Abstract

As a pretreatment for energy conversion, biomass is often pelletized for efficient transport, storage, and handling with an increased bulk density and size uniformity. In this study, the combustion behaviors of a single biomass pellet were investigated for pine wood and bean husk in comparison to sub-bituminous coal. The pellets were immediately exposed to an updraft flow of nitrogen and air for pyrolysis and combustion analysis. The hot gas flow were at approximately 1080 K and the pellets were burned in a range of 21-40% oxygen for the combustion behaviors. The sequential progress of combustion was monitored by video recording, optical pyrometry, and gas composition analysis for their ignition, flame characteristics, and burnout time. According to the results, the biomass pellets had fast ignition, which was attributed to the release of oxidizing gases at an early stage. TGA and pyrolysis analysis also indicated that biomass had the fast volatile release due to their primary components. The flame size of pine wood were the largest among three pellets while the coal had the highest flame temperature with the smallest flame size.

Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call