Development of the Nitrogen Fixation System for CELSS III. NH3 Separation by PSA in Atmospheric Synthesis Loop

Paper #:
  • 932250

Published:
  • 1993-07-01
Citation:
Numaguchi, T., Inada, Y., Kanki, R., Sakata, Y. et al., "Development of the Nitrogen Fixation System for CELSS III. NH3 Separation by PSA in Atmospheric Synthesis Loop," SAE Technical Paper 932250, 1993, https://doi.org/10.4271/932250.
Pages:
9
Abstract:
The front half of the nitrogen fixation system, which is one of the subsystems of Controlled Ecological Life Support System (CELSS), or NH3 synthesis loop at atmospheric pressure, was studied. The NH3 separation essential in the loop is discussed. The NH3-PSA method was newly developed, since the NH3-PSA was evaluated best among separation methods from the viewpoints of CELSS criteria. It is essential to retain the H2/N2 ratio in the outlet gas the same as that of the inlet gas to the PSA. From the experimental result of PSA a material balance of the NH3 synthesis loop was calculated. Additionally a material balance of the overall process was calculated by assuming some performances in the down stream sections of the NH3 synthesis loop.
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