Modelling of erosion/corrosion processes in coal conversion systems
A unified high temperature erosion/corrosion model has been developed and tested against laboratory and in-plant exposure data. The model can be applied to a large variety of erosion/corrosion problems encountered in coal conversion systems, e.g. in bed heat exchangers, superheaters and exhaust gas turbines. Data input required by the model are the mechanical material properties, corrosion rates and corrosion morphology from autoclave tests, erosion morphology data from erosion impact studies and exposure conditions obtained from operational and in-plant data. The model covers three basic erosion/corrosion regimes: 1) substrate dominated regime 2) scale dominated regime 3) scale modified erosion regime. The model has been calibrated against laboratory experiments and has been verified with some in-plant exposure data on four HT-alloys AISI 310, Alloy 800H, Fecralloy AB, and IN 738LC.
Bibliographic Reference: Paper presented: High Temperature Materials for Power Engineering, Liège (BE), Sept. 24-27, 1990
Availability: Available from (1) as Paper EN 35832 ORA
Record Number: 199011804 / Last updated on: 1994-12-02
Original language: en
Available languages: en