Asphalt concrete production system and method with reduced air pollutant generation and improved removal efficiency

Asphalt concrete production system with reduced air pollutants using indirect heating of reclaimed asphalt pavement and a dual-dryer setup

This technology is an asphalt concrete production system designed to reduce air pollutant emissions. It consists of a burner, a front-end recycling dryer that indirectly heats reclaimed asphalt pavement using combustion gases, and a back-end virgin material dryer that directly heats new materials using the exhaust gases.

Conventional asphalt production involves directly heating reclaimed asphalt, which generates significant air pollutants and makes it difficult to simultaneously improve thermal efficiency and pollutant removal rates.

By indirectly heating reclaimed asphalt with combustion gases through heat pipes and reusing the exhaust gases to heat virgin materials, this technology can be applied to the asphalt production process to reduce air pollutant generation and enhance removal efficiency.

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Key Features:

• A burner that combusts fuel to generate high-temperature gases for heating reclaimed asphalt and virgin materials
• A front-end recycling dryer that uses the combustion gases from the burner as a heat source to indirectly heat reclaimed asphalt
• A back-end virgin material dryer that directly heats new materials using the exhaust gases discharged from the front-end recycling dryer
• A front-end rotary kiln that rotates while holding reclaimed asphalt, equipped with heat pipes for combustion gas flow and temperature sensors to monitor internal heat

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