Materials Issues for PFBC Expander Turbines

Several large pressurized fluidized bed combustion systems have recently been installed. In addition, second-generation concepts are being developed, in which the turbine inlet temperature will be appreciably higher. The durability of the gas turbine expander remains a question for the technology, and experience is limited. The available information is presented, and the potential problems of erosion, corrosion, and erosion/corrosion are discussed.Copyright © 1990 by ASME