A considerable increase in the global atmospheric CO2 concentration has raised concern about climate change and has led to a worldwide effort in R&D on control of CO2 emissions. The separation of CO2 from flue gas of a gas-/coal-fired power plant was studied. The composition of the gas-fired flue gas was 7.4-7.7% CO2, 14.6% H2O, ∼ 4.45% O2, 50 ppm CO, 420 ppm NOx, 420 ppm SO2, and 76-77% N2. CO2 could be selectively separated from the flue gases of power plant by using the novel "molecular basket" adsorbent MCM-41-PEI-50. The adsorbent hardly adsorbed any N2, O2, and CO. The selectivity of CO2/NOx was 2.5 for gas-fired flue gas and the selectivity of CO2/SO2 and CO2/NOx were 10.7 and 2.86 for coal-fired flue gas, respectively. Very little NOx and SO2 desorbed after adsorption indicating the need for pre-removal of NOx and SO2 from the flue gas before capture of CO2 by the PEI based "molecular basket" adsorbent.
|Original language||English (US)|
|Number of pages||2|
|Journal||ACS Division of Fuel Chemistry, Preprints|
|Publication status||Published - Mar 1 2003|
|Event||Proceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference - San Antonio, TX, United States|
Duration: Mar 10 2003 → Mar 12 2003
All Science Journal Classification (ASJC) codes