Increased Power Generation by Humidification of Gasification Agent in Biofuel Production
2010 (English)In: World Renewable Energy Congress XI, 2010Conference paper (Refereed)
The second generation biofuels are based on gasification of waste and non-food crops. A mix of oxygen and steam is used as gasification agent. A drawback when mixing the two pure streams of oxygen and steam is that exergy is lost. The gasification process is often pressurized; which implies that both the oxygen and the steam must have higher pressure to enable feeding. The gasification process is therefore one of the main internal steam uses. However, if the steam injected can be replaced or decreased in pressure level, power generation could be significantly increased. This study shows that the power penalty can be reduced by humidification of the gasification agent compared to steam injection. The power penalty can be reduced by more than 10% when using humidification process. The power penalty is reduced by even more, 18-25%, when also using a pre-humidifier driven by latent heat recovered after the methanisation.
Place, publisher, year, edition, pages
Humidification, Gasification Agent, SNG
IdentifiersURN: urn:nbn:se:kth:diva-29248OAI: oai:DiVA.org:kth-29248DiVA: diva2:392830
World Renewable Energy Congress XI 25-30 September 2010, Abu Dhabi, UAE
QC 201101282011-01-282011-01-282012-11-27Bibliographically approved