Integrated system and method for raw recycled aggregate drying equipment

Abstract

The invention relates to the technical field of asphalt drying equipment, in particular to an integrated system and method for raw recycled aggregate drying equipment. The system comprises a raw material drying roller and a reclaimed material drying roller. The raw material drying roller is provided with a combustor and a first air inducing tank. The reclaimed material drying roller is provided with a hot flue gas inlet and a second air inducing tank. The first air inducing tank is connected with the hot flue gas inlet through a hot flue pipe, and hot flue gas in the raw material drying rolleris introduced into the reclaimed material drying roller. The second air inducing tank is connected to the raw material drying roller through a tail gas pipe. Introducing is carried out from one end provided with a burner. Tail gas of the reclaimed material drying roller is introduced to the position of the burner in the raw material drying roller to carry out secondary combustion. The raw material drying roller and the reclaimed material drying roller share the same set of burner, so that the equipment cost is low. The reclaimed material drying roller is used for drying by adopting a hot fluegas heat exchange mode, the temperature is uniform and easy to control, and hearth parts are omitted. Heat is recycled, the energy utilization rate is high, and the equipment adaptability is high.

Description

technical field [0001] The invention relates to the technical field of asphalt drying equipment, in particular to an integrated system and method for raw recycled aggregate drying equipment. Background technique [0002] Asphalt mixture is a mixture made by mixing mineral materials and asphalt binder. Aggregate is mainly divided into primary aggregate and recycled aggregate. Primary aggregate refers to natural aggregate such as sand and gravel. Recycled aggregate refers to the recovery of waste asphalt pavement. material. Due to the different material properties of raw materials and recycled materials, the drying process generally needs to be processed by two sets of different equipment. Two sets of independent drying devices have a large energy waste and require corresponding environmental protection equipment, and the work efficiency is low. [0003] In order to solve the above problems, the Chinese patent with the authorized announcement number CN 204509958U discloses a ...

AI Technical Summary

Problems solved by technology

The existing raw recycled aggregate drying integrated system realizes the thermal cycle of exhaust gas, but it still needs to use two sets of heating devices, which is costly; at the same time, the traditional recycled aggregate drying drum is used for heating Generally, the design scheme of burner and furnace is adopted. The cost of burner and furnace is relatively high, and the service life of the furnace is relatively low. Therefore, the existing design has problems of relatively high cost of construction, maintenance and operation.

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