Profil Temperatur Pembakaran Co-firing Batubara Dengan RDF Pada Insinerator CFB

Abstract

This study aims to analyze the temperature profile of coal and Refuse Derived Fuel (RDF) co-firing in a Circulating
Fluidized Bed (CFB) incinerator under excess air variations of 0% (stoichiometric), 5%, 15%, and 25%. The experiments
were conducted using MSW–coal briquettes with silica sand as the bed material, while combustion temperatures were
measured at several reactor points using Type-K thermocouples. The results indicate that increasing excess air leads to a
decrease in peak combustion temperature, reflecting reduced thermal reaction intensity due to the enhanced cooling effect of
increased airflow. The temperature distribution at each variation exhibits a consistent trend, in which temperatures rise to a
peak during fuel combustion and gradually decrease afterward. Overall, excess air significantly influences the temperature
profile and has the potential to improve combustion quality through reduced flue gas emissions.