A kind of low-grade high-grade road asphalt and its preparation method
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
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Embodiment 1
[0024] Add 3.84% (referring to the mass ratio of catalytic oil slurry to atmospheric residue, the same below) of catalytic oil slurry to the atmospheric residue obtained by mixing Indonesian Oxi crude oil - Libyan Sirtiga crude oil (3:2) , and enter the vacuum distillation tower together to obtain vacuum residue.
[0025] Among them, the aromatics content in the catalytic oil slurry is greater than 50%, and the aromatics content of each batch of catalytic oil slurry fluctuates. You can choose the catalytic oil slurry from Maoming Branch, whose aromatics content is generally above 50%, the same below.
[0026] The temperature of the catalytic oil slurry entering the tower is 330-350°C, the operating pressure of the vacuum distillation tower is 95-100kpa, and the temperature at the bottom of the tower is 360-380°C. Since the vacuum residue required for each tank of blended asphalt generally needs to be continuously processed for 24 hours to meet the supply, and during such a lon...
Embodiment 2
[0032] 4.15% catalytic oil slurry is added to the atmospheric residue obtained by mixing Indonesian Oxi crude oil-Libyan Sirtiga crude oil (2:3), and enters the vacuum distillation tower together to obtain vacuum residue.
[0033] Among them, the content of aromatics in the catalytic oil slurry is greater than 50%.
[0034] The temperature of the catalytic oil slurry entering the tower is 330-350°C, the operating pressure of the vacuum distillation tower is 95-100kpa, and the temperature at the bottom of the tower is 360-380°C.
[0035] This vacuum residue is mixed with Iranian heavy crude oil-Iranian Sorus crude oil (1:1) and vacuum residue obtained from Saudi light crude oil through propane deasphalting process. The asphalt was blended at a ratio of 40:38:22 to produce road asphalt, and the results are shown in Table 1. The asphalt meets the standard of No. 50 Class A road asphalt.
[0036] Among them, the vacuum residue obtained by mixing Iranian heavy crude oil-Iranian S...
Embodiment 3
[0039] Add 1.0% catalytic oil slurry to the atmospheric residue obtained by mixing Canadian AWB crude oil-Iranian Borogen crude oil (1:1), and enter the vacuum distillation tower together to obtain vacuum residue.
[0040] Among them, the content of aromatics in the catalytic oil slurry is greater than 50%.
[0041] The temperature of the catalytic oil slurry entering the tower is 330-350°C, the operating pressure of the vacuum distillation tower is 95-100kpa, and the temperature at the bottom of the tower is 360-380°C.
[0042] This vacuum residue is blended with the vacuum residue obtained from Saudi medium crude oil and the deoiled asphalt obtained from the vacuum residue of Oman crude oil through propane deasphalting process in the ratio of 74.6:12.8:12.6 to produce road asphalt , the results are shown in Table 1. The asphalt meets the standard of No. 50 Class A road asphalt.
[0043] Among them, the vacuum residue obtained from Saudi medium crude oil is unimproved hard ...
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