Supercritical oxidation of boiler tube materials

Satu Tuurna, Sanni Yli-Olli, Sami Penttilä, Pertti Auerkari, Xiao Huang

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

The advantage of using supercritical water (SCW) systems for power generation is based on the increased thermodynamic efficiency when operating at higher temperature and pressure. This has been realised for many years in medium to large size supercritical fossil plants. High efficiency in power generation is not only desirable because of economical reasons but also for enhanced environmental performance meaning reduced quantity of forming ash and emitted pollutants including CO2. Steam oxidation has become an important issue for steam power plants as operating temperatures increase from current to 650°C and even higher. To achieve these higher steam values new materials are needed. This paper presents results of the oxidation performance of potential new alloys (FeCrAlY, NiCrAl and Sanicro 25) in a supercritical water autoclave environment at 650°C/250 bar, with 150 ppb dissolved oxygen.
Original languageEnglish
Title of host publication Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015)
PublisherVTT Technical Research Centre of Finland
Number of pages14
ISBN (Electronic)978-951-38-8289-1
ISBN (Print)978-951-38-8290-7
Publication statusPublished - 2015
MoE publication typeB3 Non-refereed article in conference proceedings
Event7th International Symposium on Supercritical Water-Cooled Reactors, ISSCWR-7 - Helsinki, Finland
Duration: 15 Mar 201518 Mar 2015

Publication series

SeriesVTT Technology
Number216

Conference

Conference7th International Symposium on Supercritical Water-Cooled Reactors, ISSCWR-7
Abbreviated titleISSCWR-7
CountryFinland
CityHelsinki
Period15/03/1518/03/15

Fingerprint

Ashes
Power generation
Boilers
Steam
Steam power plants
Oxidation
Autoclaves
Dissolved oxygen
Water
Thermodynamics
Temperature

Cite this

Tuurna, S., Yli-Olli, S., Penttilä, S., Auerkari, P., & Huang, X. (2015). Supercritical oxidation of boiler tube materials. In Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015) [2056] VTT Technical Research Centre of Finland. VTT Technology, No. 216
Tuurna, Satu ; Yli-Olli, Sanni ; Penttilä, Sami ; Auerkari, Pertti ; Huang, Xiao. / Supercritical oxidation of boiler tube materials. Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015). VTT Technical Research Centre of Finland, 2015. (VTT Technology; No. 216).
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Tuurna, S, Yli-Olli, S, Penttilä, S, Auerkari, P & Huang, X 2015, Supercritical oxidation of boiler tube materials. in Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015)., 2056, VTT Technical Research Centre of Finland, VTT Technology, no. 216, 7th International Symposium on Supercritical Water-Cooled Reactors, ISSCWR-7, Helsinki, Finland, 15/03/15.

Supercritical oxidation of boiler tube materials. / Tuurna, Satu; Yli-Olli, Sanni; Penttilä, Sami; Auerkari, Pertti; Huang, Xiao.

Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015). VTT Technical Research Centre of Finland, 2015. 2056 (VTT Technology; No. 216).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Supercritical oxidation of boiler tube materials

AU - Tuurna, Satu

AU - Yli-Olli, Sanni

AU - Penttilä, Sami

AU - Auerkari, Pertti

AU - Huang, Xiao

PY - 2015

Y1 - 2015

N2 - The advantage of using supercritical water (SCW) systems for power generation is based on the increased thermodynamic efficiency when operating at higher temperature and pressure. This has been realised for many years in medium to large size supercritical fossil plants. High efficiency in power generation is not only desirable because of economical reasons but also for enhanced environmental performance meaning reduced quantity of forming ash and emitted pollutants including CO2. Steam oxidation has become an important issue for steam power plants as operating temperatures increase from current to 650°C and even higher. To achieve these higher steam values new materials are needed. This paper presents results of the oxidation performance of potential new alloys (FeCrAlY, NiCrAl and Sanicro 25) in a supercritical water autoclave environment at 650°C/250 bar, with 150 ppb dissolved oxygen.

AB - The advantage of using supercritical water (SCW) systems for power generation is based on the increased thermodynamic efficiency when operating at higher temperature and pressure. This has been realised for many years in medium to large size supercritical fossil plants. High efficiency in power generation is not only desirable because of economical reasons but also for enhanced environmental performance meaning reduced quantity of forming ash and emitted pollutants including CO2. Steam oxidation has become an important issue for steam power plants as operating temperatures increase from current to 650°C and even higher. To achieve these higher steam values new materials are needed. This paper presents results of the oxidation performance of potential new alloys (FeCrAlY, NiCrAl and Sanicro 25) in a supercritical water autoclave environment at 650°C/250 bar, with 150 ppb dissolved oxygen.

M3 - Conference article in proceedings

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Tuurna S, Yli-Olli S, Penttilä S, Auerkari P, Huang X. Supercritical oxidation of boiler tube materials. In Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015). VTT Technical Research Centre of Finland. 2015. 2056. (VTT Technology; No. 216).