Fixed Bed Gasifier

This type of reactor consists of a cylindrical reactor with a fixed bed of solid fuel. The gasifying agent is injected upward or downward through the reactor. These simple reactors can operate at high carbon conversion, for a long solid residence time, at

low gas velocity and they are suitable for small scale applications, that is, < 10 MW [65]. Fixed bed gasifiers are classified into three groups according to the way the biomass and gasifying agent enter the reactor.