Abstract:
The increasing demand for renewable energy in industrial and agro-industrial sectors has 17 encouraged the substitution of fossil fuels by lignocellulosic biomass in cogeneration systems. In 18 this context, the residues generated in the palm oil agroindustry – specifically palm mesocarp fiber 19 and palm empty fruit bunch fiber – stand out due to their high energy potential and wide 20 availability. This study aimed to evaluate the combustion behaviour of these biomasses, both 21 individually and as a 1:1 volumetric blend, by applying predictive indices based on ash 22 composition and conducting combustion trials in a pilot-scale bubbling fluidized bed reactor. The 23 analysis focused on gaseous emissions (NOₓ, SO₂, CO, HCl), thermal performance, and solid 24 effluent generation. The predictive indices indicated a high propensity for slagging and fouling in 25 PMF, while PEFBF presented lower operational risks. Pilot-scale tests confirmed that parameters 26 such as excess air, bed temperature, and gas residence time significantly influenced the emission 27 profiles. The co-combustion condition yielded the lowest emissions of CO and SO₂, the highest 28 combustion efficiency, and the lowest particulate matter release. Optimal performance was 29 achieved at bed temperatures slightly below 800 °C and freeboard temperatures approaching 30 900 °C, enabling rapid volatile release and complete oxidation in the upper zone of the reactor. 31 These conditions also contributed to mitigating sintering and deposit formation in the combustion 32 chamber. The findings demonstrate the technical feasibility of utilizing palm residues for energy 33 generation and underscore the importance of integrating empirical tools with experimental 34 validation to optimize biomass combustion and ensure regulatory compliance.
Referência:
MEYER, Dênis Correa; MOREIRA, Renata; SILVA, Ana Paula de Souza; BEZERRA, Breno Villa Rubio; USHIMA, Ademar Hakuo; ALVES, Vittor Rodrigues Santos. Evaluation of waste-energy process through the combustion and co-combustion of palm residual biomass. In: BIOMASS AND BIOENERGY CONFERENCE, 2025, Sorocaba. Pôster… 1 slide.
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