skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Effect of Impurities on Oxidation in Supercritical CO2 at 750°C

Abstract

Both indirect- and direct-fired supercritical CO2 (sCO2) cycles for high efficiency power generation are expected to have impurities that may greatly alter the compatibility of structural alloys in these environments. However, the laboratory data on this subject are limited and inconclusive. For indirect applications, comparison 500-h cycles were conducted at 750°C at 1 and 300 bar with research grade and industrial-grade (higher possible impurities) CO2. The mass change results suggest only limited differences between these conditions for exposures up to 5,000 h. For direct-fired or open cycles, a test rig is being assembled to conduct similar exposures at 750°C/300 bar in CO2+1%O2-0.25%H2O. Commercial Fe- and Ni-base structural alloys were exposed in each environment and reaction products have been characterized after 1,000, 2,500 and 5,000 h exposures.

Authors:
ORCiD logo [1]; ORCiD logo [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1436041
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 6th International Supercritical CO2 Power Cycles Symposium - Pittsburgh, Pennsylvania, United States of America - 3/27/2018 4:00:00 AM-3/29/2018 4:00:00 AM
Country of Publication:
United States
Language:
English

Citation Formats

Pint, Bruce A., and Keiser, James R. The Effect of Impurities on Oxidation in Supercritical CO2 at 750°C. United States: N. p., 2018. Web.
Pint, Bruce A., & Keiser, James R. The Effect of Impurities on Oxidation in Supercritical CO2 at 750°C. United States.
Pint, Bruce A., and Keiser, James R. Thu . "The Effect of Impurities on Oxidation in Supercritical CO2 at 750°C". United States. https://www.osti.gov/servlets/purl/1436041.
@article{osti_1436041,
title = {The Effect of Impurities on Oxidation in Supercritical CO2 at 750°C},
author = {Pint, Bruce A. and Keiser, James R.},
abstractNote = {Both indirect- and direct-fired supercritical CO2 (sCO2) cycles for high efficiency power generation are expected to have impurities that may greatly alter the compatibility of structural alloys in these environments. However, the laboratory data on this subject are limited and inconclusive. For indirect applications, comparison 500-h cycles were conducted at 750°C at 1 and 300 bar with research grade and industrial-grade (higher possible impurities) CO2. The mass change results suggest only limited differences between these conditions for exposures up to 5,000 h. For direct-fired or open cycles, a test rig is being assembled to conduct similar exposures at 750°C/300 bar in CO2+1%O2-0.25%H2O. Commercial Fe- and Ni-base structural alloys were exposed in each environment and reaction products have been characterized after 1,000, 2,500 and 5,000 h exposures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: