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Asphalt regenerant and preparation method thereof

A technology for asphalt regeneration agent and road petroleum asphalt, which is applied in building components, building thermal insulation materials, buildings, etc. Conducive to sustainable development and anti-aging effect

Active Publication Date: 2021-08-20
山东高速材料技术开发集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through these processes, 70-80% of waste engine oil can be effectively recycled, and the remaining 20-30% becomes waste engine oil residue (REOB) due to the large amount of impurities mixed in, which cannot be effectively recovered. The annual REOB produced in my country is about 1 million tons, its harmless treatment costs a lot, and the effective recycling of REOB has become a major problem that my country urgently needs to overcome

Method used

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  • Asphalt regenerant and preparation method thereof
  • Asphalt regenerant and preparation method thereof
  • Asphalt regenerant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare a kind of asphalt regenerant, the steps are as follows:

[0032] (1) Preheating

[0033] Respectively, 6.5kg of aromatic oil, 3.5kg of waste engine oil residue, and 0.3kg of No. 70 road petroleum asphalt were rapidly preheated to 130°C and stirred evenly before use. Waste lubricating oil residues after centrifugal separation and molecular distillation process;

[0034] (2) ready-mixed and sheared

[0035] Transfer aromatic oil and waste engine oil residues to the high-speed shear pre-mixing system for pre-mixing. The pre-mixing speed is 8r / min, the pre-mixing time is 15min, and the pre-mixing temperature is 130°C. After pre-mixing, add a compatibilizer and send it into the Machine shearing, the shearing rate is 4000r / min, the shearing time is 20min, the shearing temperature is 130°C, and the measured pH value is 5.5;

[0036] (3) Add flame retardant

[0037] Add 0.9 kg of aluminum hydroxide to the mixture after high-speed shearing, and adjust the pH value to...

Embodiment 2

[0039] Prepare a kind of asphalt regenerant, the steps are as follows:

[0040] (1) Preheating

[0041] Respectively, 5.5kg of aromatic oil, 4.5kg of waste engine oil residue, and 0.7kg of No. 70 road petroleum asphalt were rapidly preheated to 140°C and stirred evenly before use. The aromatic oil used was special aromatic oil for reclaimed rubber, and the waste engine oil residue was Waste lubricating oil residues after centrifugal separation and molecular distillation process;

[0042] (2) ready-mixed and sheared

[0043] Transfer aromatic oil and waste engine oil residues to the high-speed shear pre-mixing system for pre-mixing. The pre-mixing speed is 12r / min, the pre-mixing time is 20min, and the pre-mixing temperature is 140°C. After pre-mixing, add a compatibilizer and send it into Machine shearing, the shearing rate is 5000r / min, the shearing time is 30min, the shearing temperature is 140°C, and the measured pH value is 6.3;

[0044] (3) Add flame retardant

[0045...

Embodiment 3

[0047] Prepare a kind of asphalt regenerant, the steps are as follows:

[0048] (1) Preheating

[0049] Respectively, 6.0kg of aromatic oil, 4.0kg of waste engine oil residue, and 0.5kg of No. 70 road petroleum asphalt were quickly preheated to 135°C and stirred evenly before use. The aromatic oil used was special aromatic oil for reclaimed rubber, and the waste engine oil residue was Waste lubricating oil residues after centrifugal separation and molecular distillation process;

[0050] (2) ready-mixed and sheared

[0051] Transfer aromatic oil and waste engine oil residues to the high-speed shear pre-mixing system for pre-mixing. The pre-mixing speed is 10r / min, the pre-mixing time is 20min, and the pre-mixing temperature is 135°C. After pre-mixing, a compatibilizer is added to the Machine shearing, the shearing rate is 4500r / min, the shearing time is 25min, the shearing temperature is 135°C, and the measured pH value is 5.9;

[0052] (3) Add flame retardant

[0053] Add...

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Abstract

The invention discloses an asphalt regenerant and a preparation method thereof, and belongs to the technical field of asphalt regenerant preparation. The asphalt regenerant is prepared from the following raw materials in parts by mass: 50 to 70 parts of aromatic hydrocarbon oil, 30 to 50 parts of waste engine oil residues, 1 to 10 parts of compatilizer and 1 to 10 parts of flame retardant, and is prepared by the steps of preheating, premixing, shearing, adding the flame retardant and the like. According to the technical scheme, a large amount of waste engine oil residues can be recycled, the preparation cost of the regenerant is reduced, secondary effective utilization of the waste engine oil residues is achieved, sustainable development of the waste engine oil processing industry is facilitated, and development of the asphalt regeneration technology is promoted.

Description

technical field [0001] The invention belongs to the technical field of asphalt rejuvenator preparation, and in particular relates to an asphalt rejuvenator and a preparation method thereof. Background technique [0002] As of the end of 2019, the mileage of expressways in my country has reached 142,000 kilometers, and the total mileage of highways in China has reached more than 4.8 million kilometers. Every year, tens of millions of tons of waste asphalt mixture will be produced in the overhaul of asphalt pavement of highways and national and provincial highways. The stacking of waste asphalt mixture not only occupies a large amount of land resources, but also causes serious environmental pollution. On the other hand, stone materials such as basalt, diabase, andesite, which are suitable for laying high-grade asphalt pavement in many areas of our country, are also very scarce resources. Asphalt pavement recycling technology achieves the purpose of saving resources and protec...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L91/00C08K3/22
CPCC08L95/00C08L91/00C08L2201/02C08K2003/2227C08K3/22
Inventor 李孟曲恒辉冯美军张圣涛朱辉王腾
Owner 山东高速材料技术开发集团有限公司
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