SEPARATION OF CO2 FROM FLUE GASES BY CARBON-MULTIWALL CARBON NANOTUBE MEMBRANES

Andrews, Rodney

National Energy Technology Laboratory (U.S.)

关键词: Packed Beds;    Membranes;    Carbon Dioxide;    01 Coal, Lignite, And Peat;    Membrane Transport;   

DOI  :  10.2172/792162
RP-ID  :  FG26-00NT40825--02
RP-ID  :  FG26-00NT40825
RP-ID  :  792162

美国|英语

来源: UNT Digital Library

【 摘 要 】

Multiwalled carbon nanotubes (MWNT) were found to be an effective separation media for removing CO{sub 2} from N{sub 2}. The separation mechanism favors the selective condensation of CO{sub 2} from the flowing gas stream. Significant uptakes of CO{sub 2} were measured at 30 C, 150 C and 300 C over the pressure range 0.5 to 5 bar. No measurable uptake of nitrogen was found for this range of conditions. The mass uptake of CO{sub 2} by MWNT was found to increase with increasing temperature. A packed bed of MWNT completely removed CO{sub 2} from a flowing stream of CO{sub 2}/N{sub 2}, and exhibited rapid uptake kinetics for CO{sub 2}.