Reactions between Ash and Ceramic Lining in Entrained Flow Gasification of Wood - Exposure Studies and Thermodynamic Considerations

M. Carlborg, D. Boström, M. Öhman & R. Backman
Gasification of biomass in the entrained flow process requires temperatures above 1000°C and pressures above 20 bar. Together with the ash forming elements, a harsh environment is created inside these reactors and degradation of construction material is likely to occur. This will lead to unplanned stops and increased maintenance work resulting in economic loss. In this work, two refractory materials (63 and 83 weight percent alumina) were exposed to synthetic ash composed of K2CO3, CaCO3...