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Treatment method for inferior heavy oil and residual oil

A treatment method and low-quality heavy oil technology, which is applied in the treatment of hydrocarbon oil, hydrogenation treatment process, petroleum industry, etc., can solve the problems of difficult to become asphalt products, increased bed pressure drop, waste of resources, etc., to reduce production and operation costs , Inhibiting coke formation and prolonging the start-up period

Active Publication Date: 2007-10-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has the following problems. One is that the catalytic oil slurry contains catalytic cracking catalyst powder, which is easily carried into the deasphalted oil through solvent extraction. After DAO is sent to the fixed bed hydrogenation unit, the catalyst powder is easily deposited on the catalyst bed. The second is that the asphalt removed by the solvent deasphalting device is not well utilized, and this part of the component is difficult to become asphalt products, and can only be used as asphalt blending material or fuel oil , resulting in a waste of resources

Method used

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  • Treatment method for inferior heavy oil and residual oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1

[0041] This experiment investigates the property change of deasphalted oil after solvent extraction when adding or not adding suspended bed hydrogenation tail oil to residual oil raw material.

[0042] project

Embodiment 2 and comparative example 2

[0044] This experiment illustrates the situation that the DAO obtained in Example 1 and Comparative Example 1 is subjected to fixed-bed hydroprocessing.

[0045] The fixed-bed hydrogenation catalysts used in the test are CEN, FZC series hydrodemetallization catalysts produced by the pilot base of Fushun Petrochemical Research Institute, ZTN, ZTS series hydrodenitrogenation, ZTS series produced by Qilu Petrochemical Company No. Hydrodesulfurization catalyst. The sequence of catalyst loading is hydrodemetallization, hydrodesulfurization and hydrodenitrogenation catalysts. The hydrodemetallization catalysts used in this test are CEN-5, CEN-6; the protective agents are CEN-2, CEN-4, FZC-16 (transitional protective agent); the hydrodesulfurization catalysts ZTS-01, ZTS-02 , ZTS-03; Hydrodenitrogenation catalyst ZTN-01. The packing volume ratio between each catalyst is:

[0046] CEN-2: FZC-16: CEN-4: CEN-5: CEN-6: ZTS-01: ZTS-02: ZTS-03: ZTN-01 = 1: 1.25: 1.5: 2.62: 7.8: 6.63: 0....

Embodiment 3 and comparative example 3

[0051] This test illustrates the situation that the hydrogenated tail oil of embodiment 2 and comparative example 2 carries out the FCC test on the small-scale riser catalytic cracking unit, because the hydrogenated tail oil properties of embodiment 2 and comparative example 2 are not very different, so only use The hydrogenated tail oil in Example 2 was taken as an example for FCC treatment. The FCC test device has a processing capacity of 1kg / h and adopts a cycle reaction-regeneration working mode. The catalytic cracking catalyst is CHV-1 catalyst produced by Changling Refinery and Chemical Zongshi Catalyst Factory.

[0052] serial number

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Abstract

The invention discloses a process for treating inferior heavy oil and residual oil comprising the following steps: loading heavy oil and petroleum residue into a solvent extraction apparatus, charging the obtained deasphalted oil into a fixed bed for hydrotreatment, entering the obtained tail oil into a catalytic cracking device, loading part or total slurry oil and de-oiled asphalt into a floating bed hydrogenation unit, separating the outcome yield to obtain lightweight fraction and untransformed tail oil, which is circulated to the solvent extraction device.

Description

technical field [0001] The present invention relates to a method for producing light distillate oil from inferior heavy oil or residual oil, especially a method for producing light distillate oil by organically combining solvent deasphalting, fixed bed hydrotreating, catalytic cracking and suspension bed hydrocracking processes . Background technique [0002] The combination of fixed bed hydrogenation and RFCC is currently a widely used method for lightening heavy oil or residual oil. Fixed-bed residual oil hydrotreating can remove most of the residual carbon and S, N and other heteroatoms in the residual oil. The product quality is good, and it can directly enter the FCC unit to produce light oil in large quantities, and the economic benefits are extremely considerable. However, the traditional fixed-bed hydrogenation technology for residual oil is difficult to apply to the processing of low-quality residual oil raw materials with high metal and residual carbon content bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/04
Inventor 蒋立敬王军李鹤鸣贾丽贾永忠
Owner CHINA PETROLEUM & CHEM CORP
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