Kihedu, Joseph H.Yoshiie, RyoNunome, YokoUeki, YasuakiNaruse, Ichiro2016-06-172016-06-172014-01Kihedu, J., Yoshiie, R., Nunome, Y., Ueki, Y., & Naruse, I. (2014). Counter-flow air gasification of woody biomass pellets in the auto-thermal packed bed reactor. Fuel, 117, 1242-1247. http://dx.doi.org/10.1016/j.fuel.2013.07.0500016-2361http://hdl.handle.net/20.500.11810/2541Full text can be accessed at the following link http://www.sciencedirect.com/science/article/pii/S0016236113006492Counter-flow packed bed gasification was carried out featuring a combination of downdraft and updraft operation modes. A column reactor of inside diameter 102 mm and 1000 mm height was used. Downdraft and updraft air supply were varied while the total air supply was maintained constant. Counter-flow gasification with downdraft air supply at 12 L/min and updraft air at 4 L/min offered optimal conditions, producing syngas with 4.28 MJ/m3 N LHV and 5.84 g/m3 N tar content. Under similar operating conditions, cold gas efficiency was about 77% while carbon conversion reached 88%. Increasing the updraft air flow resulted in reduced tar generation and increased carbon conversion, however, the syngas LHV and cold gas efficiency were affected adversely.enBiomassGasificationPacked bedTarCarbon conversionJournal Article, Peer Reviewed10.1016/j.fuel.2013.07.050