Title:
Modelling Pyrolysis Kinetics Effect on a Pilot Scale Conical Spouted Bed Reactor Performance
Author(s):
Fernandez-Akarregi, A.R., Makibar, J., Álava, I., Cueva, F., Olazar, M.
Document(s):
Paper
Abstract:
The aim of this work is to focus on spouted bed reactor operating conditions at IkerlanIK4 pyrolysis pilot scale plant, designed for 25 kg/h biomass feeding rate. Specifically, bed temperature and particle size were studied. As well as cold flow hydrodynamic studies, heat transfer characteristics and pyrolysis kinetics were also studied in order to predict the performance of the reactor. Conical spouted bed allows stable operation with very irregular biomass/sand mixtures without segregation. In this work raw material particle size effect has been discussed because it is closely related with pyrolysis mechanism and the regime which controlled the process. The role of the internal and external heat transfer is highly dependent on the particle size. For particles bigger than 1.5 mm the internal heat transfer is the limiting factor, so the external heat transfer is a secondary factor for these size particles. These previous results and the experimental work in our pilot plant will serve as a basis for a more accurate modelling.
Keywords:
pyrolysis, kinetics, spouted bed reactor
Topic:
Thermochemical conversion - Pyrolysis for power, CHP, polygeneration and chemicals
Subtopic:
Pyrolysis for power, CHP, polygeneration and chemicals
Event:
18th European Biomass Conference and Exhibition
Session:
VP2.3.28
Pages:
1043 - 1046
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-VP2.3.28
Price:
FREE
