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Deasphalting device and method

A deasphalting, columnar electrode technology, applied in the treatment of hydrocarbon oil, through electro/magnetic refining, petroleum industry, etc., can solve the problems of low separation efficiency, asphaltene backmixing, fluctuation of process conditions, etc., to achieve high removal efficiency, The effect of reducing backmixing and improving removal efficiency

Active Publication Date: 2021-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the deasphalting towers used are empty towers (such as DEMEX process) or filled with certain fillers in the empty towers (such as ROSE process), so there are low separation efficiency and fluctuations in process conditions that easily lead to the return of heavy components such as asphaltenes. mixed problem

Method used

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  • Deasphalting device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Choose a crude oil with an asphaltenes content of 2%. Crude oil and n-pentane are mixed at a mass ratio of 1:1.5 to form a homogeneous mixture, then heated to 150° C., and passed into the deasphalting device 100 through the conveying section 121 of the feed distributor 120 . The residence time of the mixture in the deasphalting unit 100 was 15 minutes. The applied electric field strength is 1500V / cm.

Embodiment 2

[0082] A residuum was selected with an asphaltenes content of 17%. The residual oil and n-heptane are mixed at a mass ratio of 1:2 to form a homogeneous mixture, then heated to 150° C., and passed into the deasphalting device 100 through the conveying section 121 of the feed distributor 120 . The residence time of the mixture in the deasphalting unit 100 was 15 minutes. The applied electric field strength is 1500V / cm.

experiment example

[0088] The content of asphaltenes in the deasphalted oil obtained by the methods provided in Examples 1 and 2 and Comparative Examples 1 and 2 was detected. Record the results in the table below.

[0089] Table 1 Asphaltene content in deasphalted oil of each experimental group

[0090] experiment Asphaltene content in deasphalted oil (%) Example 1 0.05 Example 2 0.1 Comparative example 1 1 Comparative example 2 5.2

[0091] It can be seen from the above table that the embodiment provided by the application has a better effect on removing asphalt than the comparative example, and the asphaltene content in the obtained deasphalted oil is lower. After applying an electric field, the deasphalting of the raw oil can be improved. Efficiency, remove more than 90% of asphaltenes in raw oil.

[0092] In summary, the device provided by this application, by setting the discharge section of the distributor in the hollow cylindrical electrode, enab...

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Abstract

The invention relates to the technical field of petroleum processing, and provides a deasphalting device and a method, the deasphalting device comprises a tank body, a feeding distributor, a power line and a conductive hollow cylindrical electrode, the hollow cylindrical electrode is arranged in the tank body, the feeding distributor comprises a discharging section and a conveying section which are connected with each other, the discharging section is located in the hollow cylindrical electrode, the conveying section extends out of the tank body from the lower part of the tank body, a plurality of discharging holes are formed in the discharging section corresponding to the lower part of the hollow cylindrical electrode, the hollow cylindrical electrode is not in contact with the wall surface of the tank body and the feeding distributor, one end of the power line is connected with the hollow cylindrical electrode, and the other end of the power line extends out of the tank body. According to the deasphalting method, the deasphalting device provided by the invention is adopted for deasphalting treatment, and the method and the device have a relatively good effect of removing the asphalt in the raw oil.

Description

technical field [0001] The invention relates to the technical field of petroleum processing, in particular to a deasphalting device and method. Background technique [0002] Petroleum asphaltene is a heavy component in crude oil, which will have adverse effects on crude oil processing because of its large molecular weight and complex structure. In the process of petroleum refining, on the one hand, asphaltene is not easy to pyrolyze, and on the other hand, the pyrolysis products of asphaltene are easily condensed, resulting in the formation of a large amount of coke. In addition, most of the metals in crude oil exist in polar components such as asphaltenes, and these metal components will cause catalyst poisoning and deactivation during secondary processing. Therefore, the removal of heavy components such as asphaltene can optimize the processing technology of crude oil and increase the value of crude oil processing and utilization. [0003] At present, many studies have b...

Claims

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Application Information

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IPC IPC(8): C10G32/02
CPCC10G32/02C10G2300/206
Inventor 蒋兴家崔新安王雪申明周李春贤施振东赵星宇王敬楠
Owner CHINA PETROLEUM & CHEM CORP
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