Title:
Oxygen Enriched Air Gasification in an Experimental Two-Stage Gasifier
Author(s):
Berger, B., Bacq, A., André, T., Bach, T., Bourgois, F., Jeanmart, H.
Document(s):
Paper
Slide presentation
Abstract:
Gasification proposes to convert a large variety of biomass, including wastes, into a convenient fuel in the form of syngas. Syngas usually presents a lower heating value (LHV) below 6MJ/Nm3. This LHV is due to the high nitrogen content of syngas (45-50%) as air is usually used as the gasifying agent in small-scale applications. It is low in comparison to the LHV of natural gas; too low for some applications. The use of oxygen-enriched air reduces the nitrogen content of syngas and increases its LHV. This paper presents the preliminary results obtained on an experimental two-stage gasifier using a mixture of 50% of oxygen and 50% of nitrogen as the gasification agent. The syngas produced contains approximately 17% of nitrogen and has a LHV of 8.5MJ/Nm3. The decrease of nitrogen content not only increases the LHV at the output but also increases the reactive zones temperature potentially allowing a better carbon conversion. The tests also show that there is no increase in the wear of the facility on a short term basis. This will need to be validated on longer experiments.
Keywords:
gasification, syngas, multi stage, oxygen
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for synthesis gas production
Event:
23rd European Biomass Conference and Exhibition
Session:
2DO.5.3
Pages:
656 - 659
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-2DO.5.3
Price:
FREE
