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Low-strength and high-grade road asphalt and preparation method thereof

A road asphalt, high-grade technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of crude oil type dependence, poor anti-aging performance, etc., to improve the use value, improve performance, and improve the poor anti-aging performance Effect

Active Publication Date: 2014-02-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-grade high-grade road asphalt, the low-grade high-grade road asphalt can solve the problem of dependence on the type of crude oil, and can also solve the poor aging resistance of high-grade road asphalt produced by catalytic oil slurry in the prior art problems, low-value-added catalytic oil slurry can be used to produce high-value-added low-grade high-grade road asphalt

Method used

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  • Low-strength and high-grade road asphalt and preparation method thereof
  • Low-strength and high-grade road asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 3.84% (referring to the mass ratio of catalytic oil slurry to atmospheric residual oil, the same below) of catalytic oil slurry into atmospheric residual oil obtained by mixing Indonesian Oxi crude oil and Libyan Sirtiga crude oil (3:2). , enter the vacuum distillation column together to obtain vacuum residue.

[0025] Among them, the content of aromatic hydrocarbons in the catalytic oil slurry is more than 50%, and the content of aromatic hydrocarbons in each batch of catalytic oil slurry fluctuates. The catalytic oil slurry of Maoming Branch can be selected, and its aromatic hydrocarbon content is generally above 50%, the same below.

[0026] The inlet temperature of the catalytic oil slurry is 330~350℃, the operating pressure of the vacuum distillation column is 95~100kpa, and the temperature at the bottom of the tower is 360~380℃. Since the vacuum residue required for each tank of asphalt blending generally needs to be continuously processed for 24 hours to meet...

Embodiment 2

[0032] 4.15% of the catalytic oil slurry is added to the atmospheric residual oil obtained by mixing Indonesian Oxi crude oil and Libyan Sirtija crude oil (2:3), and enters the vacuum distillation tower together to obtain vacuum residual oil.

[0033] The content of aromatic hydrocarbons in the catalytic oil slurry is greater than 50%.

[0034] The inlet temperature of the catalytic oil slurry is 330~350℃, the operating pressure of the vacuum distillation column is 95~100kpa, and the temperature at the bottom of the tower is 360~380℃.

[0035] This vacuum residue is mixed with the vacuum residue obtained by mixing Iranian heavy crude oil - Iran Soluz crude oil (1:1), and the deoiled oil obtained from the vacuum residue of Saudi light crude oil through propane deasphalting process The asphalt was blended in the ratio of 40:38:22 to produce road asphalt. The results are shown in Table 1. This bitumen meets the standards of No. 50 Grade A road asphalt.

[0036] Among them, the ...

Embodiment 3

[0039] 1.0% of the catalytic oil slurry is added to the atmospheric residue obtained by mixing AWB crude oil from Canada and Bairrogan crude oil from Iran (1:1), and enters the vacuum distillation tower together to obtain vacuum residue.

[0040] The content of aromatic hydrocarbons in the catalytic oil slurry is greater than 50%.

[0041] The inlet temperature of the catalytic oil slurry is 330~350℃, the operating pressure of the vacuum distillation column is 95~100kpa, and the temperature at the bottom of the tower is 360~380℃.

[0042] This vacuum residue is blended with the vacuum residue obtained from Saudi medium crude oil and the deoiled asphalt obtained by propane deasphalting process from the vacuum residue of Oman crude oil in a ratio of 74.6:12.8:12.6 to produce road asphalt , and the results are shown in Table 1. This bitumen meets the standards of No. 50 Grade A road asphalt.

[0043] Among them, the vacuum residue obtained from Saudi medium crude oil is an unim...

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Abstract

The invention discloses low-strength and high-grade road asphalt. The low-strength and high-grade road asphalt comprises the following components in parts by weight: 25 to 75 parts of vacuum residue, and 25 to 75 parts of one or more of deoiled asphalt, extract oil from solvent refining, and unimproved hard vacuum residue, wherein the vacuum residue is the vacuum residue prepared by introducing catalytic oil into the bottom of an atmospheric distillation column and then transferring into a reduced-pressure distillation column together with atmospheric residue to improve by reduced-pressure distillation. The invention also discloses a preparation method of the low-strength and high-grade road asphalt. By adopting the low-strength and high-grade road asphalt, the problem due to the dependence on types of crude oil can be solved, and the problem of the prior art that the high-grade road asphalt produced by catalytic slurry oil is poor in ageing resistance also can be solved; the low-strength and high-grade road asphalt with high additional value can be produced through the catalytic slurry oil with low additional value. In addition, the preparation method is simple in process and low in cost.

Description

technical field [0001] The invention belongs to the technical field of road asphalt, in particular to a low-grade high-grade road asphalt and a preparation method thereof. Background technique [0002] In recent years, with the rapid increase in the traffic volume of highway transportation in our country, the phenomenon of overload and heavy load is serious, and the damage of the pavement structure is increasing day by day. The lack of high temperature stability of asphalt concrete forms rutting, which is one of the main disease forms of high-grade highway asphalt pavement in my country. To solve this problem, highway departments tend to use high-quality low-grade asphalt, which includes the No. 50 road petroleum asphalt formulated in the Technical Specification for Construction of Highway Asphalt Pavement JTG F40-2004 of the Ministry of Communications. [0003] Chinese Invention Patent Application Publication CN201010511480.X involves heating No. 50 hard petroleum asphalt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08L95/00
Inventor 欧晔钟向宏华献君许楚荣马毅胜骆新平何靖斌许宏刘跃委李国民
Owner CHINA PETROLEUM & CHEM CORP
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