A device and method for recycling asphalt pavement materials

Abstract

The invention relates to an asphalt pavement material recycling device and an asphalt pavement material recycling method. The asphalt pavement material recycling device is characterized by comprising a solvent storage tank, wherein the inlet of the solvent storage tank is connected with a condenser by a pipeline, the outlet of the solvent storage tank is connected with the inlet of a solvent tank by a pipeline, the outlet of the solvent tank is connected with the inlet of a solvent pump by a pipeline, the outlet of the solvent pump is connected with the inlets of two washing chambers and a flushing device arranged in a high-speed centrifugal machine by three parallel-connected pipelines respectively, the outlet pipelines of two washing chambers are connected with the inlet of the high-speed centrifugal machine, the outlet of the high-speed centrifugal machine is connected with the inlet of a solvent evaporating pot by a pipeline, the outlet of the solvent evaporating pot is connected with one inlet of a blending tank by a pipeline, the other outlet of the solvent evaporating pot and pipelines of steam outlets at the tops of the two washing chambers are converged by pipelines so as to be connected with the condenser, and the other inlet of the blending tank is connected with a fresh asphalt storage tank by a pipeline. According to the asphalt pavement material recycling device and the asphalt pavement material recycling method, aggregates and old asphalts in the old asphalt mixture can be screened and recycled, and besides, a secondary flushing device is arranged, so that the mixture can be effectively separated and filtered.

Description

technical field [0001] The invention relates to an asphalt pavement material recycling device and method, belonging to the technical field of highways. Background technique [0002] Asphalt regeneration technology is to evaluate the content and aging degree of asphalt in the original pavement material by recycling old asphalt, so as to determine the amount of rejuvenating agent, so that the reclaimed asphalt prepared by rejuvenating agent and old asphalt can meet the performance requirements of road asphalt. The existing regeneration technology is to add a regenerant on the basis of the old asphalt aggregate, but in the regeneration process of the old asphalt and the regenerant, the mixing time of the regenerant and the aggregate is short, and the bone cannot be fully dissolved. The old asphalt outside the material can easily cause the volatilization of the light components in the rejuvenating agent, resulting in a decrease in the stability of the recycled asphalt, resulting...

AI Technical Summary

Problems solved by technology

The existing regeneration technology is to add rejuvenation agent on the basis of old asphalt aggregate, but in the regeneration process of old asphalt and rejuvenation agent, the mixing time of rejuvenation agent and aggregate is short, and the bone cannot be fully dissolved. The old asphalt outside the material can easily cause the volatilization of light components in the regenerant, resulting in a decrease in the stability of the regenerated asphalt, resulting in quality problems in the regenerated asphalt pavement, and causing premature disease in the asphalt pavement

On the other hand, the amount of old asphalt obtained by the asphalt extractor currently used is too small to analyze the relevant indicators, and cannot accurately detect the aging degree of the waste pavement asphalt, thus reducing the accuracy of the regeneration technology

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