authors |
Pio, DT; Gomes, HGMF; Tarelho, LAC; Ruivo, LCM; Matos, MAA; Pinto, RG; Frade, JR; Lemos, FMS |
nationality |
International |
journal |
ENERGY REPORTS |
author keywords |
Biomass; Bubbling fluidized bed; Catalyst; Gasification; Ilmenite |
keywords |
DIRECT GASIFICATION; BIOFUEL PRODUCTION |
abstract |
In this work, in-situ application of natural occurring ilmenite (FeTiO3) for upgrading the producer gas from a pilot-scale bubbling fluidized bed gasifier was performed and its influence on the gas characteristics and gasifier performance was analyzed. Without using ilmenite, the producer gas average composition (volumetric basis, dry gas) was 15.2% CO, 7.6% H-2, 3.8% CH4 and 15.6% CO2, with 0.50 H-2:CO molar ratio and 5.0 MJ/Nm(3) lower heating value. For this condition, 1.6 Nm(3) gas/kg biomass (dry basis) specific dry gas production, 44.5% cold gas efficiency and 68.4% carbon conversion efficiency were attained. Using ilmenite as catalyst, the producer gas average composition (volumetric basis, dry gas) was 13.9% CO, 11.7% H-2, 4.0% CH4 and 17.9% CO2, with 0.84 H-2:CO molar ratio and 5.1 MJ/Nm(3) lower heating value. For this condition, 1.7 Nm(3) gas/kg biomass (dry basis) specific dry gas production, 49.8% cold gas efficiency and 75.5% carbon conversion efficiency were attained. Thus, in-situ application of ilmenite generally improved the gasifier performance and induced an increase of H-2 concentration and H-2:CO molar ratio in the producer gas of 35.1% and 40.7%, respectively, improving its suitability for advanced gas applications that require high H-2:CO ratios, such as liquid fuels and chemicals synthesis. (C) 2019 Published by Elsevier Ltd. |
publisher |
ELSEVIER |
issn |
2352-4847 |
year published |
2020 |
volume |
6 |
beginning page |
325 |
ending page |
330 |
digital object identifier (doi) |
10.1016/j.egyr.2019.08.063 |
web of science category |
Energy & Fuels |
subject category |
Energy & Fuels |
unique article identifier |
WOS:000518455400050
|
ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
3.595 |
5 year journal impact factor |
Not Available |
category normalized journal impact factor percentile |
54.018 |
dimensions (citation analysis):
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altmetrics (social interaction):
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