000K  utf8
1100  2019$c2019-10-04
1500  eng
2050  urn:nbn:de:hbz:464-20191004-123229-7
2051  10.17185/duepublico/48899
3000  Pint, Bruce A.
3010  Keiser, James R.
3010  Unocic, Kinga A.
4000  Effect of impurities on supercritical CO2 compatibility  [Pint, Bruce A.]
4209  Impurities may affect structural alloy compatibility in both indirect- and direct-fired supercritical CO2 (sCO2) cycles for high efficiency power generation with peak temperatures above 700°C. Using a new multi-pump gas control system, experiments with controlled impurity additions were compared to baseline results in research- or industrial-grade CO2 at 750°C/300 bar. Low level impurities, 50 ppm O2 and 50 ppm H2O, were not found to affect mass change or reaction products after 2,500 h exposures. However, in RG sCO2+1%O2+0.25%H2O, higher reaction rates were observed for both Ni- and Fe-based alloys, but especially Fe-based alloys were strongly affected by these high impurity levels. Analytical TEM was used to characterize the reaction products on alloy 625.
4950  https://doi.org/10.17185/duepublico/48899$xR$3Volltext$534
4950  https://nbn-resolving.org/urn:nbn:de:hbz:464-20191004-123229-7$xR$3Volltext$534
4961  https://duepublico2.uni-due.de/receive/duepublico_mods_00048899
5010  62
5051  620