Preliminary experience with material testing at the oxyfuel pilot plant at Schwarzepumpe
2010 (English)In: 9th Liege conference on Materials for Advanced Power engineering 2010 / [ed] J. Lecomte-Beckers et al, Forschungszentrum Jülich GmbH , 2010, 1244-1259 p.Conference paper (Refereed)
Several material related issues may arise from oxyfuel combustion of coal due to the presence of CO2 but also as an effect of the partial recirculation of the flue gas. Two examples are increased corrosion and carburisation which may limit steam data, hence limiting the efficiency.
A number of corrosion tests, in both conventional air-firing and oxyfuel mode, have been made in Vattenfalls 30 MW oxyfuel pilot plant located in Schwarze Pumpe, Germany. Internally cooled corrosion probes, equipped with ferritic, austenitic, super austenitic steels as well as Ni-based and FeCrAl alloys, simulating superheaters, economisers and air preheaters were exposed for up to 1500 hrs.
The analyses show an indication of higher material wastage in oxyfuel compared to air combustion especially at the lower exposure temperatures. This may be due to increased sulphur concentration in corrosion front, increased heat flux, carburisation or other preciptate formations on austenitic steels and Ni-based alloys.
Place, publisher, year, edition, pages
Forschungszentrum Jülich GmbH , 2010. 1244-1259 p.
CCS, oxyfuel, oxyfuel pilot plant, corrosion
IdentifiersURN: urn:nbn:se:kth:diva-53459ISBN: 978-3-89336-685-9 (print)OAI: oai:DiVA.org:kth-53459DiVA: diva2:470141
Materials for Advanced Power engineering
According to the publishers the enitre conference proceedings are freely avaialble on JUWEL, the Jülicher Open Acess Server QC 201201192012-01-192011-12-282014-06-04Bibliographically approved