Biomass waste gasification - Can be the two stage process suitable for tar reduction and power generation?

► Comparison of one stage (co-current) and two stage gasification of wood pellets. ► Original arrangement with grate-less reactor and upward moving bed of the pellets. ► Two stage gasification leads to drastic reduction of tar content in gas. ► One stage gasification produces gas with higher LHV at lower overall ER. ► Content of ammonia in gas is lower in two stage moving bed gasification.