Title:
Effect of Iron Enrichment in Olivine Bed Material on the Fuel Gas Quality Produced via Steam/O2 Gasification Process
Author(s):
Freda, C., Nanna, F., Fanelli, E., Villone, A., Barisano, D.
Document(s):
Paper
Abstract:
Tests of steam/O2 gasification were carried out at a 10 kWth internally circulating bubbling fluidized bed (ICBFB) reactor in the presence of a new catalytic bed material (10% Fe/Olivine). For comparison, reference tests using unmodified olivine were also carried out. The ICBFB reactor was operated at the gasification conditions of: 855 °C, 0.33 ER, 0.64 S/Bdaf, atmospheric pressure. During the gasification tests, the raw gas was monitored with respect to water content, gas composition and contaminants (i.e. tar and dust). Char residue was also determined. By comparing the results, the gasification yield and the gas composition were found very similar. On average the gasification yield was found to be about 1.2 Nm3/kgdaf, and the fuel gas have a dry composition of about: 30 %v H2, 25 %v CO, 35 %v CO2, 7 %v CH4 and 3 %v light hydrocarbons. On the contrary, the 10%Fe/Olivine resulted significantly more effective towards the tar removal than unmodified olivine. From the chromatographic analysis, it was evaluated a tar reduction efficiency of 38 % by weight. As far as concern the particulate content, a roughly double content in particulate was measured. The residues collected showed an appreciable content in fine particles originated from the 10% Fe/Olivine bed material. Therefore, compared to the unmodified olivine, increased brittleness of the new bed material was detected.
Keywords:
gasification, tar removal, steam/O2, Fe/Olivine
Topic:
Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Gasification for power, CHP and polygeneration
Event:
19th European Biomass Conference and Exhibition
Session:
VP2.3.20
Pages:
1426 - 1431
ISBN-13:
978-88-89407-55-4
ISBN-10:
88-89407-55-7
Paper DOI:
10.5071/19thEUBCE2011-VP2.3.20
Price:
FREE
