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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, unused asphalt, and increased bed pressure drop, so as to suppress coke formation, The effect of prolonging the start-up period and avoiding blockage

Active Publication Date: 2005-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • 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 changes in the properties 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 residual oil raw materials are 76wt% and 80wt%, respectively, the DAO n-heptane insolubles are 0, and the content of Ni and V is low, which is an excellent raw material for fixed-bed hydrotreating equipment. .

[0040] Item

Embodiment 3～4

[0042] This experiment illustrates the fixed bed hydrotreating of the DAO obtained in Examples 1 and 2.

[0043] The fixed-bed hydrogenation catalyst used in the test is the CEN and FZC series of hydrodemetalization catalysts produced by the pilot plant of Fushun Petrochemical Research Institute, and the ZTN and ZTS series of hydrodenitrogenation catalysts produced by the First Fertilizer Plant of Qilu Petrochemical Company. Hydrodesulfurization catalyst. The order of catalyst loading is hydrodemetalization, hydrodesulfurization, and hydrodenitrogenation catalyst. The hydrodemetalization catalysts used in this experiment are CEN-5 and CEN-6; the protective agents are CEN-2, CEN-4, FZC-16 (transition protective agent); the hydrodesulfurization catalysts ZTS-01, ZTS-02 , ZTS-03; Hydrodenitrogenation catalyst ZTN-01. The filling 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:...

Embodiment 5～6

[0049] This test illustrates the FCC test of the hydrogenated tail oil of Example 3 and Example 4 on a small riser catalytic cracking unit. The catalytic cracking test device has a processing capacity of 1kg / h and adopts a cyclic reaction-regeneration working mode. The catalytic cracking catalyst is CHV-1 catalyst produced by Changling Petroleum Refining and Chemical Total Stone Catalyst Plant.

[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, in particular to a method for organically combining solvent deasphalting, fixed bed hydrotreating, catalytic cracking and suspended bed hydrocracking processes to produce light distillate oil . Background technique [0002] Hydrogenation is currently a widely used technical route for upgrading heavy and residual oil to produce heavy oil FCC raw materials. Among the existing residual oil hydro-upgrading methods, fixed-bed residual oil hydroprocessing is the most mature technical method. [0003] Fixed-bed residual oil hydroprocessing 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 residue fixed-bed hydrogenation technology is difficult to apply to the processing of inferior residue raw materials with highe...

Claims

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Application Information

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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
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