Waste asphalt mixture oil stone separation device with bio-oil as solvent oil and using method thereof

Abstract

The invention discloses a waste asphalt mixture oil stone separation device with bio-oil as solvent oil and a using method thereof. The old asphalt mixture oil stone separation device comprises a bio-oil supply mechanism, a waste asphalt mixture conveying belt, an oil stone separation generator, an oil stone filtering mechanism, an oil stone separated aggregate conveying belt and an aggregate grading screening mechanism. The upper surface of a bearing net in the oil stone filtering mechanism is high in left and low in right, and the slope gradient is 3%; a plurality of round holes are evenly formed in the surface of multiple layers of vibrating screens in the aggregate grading screening mechanism, the hole diameter of the vibrating screens is gradually decreased from top to bottom, and each vibrating screen is of a conical surface structure with the slope gradient of 3%. Waste asphalt in a waste asphalt mixture is dissolved by adopting bio-oil, oil stone separation of the waste asphaltmixture is economically and efficiently achieved, aggregate obtained after oil stone separation can be directly used as a recycled aggregate for complete utilization, asphalt does not need to be extracted from bio-oil obtained through filtration, the bio-oil is recycled and stored through a bio-oil recycling tank, 100% of the bio-oil is used as a bio-asphalt preparation raw material, re-extraction is not needed, and the process is simple.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and relates to an old asphalt mixture oil stone separation device and a use method in which bio-oil is used as solvent oil. Background technique [0002] It is estimated that there will be 13,000 kilometers of expressways and nearly 40,000 kilometers of ordinary national and provincial roads in my country every year, which need to be repaired or expanded, resulting in a large amount of milling materials for asphalt mixture. If it can be used efficiently, it will have huge economic and environmental benefits. For this reason, the national key research and development plan has established "solid waste recycling" as a key special project. [0003] In the early days, due to technical reasons, old asphalt pavement milling materials were often regarded as engineering waste, which was not only a waste of geotechnical materials, but also caused serious environmental pollution. With the develop...

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Problems solved by technology

[0006] In order to achieve the above object, the present invention provides an old asphalt mixture oil-stone separation device in which bio-oil is solvent oil, which solves the problem that the oil-stone separation equipment and technology existing in the prior art fail to realize the waste and old asphalt mixture oil-stone separation economically and efficiently, and The concentration of bitumen in solvent oil is very low, it is difficult to re-extract bitumen from solvent oil, and the process is complicated

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