This paper is an update of the report “Economic Comparison of Materials of Construction of Wet FGD Absorbers and Internals” which was presented at the 1991 EPRI/EPA/DOE S02 Control symposium, An economic comparison of the materials standardly used for fabrication of
wet FGD spray towers will be presented in this paper. Costs for various materials of construction for such absorber components as spray headers, moisture separators, and gas distribution devices will also be addressed