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Processing method for producing lubricant base oil and liquid fuel by using inferior heavy oil

A lubricating oil base oil and processing method technology, which is applied in the field of lubricating oil base oil, can solve the problems of poor quality heavy oil, low separation precision, and affecting product quality, so as to reduce device start-up and shutdown, improve yield and product quality, Effect of reducing gas and coke yield

Active Publication Date: 2017-05-31
NORTH HUAJIN CHEM IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low separation accuracy, the non-ideal components in the raw materials cannot be effectively excluded from the hydrogenation reactor, resulting in a large load on the hydrogenation process and seriously affecting the quality of the product
[0009] To sum up, in order to efficiently transform inferior heavy oil into lubricating base oil, it is necessary to solve the problem that inferior heavy oil with high metal content and high carbon residue cannot be used as feedstock for fixed bed hydrogenation
And do not see the report of the related technology that can effectively solve these technical problems at present

Method used

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  • Processing method for producing lubricant base oil and liquid fuel by using inferior heavy oil
  • Processing method for producing lubricant base oil and liquid fuel by using inferior heavy oil
  • Processing method for producing lubricant base oil and liquid fuel by using inferior heavy oil

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0046] Example 2 of the present invention: VGO / VR=3:1 (m / m) mild hydroprocessing-catalytic cracking

[0047] Vacuum residual oil (referred to as VR) and vacuum gas oil (referred to as VGO) of a certain inferior crude oil are selected as the mixed feed for hydrotreating, and the mixing ratio of the two is VGO / VR=3:1 (m / m) ; Hydrotreating reaction conditions are temperature 390°C, pressure 9MPa, liquid hourly space velocity 1.0h -1 . The catalytic cracking experiment of hydrotreated oil was carried out on a small fixed fluidized bed reactor, using LBO-16 catalyst, the catalytic cracking reaction temperature was 500°C, the catalyst-to-oil ratio was 5, and the space velocity was 30h -1 . The yields of catalytic cracking dry gas, liquefied petroleum gas, gasoline, diesel and heavy oil were measured, and the amount of coke on the catalyst was analyzed. The distribution of catalytic cracking products is shown in Table 3.

[0048] Table 3 Product distribution wt% of catalytic crack...

Embodiment 3

[0050] Embodiment 3 of the present invention: Selective solvent deasphalting of residual oil-hydroprocessing-catalytic cracking

[0051] The vacuum residue VR of an inferior crude oil was selected as raw material, and solvent deasphalting was carried out with pentane as solvent to obtain light deasphalted oil LDAO and heavy deasphalted oil HDAO. The properties of deasphalted oil LDAO and HDAO are shown in Table 4.

[0052] Table 4 Properties of LDAO and HDAO

[0053]

[0054] LDAO and VGO are mixed according to a certain mass ratio of 1:1 as the feed for hydroprocessing (I), and the reaction conditions of hydroprocessing are temperature 370°C, pressure 10.5MPa, liquid hourly space velocity 1.0h -1 .

[0055] The product distribution after hydroprocessing (I) is shown in Table 4. The raw material A is VGO, and the raw material B is a mixture of LDAO and VGO at a mass ratio of 1:1.

[0056] The properties of some products after two kinds of raw materials and hydroprocessin...

Embodiment 4

[0066] Example 4 of the present invention: Selective solvent deasphalting-hydroprocessing-catalytic cracking-oil slurry reverse mixing hydroprocessing (II) raw material

[0067] A poor-quality vacuum residue VR was selected as raw material, and pentane was used as solvent for selective solvent deasphalting to obtain deasphalted oils LDAO and HDAO. LDAO and VGO are mixed according to the mass ratio of 1:1 and used as the feed for hydroprocessing (I). The reaction conditions of hydroprocessing (I) are 380°C, pressure 12.5MPa, liquid hourly space velocity 1.2h -1 .

[0068] The product distribution after hydroprocessing (I) is shown in Table 7. The raw material A is VGO, and the raw material B is a mixture of LDAO and VGO at a mass ratio of 1:1.

[0069] The properties of some products after two kinds of raw materials and hydroprocessing (I) are shown in Table 8.

[0070] Table 7 Hydrofining reaction product distribution

[0071]

[0072]

[0073] Table 8 Raw materials a...

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Abstract

The invention discloses a method for processing inferior heavy oil into lubricant base oil with a high viscosity index. The problem that inferior heavy oil with high metal content and high carbon residue content cannot serve as hydrogenation feed of a fixed bed is mainly solved. The method can be realized based on the existing production process of general refinery. The method disclosed by the invention comprises the following steps: performing selective solvent deasphalting and hydrotreatment on inferior heavy distillate or residual oil with high sulfur / nitrogen content, high metal content, asphaltene content or high carbon residue value, thereby obtaining a series of high-quality lubricant base oil products. The method disclosed by the invention has the effects of improving the liquid component yield, improving the product quality and reducing emission of environmental pollutants.

Description

technical field [0001] The invention relates to a method for processing low-quality heavy oil, in particular to a method for processing low-quality heavy oil into lubricating base oil with a high viscosity index. The method can be realized based on the existing production technology of general refineries. Background technique [0002] The trend of heavy crude oil in the world continues to intensify, and the proportion of low-quality and heavy crude oil processed by refineries continues to increase. How to process inferior raw materials into high value-added oil products is an urgent problem for refineries to solve. Inferior heavy oil is characterized by high content of colloids, asphaltenes, metals, sulfur, and nitrogen, and high viscosity. These characteristics of inferior heavy oil lead to difficult processing, low product yield and poor quality. Therefore, the efficient transformation of inferior heavy oil into high value-added petroleum products is the core of the deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/1037C10G2400/10
Inventor 袁博魏强许志明郑树松赵锁奇史权朱勇飞孙学文程璐徐春明
Owner NORTH HUAJIN CHEM IND GRP
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