Details

Title:

Gasification Kinetics of Char from Olive Tree Pruning with Co2 and H20 in Fluidized Bed

Author(s):

Nilsson, S., Gómez-Barea, A., Fuentes, D., Pardo, I., Pinna, G., Silva Perez, M.A., Ollero, P.

Document(s):

Abstract:

Kinetics of gasification of char from olive tree pruning was measured in a fluidized bed at temperatures between 760 and 900 ºC. Experiments were carried out using H2O­N2 and CO2­N2 mixtures to measure the rates of the gasification reactions with H2O and CO2 and to assess the inhibition effects of H2 and CO. The reaction rates with H2O were 3­4 times faster than those obtained with CO2 and inhibition by CO and H2 was observed to be significant, especially at low temperature. Langmuir­Hinshelwood kinetics was obtained for the two gasification reactions. Additional experiments were carried out with CO2­H2O­N2 mixture to study the simultaneous gasification with CO2 and H2O. It was found that the char was converted slightly faster in a gas mixture containing both CO2 and H2O than in a gas with the same H2O concentration but substituting CO2 by N2.

Keywords:

biomass, gasification, kinetics, char, fluidized bed

Topic:

R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals

Subtopic:

Gasification for power, CHP and polygeneration

Event:

21st European Biomass Conference and Exhibition

Session:

2CV.3.9

Pages:

778 - 781

ISBN:

978-88-89407-53-0

Paper DOI:

10.5071/21stEUBCE2013-2CV.3.9

Price:

FREE