Title:
Technical Characterization of Colombian Agroindustry Residues for Termochemical Conversion in Fluidized Bed Reactors
Author(s):
Cáceres Martínez, L.E., Hartwig, P., Guío-Pérez, D.C., Rincón Prat, S.L.
Document(s):
Paper
Poster
Abstract:
The present work reports on the experimental results of the physical and fluid-dynamic characterization of agroindustry residues with high technical energy potential in Colombia. The main objective is to conclude about the suitability of these materials for their use through thermochemical processes in fluidized beds. The physical properties analyzed were moisture content, mean particle size, sphericity, bulk density and particle density. The fluid dynamic characterization was performed for biomass-sand mixtures and consisted on the measurement of pressure drops with the variation of fluidization velocity; characteristic behaviors were identified and minimum fluidization velocities were calculated. Biomass-sand mixtures of 3 %, 5 %, 7 % and 10 % of biomass in weight were tested, the effect of the mass fraction and physical properties on the quality of fluidization was analyzed. Five different phenomena were observed: bubbling, channeling, jetting flow, slugging and segregation. Experimental minimum fluidization velocities were compared with predictions based on correlations available in the literature; poor agreement was obtained specially for those with irregular morphology. Oil palm shell and poultry litter samples showed the best fluidization behavior even for the highest biomass fraction studied. Oil palm fiber, oil palm rachis, sugar cane bagasse and sugar cane top coarsely ground exhibit important difficulties to reach stable fluidization. It can also be concluded that, for the systems under study, the quality of fluidization is favored by small particle sizes, higher bulk and particle densities, higher sphericity and lower biomass fractions.
Keywords:
thermochemical conversion, agroindustrial residues, biomass physical characterization, biomass fluid-dynamic characterization, minimum fluidization velocity, biomass-sand mixtures fluidization
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for synthesis gas production
Event:
25th European Biomass Conference and Exhibition
Session:
2CV.3.34
Pages:
817 - 827
ISBN:
978-88-89407-17-2
Paper DOI:
10.5071/25thEUBCE2017-2CV.3.34
Price:
FREE
