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A kind of asphalt regenerant and preparation method thereof

A technology of asphalt rejuvenator and road petroleum asphalt, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of ineffective recycling and high cost of harmless treatment, so as to achieve sustainable development and ensure stability and compatibility, and the effect of improving fusion ability

Active Publication Date: 2022-03-18
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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  • A kind of asphalt regenerant and preparation method thereof
  • A kind of asphalt regenerant and preparation method thereof
  • A kind of 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 residue 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, belonging to the technical field of asphalt regenerant preparation. The asphalt regeneration agent of the present invention is composed of the following raw materials in parts by mass: 50-70 parts of aromatic oil, 30-50 parts of waste engine oil residue, 1-10 parts of compatibilizer and 1-10 parts of flame retardant. The asphalt regeneration agent is prepared through the steps of preheating, pre-mixing, shearing and adding flame retardant. The technical scheme of the invention can recycle and utilize waste engine oil residues in large quantities, reduces the cost of regenerant preparation, realizes the secondary effective utilization of waste engine oil residues, is beneficial to the sustainable development of the waste engine oil processing industry, and promotes asphalt regeneration technology development of.

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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Patent Type & Authority Patents(China)
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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