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A kind of blended asphalt and preparation method thereof

A blending and asphalt technology, applied in the field of blending asphalt and its preparation, can solve the problems of poor index and unable to meet the requirements of petroleum asphalt index, and achieve the effect of broadening the source, enriching the asphalt production process and improving the added value.

Active Publication Date: 2020-07-07
SHANDONG CHAMBROAD PETROCHEMICALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the flash point of the blended asphalt soft component and the index after aging are poor, and the blended asphalt product index obtained after blending with deoiled asphalt cannot meet the index requirements of heavy traffic road petroleum asphalt

Method used

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  • A kind of blended asphalt and preparation method thereof
  • A kind of blended asphalt and preparation method thereof
  • A kind of blended asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The present invention also provides a preparation method of the blended asphalt, comprising: mixing deoiled asphalt, vacuum residue and petroleum asphalt, heating and stirring to obtain heavy traffic road petroleum asphalt.

[0029] Wherein, the heating temperature is preferably 100°C to 200°C, more preferably 130°C to 160°C; the heating and stirring time is preferably 20 to 200min, more preferably 30 to 120min; the heating and stirring is preferably at a high speed Stirring; the stirring speed is preferably 1000-2000r / min, more preferably 1000r / min.

[0030] The preparation method provided by the invention is simple, and the prepared blended asphalt meets the index requirement of JTG F40-2004, the road petroleum asphalt technical requirement of the Ministry of Communications.

Embodiment 1

[0034] Use deoiled asphalt (penetration at 25°C 20-40dmm, softening point 50°C-70°C), vacuum residue (penetration at 25°C 200-300dmm, softening point 20°C-40°C, flash point 260°C- 350°C) and base petroleum asphalt (25°C penetration 60-80dmm, softening point > 46°C, flash point 260°C-280°C, 10°C ductility > 150cm) at 150 cm according to the mass ratio of 2.5:2.5:5 After stirring at ℃ for 60 minutes, a well-mixed blended pitch was obtained, the properties of which are shown in Table 1.

[0035] The properties of the blended asphalt that table 1 embodiment 1 obtains

[0036]

[0037]

[0038] It can be seen from Table 1 that all indicators of blended asphalt after blending deoiled asphalt, vacuum residue and petroleum asphalt meet the technical requirements of 70#A grade asphalt in JTG F40-2004 of the Ministry of Communications.

Embodiment 2

[0040] Use deoiled asphalt (penetration at 25°C 0-20dmm, softening point 65°C-80°C), vacuum residue (penetration at 25°C 200-300dmm, softening point 20°C-40°C, flash point 260-350 ℃) and base petroleum asphalt (penetration at 25℃: 60-80dmm, softening point>46℃, flash point: 260℃-280℃, ductility>150cm at 10℃) according to the ratio of 2.4:4.6:3 at 150℃ for 60min Finally, a well-mixed blended asphalt is obtained, and its properties are shown in Table 2.

[0041] The properties of the blended asphalt that table 2 embodiment 2 obtains

[0042]

[0043]

[0044] It can be seen from Table 2 that all indicators of blended asphalt after blending deoiled asphalt, vacuum residue and petroleum asphalt meet the technical requirements of 70#A grade asphalt in JTG F40-2004 of the Ministry of Communications.

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Abstract

The invention provides blending asphalt obtained by blending deoiled asphalt, vacuum residue and petroleum asphalt in the mass ratio of (1-5): (1-5): (2-8). Compared with the prior art, the deoiled asphalt, the vacuum residue and the petroleum asphalt which cannot meet asphalt index requirements of (JTG F40-2004 heavy traffic asphalt grade A) are blended to obtain a qualified product (heavy traffic asphalt grade A). On the one hand, sources of asphalt raw materials are broadened, waxy crude oil can also be used as an asphalt raw material to obtain the deoiled asphalt as an asphalt blending rawmaterial; on the other hand, the asphalt production process is enriched, the unqualified vacuum residue is used as an asphalt blending raw material is fully used, and the added value of the vacuum residue is improved.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a blended asphalt and a preparation method thereof. Background technique [0002] Road construction is the foundation of national economic development, especially in densely populated or economically underdeveloped areas, roads play a vital role. With the rapid increase of modern vehicles and the increasing traffic load, the requirements for road pavement are becoming more and more stringent, while asphalt pavement is characterized by good driving comfort, low noise, smooth surface, no joints, short construction period, and maintenance and repair. The advantages of simplicity, recyclability, and suitable phase construction are dominant in the road construction system. As one of the indispensable and important materials for asphalt pavement, asphalt is an important support for the rapid development of the national economy. [0003] Petroleum asphalt is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00
CPCC10C3/005
Inventor 李启仲马韵升祁聪王贝张文慧陈梅梅
Owner SHANDONG CHAMBROAD PETROCHEMICALS CO LTD