Pengaruh Variasi Temperatur Operasi Terhadap SirkulasiPartikel Padat Pada Insinerator Circulating FluidizedMenggunakan CPFD Barracuda

Abstract

The increase in solid waste due to population and industrial growth requires efficient and sustainable treatment solutions. One
emerging approach is waste-to-energy technology based on RDF (Refuse Derived Fuel) combustion, with the Circulating
Fluidized Bed (CFB) reactor as a preferred option due to its thermal efficiency and fuel flexibility. The advantage of the CFB
system lies in the circulation of solid particles, which maintains even heat distribution and optimal combustion, although it s
performance is influenced by operating temperature. Therefore, understanding the effect of temperature on particle circulation
is essential for system effectiveness. This study evaluates the influence of temperature variation on particle circulation in a
CFB reactor using CPFD Barracuda simulation. The simulation used 1.5 kg of RDF, 5 kg of silica sand, 14 m/s air velocity,
and operating temperatures ranging from 750°C to 900°C. The observed parameters include residence time, volume fraction,
and circulation mass. Results show that temperature affects circulation intensity: solid mass remained at 59% at 750°C and
800°C, increased to 60% at 850°C, and stabilized at 900°C. Particle residence time was around 10 seconds, and volume fraction
increased from 0.589 to 0.6 and remained constant. These findings confirm that temperature regulation is crucial to optimizing
circulation and combustion efficiency in RDF-fueled CFB systems.