Abstract
The corrosion performance of three different superheater
austenitic steels (TP347HFG, HR3C and Sanicro 25) has
been determined in laboratory tests under simulated
oxy-fuel conditions (60 CO2 - 4 O2 - bal N2/Ar vol%) with
three levels of H2O (0, 10 and 30 vol%), with and without
a synthetic carbonate based deposit (85 CaCO3 - 15 CaSO4
wt%) at 650ºC for 168, 500 and 1000 hours. The results
obtained from oxy-fuel conditions are compared with
corresponding tests simulating conventional
air-combustion and co-combustion in air (with and without
the 85CaO-14CaSO4-1KCl synthetic deposit). The results
from the 168 h tests in a moist and a high CO2 atmosphere
showed clear corrosion of TP347HFG. In addition,
carburisation was observed already in the 168 h tests
with the CaCO3-CaSO4 deposits. The HR3C and Sanicro 25
performed better than TP347HFG. However, growing oxide
nodules could be observed already after 168 h in some
cases with HR3C and Sanicro 25. A clear oxide layer was
observed on all materials after 168 h exposures in air,
while oxy-fuel conditions with water vapor caused
significant corrosion only to the TP347HFG.
| Original language | English |
|---|---|
| Title of host publication | European Corrosion Congress, EUROCORR 2011 |
| Place of Publication | Stockholm |
| Publisher | European Federation of Corrosion (EFC) |
| Pages | 1052-1061 |
| Volume | 2 |
| ISBN (Print) | 978-1-61839-412-5 |
| Publication status | Published - 2011 |
| MoE publication type | A4 Article in a conference publication |
| Event | European Corrosion Congress, EUROCORR 2011 - Stockholm, Sweden Duration: 4 Sept 2011 → 8 Sept 2011 |
Conference
| Conference | European Corrosion Congress, EUROCORR 2011 |
|---|---|
| Abbreviated title | EUROCORR 2011 |
| Country/Territory | Sweden |
| City | Stockholm |
| Period | 4/09/11 → 8/09/11 |
Keywords
- material performance
- oxyfuel combustion
