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Novel method for obtaining concoction soft component of high-grade road asphalt

A technology for road asphalt and soft components, applied in the petrochemical field, can solve the problem of difficult utilization of deoiled hard asphalt, and achieve the effects of improving the utilization rate and added value, ensuring the operating rate, and improving economic benefits.

Inactive Publication Date: 2013-09-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the existing solvent deasphalting process is difficult to use deoiled hard asphalt, and improve the heavy oil processing process

Method used

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  • Novel method for obtaining concoction soft component of high-grade road asphalt
  • Novel method for obtaining concoction soft component of high-grade road asphalt
  • Novel method for obtaining concoction soft component of high-grade road asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0026]Using furfural as the extraction solvent, heat furfural 1 to 65-75°C by means of steam or heat exchange, and enter from the upper part of the extraction tower 3 after metering. After metering, it is carried out from the lower part of the extraction tower, and the two are reversely contacted in the extraction tower for liquid-liquid extraction. The operating pressure of the extraction tower is normal pressure (gauge pressure), 0.4Mpa (gauge pressure) and 0.9Mpa (gauge pressure), the extraction temperature is respectively selected at 65°C, 75°C and 80°C, and the ratio of agent to oil is 1.5: 1 (mass), 2.7:1 (mass) and 2.0:1 (mass). The tower top raffinate 4 is distilled and separated in the raffinate separation tower 5, the furfural solvent 6 recovered at the top of the tower, and the raffinate oil 7 is obtained at the bottom of the tower; the tower bottom raffinate 8 is distilled and separated in the raffinate separation tower 9 , the furfural solvent 10 recovered at the...

Embodiment 4

[0028] Extraction solvent is sulfolane, and operating process is with embodiment 1~3, and extraction condition is normal pressure (gauge pressure), and extraction temperature is 75 ℃, and agent-oil ratio is 1.7: 1 (quality), extracts the yield of oil and nature see Figure 4 .

Embodiment 5

[0030] Extraction solvent is N-formylmorpholine, and operating process is with embodiment 1~3, and extraction condition is: operating pressure 0.6Mpa (gauge pressure), and extraction temperature is 80 ℃, and agent-oil ratio is 1.5: 1 (mass ), the yield and properties of the extracted oil are shown in Figure 4 .

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Abstract

The invention provides a method for obtaining the concoction soft component of high-grade road asphalt, which comprises the following steps that: deasphalted oil produced by a solvent deasphalting process enters an extraction tower from the lower part of the extraction tower, a solvent enters the extraction tower from the upper part of the extraction tower, and the deasphalted oil and the solvent contact adversely in the extraction tower for carrying out extraction; raffinate oil is obtained after raffinate extracted from the top of the extraction tower is separated from the solvent; and extract oil is obtained after an extract extracted from the bottom of the extraction tower is separated from the solvent, and is used as the concoction soft component of the high-grade road asphalt. The invention can solve the problem that the deoiled hard asphalt of the solvent deasphalting process is difficult to utilize, and makes full use of the deoiled hard asphalt with low additional value to produce the high-grade road asphalt with high additional value; and meanwhile, the invention can improve the property of the deasphalted oil and provides a raw material with better performance for a subsequent processing process.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and mainly relates to a method for obtaining high-grade road asphalt blended soft components from deasphalted oil by using a solvent extraction process. Background technique [0002] Solvent deasphalting process is one of the important means of secondary processing of heavy oil, and the processed raw material is generally vacuum residue or atmospheric residue of inferior heavy oil. This process can selectively remove heavy metals, colloids and asphaltenes in residual oil that are harmful to secondary processing, and provide better quality deasphalted oil (also known as demetallized oil) for downstream processing. Solvent deasphalting process not only obtains deasphalted oil with low metal and low carbon residue, but also by-produces a part of deoiled hard asphalt with low oil content, high softening point, high heavy metal content, low penetration and low added value. But because of its poo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/06
Inventor 任满年杜平安曹发海李彬杨书显刘可非应卫勇张锋李中新董力军齐文瑞杨萍田英爱况敏杜瑞华梁晓斌张新民岳利梅
Owner CHINA PETROLEUM & CHEM CORP
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