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A kind of asphalt regenerant and preparation method thereof

An asphalt rejuvenator and asphalt regeneration technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor long-term stability of waste asphalt, and achieve the effect of improving self-stability, stability, and recycling rate

Active Publication Date: 2021-01-05
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose an asphalt regenerant to solve the problem of poor long-term stability of the existing waste asphalt reuse

Method used

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  • A kind of asphalt regenerant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An asphalt rejuvenator, in parts by weight, the asphalt rejuvenator is composed of 45-55 parts of base oil, 20-30 parts of aromatic light oil, and 20-30 parts of plasticizer; of waste engine oil. Among them, the waste engine oil can be at least one of the waste engine oil in domestic automobile engines, the waste engine oil in motorcycle engines, and the mixed waste engine oil of different brands left over from automobile 4s shops or auto repair factories; the aromatic light oil is furfural Extraction oil, which is a by-product of the lube base oil manufacturing process.

[0027] The asphalt rejuvenator of this embodiment pretreats the waste engine oil as the base oil by heating, cooling, filtering and other processes to remove water, light components, residues, etc., so as to improve the stability of the waste engine oil, thereby improving The stability of the asphalt rejuvenator prepared in this example, when the asphalt rejuvenator prepared in this example is used f...

Embodiment 2

[0032] A kind of asphalt regenerant, specifically prepare through the following steps:

[0033] 1) Put the waste engine oil into a reaction kettle with a temperature of 190°C, heat it, and stir it at a speed of 700r / min for 60 minutes during the heating process, then cool the waste engine oil to room temperature, and use a 2.0 micron microporous filter membrane Filter the cooled waste engine oil to obtain base oil;

[0034] 2) Add 50 parts of base oil into the reactor and gradually raise the temperature to 135°C, then add 25 parts of furfural to extract the oil, and stir at a speed of 700r / min for 10 minutes to obtain asphalt regenerated oil;

[0035] 3) Add 20 parts of component A to the asphalt regenerated oil, stir for 10 minutes at a speed of 1000r / min, then add 5 parts of component B, continue stirring for 10 minutes at a speed of 1000r / min, after stirring, cool to room temperature to obtain the asphalt regenerant of this embodiment.

Embodiment 3

[0037] A kind of asphalt regenerant, specifically prepare through the following steps:

[0038] 1) Put the waste engine oil into the reaction kettle with a temperature of 195°C, heat it, and stir it at a speed of 700r / min for 60 minutes during the heating process, then cool the waste engine oil to room temperature, and use a 2.0 micron microporous filter membrane Filter the cooled waste engine oil to obtain base oil;

[0039] 2) Add 40 parts of base oil into the reactor and gradually raise the temperature to 140°C, then add 35 parts of furfural to extract the oil, and stir at a speed of 700r / min for 10 minutes to obtain asphalt regenerated oil;

[0040] 3) Add 20 parts of component A to the asphalt regenerated oil, stir for 10 minutes at a speed of 1000r / min, then add 5 parts of component B, continue stirring for 10 minutes at a speed of 1000r / min, after stirring, cool to room temperature to obtain the asphalt regenerant of this embodiment.

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Abstract

The invention provides an asphalt regenerant and a preparation method thereof. The asphalt regenerant is prepared from the following components in parts by weight: 45-55 parts of base oil, 20-30 partsof aromatic light oil and 20-30 parts of a plasticizer, wherein the base oil is heated, cooled and filtered waste engine oil. According to the asphalt regenerant, the waste engine oil serving as thebase oil is pretreated by processes including heating, cooling and filtering to remove moisture, light components, residues and scraps thereinl, stability of the waste engine oil is improved, and accordingly, stability of the asphalt regenerant is improved; when the asphalt regenerant is used for recycling of waste asphalt, regenerated asphalt can have good long-term stability. Besides, the asphalt regenerant takes waste engine oil as a main component, so that the cost of the prepared asphalt regenerant can be reduced, the regeneration cost of regenerated asphalt can be further reduced, and the recycling rate of waste asphalt can be increased.

Description

technical field [0001] The invention relates to the technical field of asphalt, in particular to an asphalt regenerant and a preparation method thereof. Background technique [0002] The total mileage of expressways in my country has exceeded 130,000 kilometers. With the vigorous development of road construction in my country, the construction and maintenance technology of asphalt mixture pavement is becoming more and more mature, and the amount of asphalt used is also increasing year by year. However, during the long-term use of asphalt pavement, due to factors such as oxidation, sunlight, rain, load, and temperature changes, waste and harden will occur, resulting in cracks, potholes and other pavement damage phenomena. Although a large number of discarded waste asphalt mixtures will not directly cause serious ecological damage, the recycling of waste asphalt is in urgent need of development under the severe situation of depletion of fossil fuels and declining asphalt produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L63/00C08L75/04C08L91/00
CPCC08L95/00C08L2205/025C08L2205/035C08L2207/20C08L63/00C08L75/04C08L91/00
Inventor 白桃刘洋胡小弟潘攀徐丰
Owner WUHAN INSTITUTE OF TECHNOLOGY
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