Title:
Steam/Oxygen Biomass Gasification in a 1000 Kwth ICBFB Pilot Plant
Author(s):
Barisano, D., Canneto, G., Nanna, F., Alvino, E., Pinto, G., Villone, A., Battafarano, A., Corrado, M., Braccio, G.
Document(s):
Paper
Abstract:
Steam/O2 biomass gasification campaigns were carried out at a 1000 kWth pilot plant based on an internally recirculating bubbling fluidized bed (ICBFB) reactor. Tests were carried out at different biomass feeding rates and comparable operating conditions, that is: 0.20-0.22 ER, 0.38-0.41 Steam/Biomass and 830-880 °C gasification temperature. Almond shells were supplied to the reactors at 140 and 180 kgwet/h. The two gasification campaigns showed comparable overall performances. Gas yields and carbon conversions of about 1.0 Nm3dry/kg(dry, Biom) and 85 %(wt, daf) were respectively estimated. Larger differences were found in the gas composition and contaminant loads. In the first case, it was observed an average dry gas composition of: 30-33 %v H2, 28-32 %v CO, 22-27 %v CO2, 9-11 %v CH4, up to 2 %v C2+, in the second a higher CH4 and lower H2 contents were instead achieved. The highest particles and tars loads were in the ranges 12-16 g/Nm3dry and 12-18 g/Nm3dry, respectively. Finally, H2S, HCl and NH3 were all found in the range: 60-110 ppmv. In the whole, the gasification test campaigns allowed to gain relevant evidence about the operability and the performance of the gasifier.
Keywords:
biomass gasification, product gas, fluidized bed reactor
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for power, CHP and polygeneration
Event:
23rd European Biomass Conference and Exhibition
Session:
2CO.2.4
Pages:
550 - 554
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-2CO.2.4
Price:
FREE
