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Method for producing high-octane gasoline by hydrocracking distillate oil of low-grade petroleum

A technology for high-octane gasoline and petroleum fractions, which is applied in the petroleum industry, hydrotreating process, and hydrocarbon oil treatment. low level problem

Inactive Publication Date: 2011-02-02
孙雪 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problems faced when dealing with inferior petroleum distillate oil—straight run distillate oil produced by primary processing of petroleum atmospheric and vacuum distillation, light cycle oil produced by catalytic cracking unit, distillate oil produced by delayed coking unit, and light deoiled oil from solvent deasphalting Difficulties, one is because the bicyclic or tricyclic compounds are not fully cracked, resulting in low cetane number of light diesel oil fraction, it is difficult to be used as a blending component of commercial light diesel oil; the other is because the bicyclic or tricyclic compounds are not fully cracked, resulting in naphtha The content of aromatics in the oil fraction is low, which makes the octane number too low to be used as a blending component of commercial gasoline

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Heating the petroleum inferior distillate oil raw material 1 to 320° C., and mixing it with hydrogen under a reaction pressure of 10.0 MPa. The mixed hydrogen oil volume ratio is: 1000:1 to obtain a feed mixture;

[0038] (2) Make the above-mentioned feed mixture pass through the bed layer consisting of the first catalyst, the volume space velocity is 0.5hr -1 , removing sulfur and nitrogen impurities in the feed mixture, and partially saturating the bicyclic or tricyclic compounds in the feed mixture to obtain refined oil;

[0039] (3) Make the above-mentioned refined oil and hydrogen mixture pass through the bed layer composed of the second catalyst, the volume space velocity is 0.6hr -1 , with a reaction temperature of 400°C and a reaction pressure of 10 MPa, the bicyclic or tricyclic compounds with side chains in the refined oil are cracked to obtain a reaction product rich in monocyclic aromatic hydrocarbons;

[0040] (4) cooling the above reaction product to ...

Embodiment 2

[0045] (1) Heating the low-quality petroleum distillate raw material 2 to 300° C., and mixing it with hydrogen under a reaction pressure of 16.0 MPa. The mixed hydrogen-oil volume ratio is: 800:1 to obtain a feed mixture;

[0046] (2) Make the above-mentioned feed mixture pass through the bed layer consisting of the first catalyst, the volume space velocity is 1.0hr -1 , removing sulfur and nitrogen impurities in the feed mixture, and partially saturating the bicyclic or tricyclic compounds in the feed mixture to obtain refined oil;

[0047] (3) Make the above-mentioned mixture of refined oil and hydrogen pass through the bed layer composed of the second catalyst, the volume space velocity is 1.0hr -1 , with a reaction temperature of 390°C and a reaction pressure of 16 MPa, the bicyclic or tricyclic compounds with side chains in the refined oil are cracked to obtain a reaction product rich in monocyclic aromatic hydrocarbons;

[0048] (4) cooling the above reaction product to...

Embodiment 3

[0053] (1) Heating the low-quality petroleum distillate raw material 3 to 300° C., and mixing it with hydrogen gas at a reaction pressure of 12 MPa. The mixed hydrogen-oil volume ratio is 1500:1 to obtain a feed mixture;

[0054] (2) Make the above-mentioned feed mixture pass through the bed layer consisting of the first catalyst, the volume space velocity is 0.8hr -1 , removing sulfur and nitrogen impurities in the feed mixture, and partially saturating the bicyclic or tricyclic compounds in the feed mixture to obtain refined oil;

[0055] (3) Make the above-mentioned refined oil and hydrogen mixture pass through the bed layer composed of the second catalyst, the volume space velocity is 1.8hr -1 , with a reaction temperature of 410°C and a reaction pressure of 12 MPa, the bicyclic or tricyclic compounds with side chains in the refined oil are cracked to obtain a reaction product rich in monocyclic aromatic hydrocarbons;

[0056] (4) cooling the above reaction product to 40°...

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Abstract

The invention relates to a method for producing high-octane gasoline by hydrocracking distillate oil of low-grade petroleum, which belongs to the technical field of petroleum refining. The method is as follows: carrying out hydrocracking ring opening and cracking reaction on distillate raw materials including straight-run distillate oil produced by atmospheric and vacuum distillation one-time processing production of the petroleum, light cycle oil produced by a catalytic cracking device, the distillate oil produced by a delayed coking device, light deasphalted oil which removes asphalt in solvent and the like of low-grade petroleum in the presence of hydrogen partial pressure and a bifunctional catalyst, and then producing blended components of the high-octane gasoline which is rich in mononuclear aromatics and the research octane number RON of 80-96, wherein the distillation range of the distillate raw materials is 160-450 DEG C. The invention provides a brand new way for upgrading the quality of the gasoline and diesel to the standard which is equivalent to European Union IV (the sulfur content in the finished product gasoline is below 50ppm, and the sulfur content in the diesel is below 50ppm) and European Union V (the sulfur content in the finished product gasoline is below 10ppm, and the sulfur content in the diesel is below 30ppm).

Description

technical field [0001] The invention relates to a method for producing high-octane gasoline by hydrocracking inferior petroleum distillate oil, belonging to the technical field of petroleum refining. Background technique [0002] At present, the known hydrocracking oil refining process is a kind of heavy petroleum distillate as raw material, in the presence of hydrogen partial pressure and bifunctional catalyst, through hydrocracking reaction, to produce high-quality light oil products (such as naphtha , jet fuel, low freezing point diesel, etc.) for the purpose of refining process. Hydrocracking is an important process for refineries to produce clean fuels. [0003] One of the target products produced by the known hydrocracking refining process is naphtha. Due to the low octane number (RON=60-75), hydrocracked naphtha can not be used as a blending component of commercial gasoline, but as a raw material for ethylene cracking or reforming equipment for advanced processing. ...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 孙雪杜陕君王于杰
Owner 孙雪
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