Characterization of an Improved Solid Amine for a Regenerative CO 2 Removal System

Paper #:
  • 932292

Published:
  • 1993-07-01
Citation:
Graf, J., Dall-Bauman, L., and Jeng, F., "Characterization of an Improved Solid Amine for a Regenerative CO2 Removal System," SAE Technical Paper 932292, 1993, https://doi.org/10.4271/932292.
Pages:
10
Abstract:
The Shuttle Orbiter humidity control and carbon dioxide removal system for extended duration missions presently uses a solid amine called HS-C. This August, on board STS-62, a new solid amine called HS-C+ will be used. HS-C+ uses the same amine and the substrate material, but a different preparation process. Forty-seven breakthrough tests have been conducted to characterize the performance of HS-C+. CO2 partial pressure, bed temperature, and H2O partial pressure were varied. Eleven HS-C breakthrough tests were also run to provide a direct comparison. Under all conditions tested, HS-C+ outperformed HS-C. Both materials adsorb all CO2 and H2O available at the start of a test when the beds are fully desorbed. As the bed becomes partially loaded, the CO2 and H2O adsorption rates decrease rapidly. HS-C+ continues adsorbing all CO2 and H2O available for a longer time. Greater surface area on HS-C+ may cause the improved performance.
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