Method for processing inferior crude oil through combined processes

A low-quality crude oil, combined process technology, applied in hydrotreating process, petroleum industry, processing hydrocarbon oil and other directions, can solve the problems of low liquid yield and complex process flow, achieve quality improvement, oil slurry yield reduction, operation The effect of cycle improvement

Active Publication Date: 2011-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method organically combines the catalytic cracking process, extraction process and hydrogenation process

Method used

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  • Method for processing inferior crude oil through combined processes
  • Method for processing inferior crude oil through combined processes
  • Method for processing inferior crude oil through combined processes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0062] The examples illustrate the process and effect of the combined process provided by the present invention for treating inferior heavy oil raw materials.

[0063] The raw material oil A of vacuum residual oil is used as the raw material. After preheating, the raw material A enters the middle or upper part of the extraction tower of the solvent deasphalting medium-sized device, and enters the lower part of the extraction tower with butane as the solvent. The raw material and solvent are extracted Countercurrent contact extraction is carried out in the tower, deasphalted oil with a large amount of solvent flows out from the top of the extraction tower, and deoiled asphalt with a small amount of solvent is discharged from the bottom of the extraction tower. Solvents are recovered and reused from deoiled bitumen and deasphalted oil to yield deasphalted oils, gums and bitumens. The operating conditions of the extraction tower are shown in Table 3.

[0064] The obtained deasph...

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Abstract

The invention relates to a method for processing inferior crude oil through combined processes, which comprises the following steps of: carrying out solvent deasphalting to an inferior crude heavy oil to obtain deasphalted oil; preheating the deasphalted oil, entering a first reaction zone of a catalytic conversion reactor, mixing either oil gas produced by the reaction or a spent catalyst with alightweight crude oil, entering a second reaction zone for a cracking reaction, a hydrogen transfer reaction and an isomerization reaction, separating solids and liquids, further separating the reaction products into dry gas, liquefied gas, gasoline, diesel and catalytic wax oil, and cycling the spent catalyst through steam stripping and regeneration, wherein the reaction conditions of the first reaction zone and the second reaction zone are sufficient to obtain the catalytic wax oil product occupying 12-60 wt% of the crude oil through the reactions; hydrogenating the catalytic wax oil to obtain hydrogenated catalytic wax oil, and introducing to the catalytic conversion reactor to further react to obtain a lightweight fuel oil product. The method provided by the invention can be used for furthest producing propylene and lightweight fuel oil especially high-octane petrol from inferior crude oil, and thus, the efficient utilization of oil resources is realized.

Description

technical field [0001] The invention belongs to the catalytic conversion method of hydrocarbon oil, more specifically, it combines extraction process, catalytic cracking process and hydrogenation process to process low-quality raw material oil and convert it into a large amount of light fuel oil. Background technique [0002] The quality of crude oil is getting worse with the continuous increase of crude oil extraction, mainly manifested in the increase of crude oil density, viscosity, heavy metal content, sulfur content, nitrogen content, colloid and asphaltene content and acid value. At present, the price difference between low-quality crude oil and high-quality crude oil is also increasing with the shortage of oil resources, resulting in more and more attention to low-priced low-quality crude oil extraction and processing methods, that is, to increase as much as possible from low-quality crude oil. The yield of light oil has brought huge challenges to traditional crude oi...

Claims

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Application Information

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IPC IPC(8): C10G67/04C10G69/04
Inventor 张执刚许友好谢朝钢王子军张久顺王翠红陈昀朱根权龚剑洪
Owner CHINA PETROLEUM & CHEM CORP
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