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Inferior residual oil solvent extraction apparatus and processing technology thereof

An extraction device and solvent technology, applied in the field of inferior residual oil solvent extraction device, can solve problems such as out of control and affecting the quality of deasphalted oil, and achieve the effects of low energy consumption, prolonged residence time, and extended service life

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These asphaltenes will be deposited in large quantities at pipeline bends, valves, control points of constant pressure equipment, and solvent tanks. When the accumulation reaches a certain amount, the entire extraction system will be out of control, and it will also seriously affect the quality of deasphalted oil.

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  • Inferior residual oil solvent extraction apparatus and processing technology thereof
  • Inferior residual oil solvent extraction apparatus and processing technology thereof
  • Inferior residual oil solvent extraction apparatus and processing technology thereof

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with specific embodiments, but it should be understood that the specific embodiments herein are only specific examples and do not constitute limitations on the protection scope of the present invention.

[0043] The invention is a method for removing asphaltenes from inferior residual oil and improving the quality of deoiled asphalt. This residue is typically the leftover product from the distillation of crude oil used on a large scale in refineries. This residual oil has poor aging resistance and high asphaltene content. At the extraction temperature, the residual oil is miscible with the solvent.

[0044] As the residual oil contains a large amount of asphaltenes, a large amount of asphaltene will be deposited at the corners of the pipeline and the control points of the constant pressure equipment. When the accumulation reaches a certain amount, the entire extraction system will be out of control,...

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Abstract

The invention discloses an inferior residual oil solvent extraction apparatus and a processing technology thereof. The solvent extraction technology is characterized in that residual oil is extracted by using a solvent with several times of its volume and separated to obtain most asphaltene, secondary extraction on light components are carried out by using another solvent, asphaltene cannot be introduced into a subsequent pipeline, and deasphalted oil quality can be guaranteed. Multilayer filling materials are arranged on an extraction tower, multilayer filling materials are arranged in the extraction tower, increasing of asphaltene by following with a mixing solution can be avoided, asphaltene is retained in the extraction tower, introduction of the asphaltene into the subsequent pipeline can be avoided, and normal work of constant pressure device is influenced.

Description

technical field [0001] The invention relates to a low-quality residual oil solvent extraction device and a processing technology thereof. Background technique [0002] Solvent deasphalting technology is to extract the oil in the petroleum atmospheric residue or vacuum residue, and remove the asphalt in the residue. Deasphalted oil is mainly used to produce lubricating oil base oil or as a raw material for catalytic cracking or hydrocracking (not limited to) subsequent processing. The bitumen removed can be used as road asphalt, construction asphalt or fuel. [0003] Both OPEC and non-OPEC countries have increased supplies of heavy crude over the past 10 years. In the four years from 2000 to 2004 alone, non-OPEC countries provided a 23% increase in the amount of heavy oil covering high-acid and high-sulfur crude oil to the market, while the supply of light crude oil decreased by 10%. The deterioration trend of global crude oil resources is changing from high sulfur to heavy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/04
Inventor 范思远宁爱民高鲜会陈闯陈保莲张静
Owner CHINA PETROLEUM & CHEM CORP
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