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Preparation method of SBS modified asphalt

A technology of modified asphalt and asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve problems such as changes in service performance and product index attenuation, and achieve high production efficiency, superior high and low temperature performance, and improved utilization.

Pending Publication Date: 2019-07-02
新疆交建路友道路材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a preparation method of SBS modified asphalt, which uses Karamay 90# asphalt and Tahe Petrochemical 60# asphalt as base asphalt, and prepares a process that can solve the problem of long-distance and long-term heating and transportation of asphalt Modified asphalt, which has the problems of product index attenuation and performance change, the modified asphalt has superior high and low temperature performance, and can be better used in Xinjiang and areas similar to Xinjiang's climatic conditions and geographical environment. It has strong practicability. High production efficiency and effective energy saving

Method used

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  • Preparation method of SBS modified asphalt
  • Preparation method of SBS modified asphalt
  • Preparation method of SBS modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Select Karamay 90# asphalt and Tahe Petrochemical 60# asphalt for compound test,

[0027] 1. Choose four blending ratios

[0028] Asphalt material Scale 1 Scale 2 Scale 3 Scale 4 Tahe Petrochemical 60# Asphalt50％60％70％80％ 克拉玛依90# Asphalt 50％40％30％20％

[0029] 2. Carry out production test on the asphalt with the above four blending ratios, and the characteristics of the modified asphalt obtained are shown in the following table:

[0030]

[0031]

[0032] Through the above production test, the combination ratio of Karamay 90# asphalt and Tahe Petrochemical 60# asphalt is selected to be 30%-40%: 60%-70%;

[0033] 3. Perform on-site verification production through two production processes: mother liquor method and conventional grinding method:

[0034] Table 1

[0035]

[0036] Through the simultaneous sampling data comparison of the tank body at the start of the vehicle, the 48h project test data comparison, eliminating the influence of instrument deviation and manua...

Embodiment 2

[0042] Embodiment 2: It mainly includes the following steps:

[0043] (1) Raw material processing: select Karamay 90# asphalt and Tahe Petrochemical 60# asphalt and heat them to 150°C respectively, and mix according to the weight percentage of 30%:70%, and stir and mix for 3 hours at a temperature of 157°C. The stirring speed is 55 revolutions / min.

[0044] (2) Add co-solvent: After step 1 is completed, add co-solvent, the co-solvent is the reduced second and third-line anti-oxidation asphalt solubilizing extender, and stir and mix uniformly, the added amount of the co-solvent It is 12% of the finished product, and the temperature of the co-solvent is 50°C.

[0045] (3) Adding modifier: After mixing uniformly in step 2 above, the mixed liquid is instantly heated to 185℃ through a heat exchanger and then sent to the pre-mixing tank, and SBS is continuously fed through automatic weighing and screw feeder The modifier is put into the pre-mixing tank, and high-speed stirring is perform...

Embodiment 3

[0050] Embodiment 3: It mainly includes the following steps:

[0051] (1) Raw material processing: select Karamay 90# asphalt and Tahe Petrochemical 60# asphalt and heat them to 151°C respectively, and mix according to the weight percentage of 31%:69%, and stir and mix at a temperature of 156°C for 4 hours. The stirring speed is 56 revolutions / min.

[0052] (2) Add co-solvent: After step 1 is completed, add co-solvent, the co-solvent is the reduced second and third-line anti-oxidation asphalt solubilizing extender, and stir and mix uniformly, the added amount of the co-solvent It is 11% of the finished product, and the temperature of the co-solvent is 45°C.

[0053] (3) Adding modifier: After mixing uniformly in step 2 above, the mixed liquid is instantly heat exchanged to 181℃ through the heat exchanger and then sent to the pre-mixing tank, and SBS is continuously fed through automatic weighing and screw feeder The modifier is put into the premix tank, and high-speed stirring is p...

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Abstract

The invention discloses a preparation method of SBS modified asphalt. The preparation method mainly comprises following steps: raw material processing; adding of a cosolvent; adding of a modifying agent; and reaction and slaking. Compared with the prior art, the advantages are that: Karamay No.90 asphalt and Tahe shihua No.60 asphalt are taken as matrix asphalt to prepare the modified asphalt, themodified asphalt is capable of solving problems in the prior art that product index deteriorates and using performance changes in long distance and long time heating transportation, the modified asphalt is excellent in high and low temperature performance, can be preferably used in Xinjiang or regions with climate and geography conditions similar to those in Xinjiang, is higher in practicality and production efficiency, and effective saving of energy is realized.

Description

Technical field [0001] The invention relates to a preparation method of SBS modified asphalt, in particular to a modification of Xinjiang local asphalt and a factory processing method of modified asphalt, belonging to the technical field of petrochemical industry. Background technique [0002] The main sources of asphalt in Xinjiang are Karamay Chunfeng Oil Refining and Tarim River Oilfield Refining. The characteristic of the asphalt refined from Karamay Chunfeng Oil is that the total content of aromatic hydrocarbons and saturated hydrocarbons in crude oil is generally ≧80%, and the sum of gum and asphaltene ≦20%, but the relative molecular weight of asphaltenes in Chunfeng oil is relatively large (14860), which is 4 times that of the typical heavy oil in Binnan Oilfield, in which C+H content is high (above 96%), and SNO impurity content is low; Tarim River The bitumen refined in the oil field is characterized by relatively high aromatic methyl cyclohexane and cyclohexane content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02
CPCC08L95/00C08L2201/08C08L2205/025C08L2205/03C08L53/02
Inventor 崔洁徐贵珠鲍黎
Owner 新疆交建路友道路材料科技有限公司