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Conversion method for low-grade heavy and residual oil

A residual oil and light technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve problems such as difficult to become asphalt products, increased bed pressure drop, unused asphalt, etc., to suppress coke formation , prolong the start-up period, and reduce the metal content

Active Publication Date: 2006-12-20
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, through solvent extraction, some catalyst powder is still carried in the deasphalted oil (DAO), after DAO is sent to the fixed bed hydrogenation unit, Catalyst powder is easy to deposit on the catalyst bed, causing the pressure drop of the bed to rise and clogging; 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, causing waste of resources

Method used

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  • Conversion method for low-grade heavy and residual oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～2

[0039] This experiment investigates the property change of deasphalted oil obtained from two residual oil raw materials under different solvent extraction conditions. The data results show that the DAO yields of the two residue raw materials are 76wt% and 80wt%, respectively, the DAO n-heptane insolubles are all 0, and the content of Ni and V is low, which is an excellent raw material for fixed bed hydrotreating unit .

[0040] project

Embodiment 3～4

[0042] This experiment illustrates the situation that the DAO obtained in Examples 1 and 2 is subjected to fixed-bed hydroprocessing.

[0043] 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:

[0044] 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: 0.69: 0.87:11.

[0...

Embodiment 5～6

[0049] This test illustrates that the hydrogenated tail oils of Examples 3 and 4 are subjected to FCC tests on a small-scale riser catalytic cracking unit. The catalytic cracking test unit 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.

[0050] serial number

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Abstract

The present invention discloses a sort of method for converting the inferior heavy oil and residual oil, the deasphalted oil and deoiled asphalt is fractionated by the solvent from the raw material of heavy oil and residual oil, wherein the deasphalted oil is delivered to the hydrotreating arrangement of the fixed bed, modifies the matter with the reaction of hydrogen and hydrogenation catalysts, the separated production includes the lightweight cut fraction and hydrocracking tail oil, the hydrocracking tail oil is delivered to the catalytic cracking unit, and cracked with the function of the cracking catalyst, the separated production includes light-weighted cut fraction, heavy recycle oil and slurry oil. The deoiled asphalt which is fractionated by solvent and catalytic slurry oil are delivered to the hydrogenation equipment of the suspension bed together, and are farther produced to get various of light-weighted cut fractions with the function of hydrogen and decentralized energizing agent. This method can effectively reduce the operation severity of the hydrotreating arrangement in the fixed bed and the hydrogenation plant in the suspension bed, and can improve the creation rate and the quality.

Description

technical field [0001] The invention relates to a method for producing light distillate oil from inferior heavy and 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] Hydrogenation is currently a widely used technical route for heavy and residual oil upgrading to produce heavy oil FCC feedstock. Among the existing residual oil hydro-upgrading methods, fixed-bed residual oil hydrotreating is the most mature technical method. [0003] Fixed-bed residual oil hydrotreating has the characteristics of good product quality and mature technology. In the field of residual oil hydrogenation, its industrial production capacity occupies a high share. However, the traditional fixed-bed hydrogenation technology for residual oil is difficult to apply to the processing of low-quality residual oil raw materia...

Claims

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Application Information

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