0097] 2) The mass flow rate ratio of secondary solvent and atmospheric residue is 0.25:1;

[0098] 3) The mixing temperature of atmospheric residual oil and main solvent is 170°C and ...

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Abstract

The present invention provides a heavy oil separation method and a treatment system thereof. According to the separation method, an extraction tower with a plurality of filler sections arranged on the upper portion region is used, distributors are arranged between the adjacent filler sections, and a supercritical solvent from a supercritical solvent recovery tower is introduced through the distributors so as to further separate the heavy components in the deasphalted oil phase on the upper portion of the extraction tower. With the separation method of the present invention, the problem that the heavy oil raw material separation effect is not significant during the extraction separation process in the prior art can be effectively solved so as to obtain the target product with characteristics of high yield and excellent property.

Description

technical field [0001] The invention relates to a heavy oil separation method and a processing system thereof, belonging to the technical field of petroleum processing. Background technique [0002] Solvent deasphalting is a technology to remove the heavy component asphalt in petroleum heavy oil, which is suitable for heavy oil, oil sand bitumen obtained from mining, and various atmospheric and vacuum residues obtained during petroleum processing The density of this type of heavy oil (20°C)>0.934g / cm 3 Or a boiling point higher than 350°C. The deasphalted oil after deasphalting is mainly used to produce lubricating oil base oil or as a raw material for catalytic cracking or hydrocracking (not limited to) subsequent processing. The deasphalted oil can be used as road asphalt, construction asphalt or gasification raw material. [0003] Existing solvent deasphalting technologies mainly include secondary or tertiary processes. In the two-stage extraction and separation pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/00
Inventor 赵锁奇许志明孙学文徐春明
Owner CHINA UNIV OF PETROLEUM (BEIJING)