Title:
Combustion of Oil Palm Empty Fruit Bunch in a Fluidized Bed Using Alternative Bed Materials: Performance, Emissions, and Time-Domain Changes in the Bed Condition
Author(s):
Ninduangdee, P., Kuprianov, V.I.
Document(s):
Paper
Slide presentation
Abstract:
High-alkali empty fruit bunch (EFB), a biomass residue from palm oil production, was combusted in a fluidized bed using alternative bed materials (alumina sand and limestone) to inhibit bed agglomeration. During the experiments, EFB was burned at a 40 kg/h feed rate and excess air of 20–80%. Temperature and gas concentrations (O2, CO, CxHy, and NO) were recorded along the combustor centerline and at stack. Physical and chemical conditions of the bed materials and PM were examined at different operating times using SEM-EDS and XRF techniques, as well as a particle size analyzer. To achieve high (~99%) combustion efficiency and acceptable CO and NO emissions, excess air of about 40% should be applied when burning EFB in a fluidized bed of alumina, whereas 60% excess air is more suitable with a limestone bed. By using alumina sand and limestone, bed agglomeration can be prevented, thus ensuring safe and high-efficiency combustion of EFB for a relatively long time. However, both bed materials are subject to notable time-domain changes in their physical and chemical properties.
Keywords:
biomass, combustion, efficiency, emissions, fluidized bed, fly ashes
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Biomass and bioliquids combustion for small and medium scale applications
Event:
23rd European Biomass Conference and Exhibition
Session:
2BO.4.2
Pages:
529 - 539
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-2BO.4.2
Price:
FREE
