Studies of in-Bed Corrosion in a Pressurized Fluidized-Bed Combustor. Final Report

摘要

This report presents results of a corrosion investigation on candidate in-bed tube materials associated with a 1000-hour test programme in a pressurized fluidized bed combustion (PFBC) facility. Details of the test facility, nominal operating conditions and corrosion probes are given in the main report. Three organizations carried out the corrosion work and detailed results from their metrology and metallographic examinations are given in the appendices. The main report summarizes these findings, draws together the discussion and conclusions from each organization, and provides a common approach to the interpretation of the results. The results indicate that the PFBC environment of the test rig used for the 1000 hour test is less aggressive than AFBC environments. The performances of both Incoloy 800H and TP 347 SS are sufficiently good to suggest these materials may be suitable for use as superheater tubes, with Incoloy 800H performing marginally better. (ERA citation 06:033660)