TY - GEN
T1 - Continuous separation of CO2 from H2 + CO2 gas mixture utilizing clathrate hydrate for integrated gasification combined cycle power plants
AU - Horii, Shunsuke
AU - Ohmura, Ryo
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2019/1/25
Y1 - 2019/1/25
N2 - In this study, the CO2 continuous separation experiments were performed in the system of H2 + CO2 + H2O and H2 + CO2 + tetra-n-butylammonium bromide (TBAB) + H2O for TBAB mass fraction, wTBAB of 0 (the water system), 0.05, 0.10, 0.32. The time evolutions of compositions in the gas phase and the hydrate slurry were measured. The H2 compositions in the gas phase for wTBAB of 0, 0.05, and 0.10 reached steady state at 0.87, 0.81, and 0.78 while the CO2 compositions in the hydrate slurry were 1.00, 0.82, 0.79, respectively. It is shown that the experiments succeed in continuously separating CO2 with structure I hydrate and ionic semiclathrate hydrate. On the other hand, the hydrate transportation problem in separation process occurred for wTBAB = 0.32. For wTBAB = 0, the highest values of H2 compositions in the gas phase and CO2 compositions in hydrate slurry were obtained. The concentration of captured CO2 for wTBAB = 0 was comparable to that obtained by multistage process in hydrate-based gas separation or chemical absorption used in the demonstration project of integrated gasification combined cycle.
AB - In this study, the CO2 continuous separation experiments were performed in the system of H2 + CO2 + H2O and H2 + CO2 + tetra-n-butylammonium bromide (TBAB) + H2O for TBAB mass fraction, wTBAB of 0 (the water system), 0.05, 0.10, 0.32. The time evolutions of compositions in the gas phase and the hydrate slurry were measured. The H2 compositions in the gas phase for wTBAB of 0, 0.05, and 0.10 reached steady state at 0.87, 0.81, and 0.78 while the CO2 compositions in the hydrate slurry were 1.00, 0.82, 0.79, respectively. It is shown that the experiments succeed in continuously separating CO2 with structure I hydrate and ionic semiclathrate hydrate. On the other hand, the hydrate transportation problem in separation process occurred for wTBAB = 0.32. For wTBAB = 0, the highest values of H2 compositions in the gas phase and CO2 compositions in hydrate slurry were obtained. The concentration of captured CO2 for wTBAB = 0 was comparable to that obtained by multistage process in hydrate-based gas separation or chemical absorption used in the demonstration project of integrated gasification combined cycle.
KW - CO separation
KW - Clathrate hydrate
KW - Ionic semiclathrate hydrate
KW - Tetra-n-butylammonium bromide (TBAB)
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U2 - 10.1109/ICPESYS.2018.8626934
DO - 10.1109/ICPESYS.2018.8626934
M3 - Conference contribution
AN - SCOPUS:85062498540
T3 - 2018 8th International Conference on Power and Energy Systems, ICPES 2018
SP - 212
EP - 216
BT - 2018 8th International Conference on Power and Energy Systems, ICPES 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Power and Energy Systems, ICPES 2018
Y2 - 21 December 2018 through 22 December 2018
ER -