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Separation of CO2/H2 Gas Mixture Using Novel 4-Bed and 3-Bed Pressure Swing Adsorption Process 1.2 1 0.8 0.6 0.4 0.2 0 Blowdown Blowdown Stripping Pressurization 0 0.5 1 L Figure 4. Variation of concentration with bed length for 3-Bed PSA (97% Purity) 7000 6000 5000 4000 3000 2000 1000 0 0 0.5 L 1 Enriching Stripping BlowdownPressurization Figure 5. Variation of amount adsorbed in solid phase with bed length for 4-Bed PSA (97% Purity) 1.2 1 0.8 0.6 0.4 0.2 0 BlowdownEnriching StrippingPressurization 0 0.5L1 Figure 6. Variation of concentration with bed length for 4-Bed PSA (97% Purity) 5. CONCLUSIONS The simulation results show that in 3-Bed PSA relatively high productivity can be achieved for high purity requirements of both products CO2 and H2. However, as the purity requirement is lowered the two processes give nearly same performance. The 3-bed PSA appears to be promising for CO2-H2 separation, however the results are only based on simulation and it warrants experimental validation. REFERENCES [1] Sircar S. , Separation Of Methane And Carbon Dioxide Gas Mixtures By Pressure Swing Adsorption, Separation Science Technologies,23,519-529 (1988) [2] G. Spoorthi, R.S. Thakur, Nitin Kaistha, D.P. Rao, Process intensification in PSA processes for upgrading synthetic landfill and lean natural gases, Adsorption,17,121-133 (2011) [3] Sivakumar, S.V.: Sharp separation and process intensification in adsorptive separation processes. Ph.D. thesis, Dept. of Chemical Eng. Indian Institute of Tech., Kanpur, India (2007) International Journal of Advanced Research in Chemical Science (IJARCS) Page 21 X CO2, mol/m3 q CO2, mol/m3 X CO2, mol/m3 PDF Image | Separation of CO2 H2 Gas Mixture Using PSA
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