CARBON DIOXIDE CAPTURE FROM FLUE GAS USING DRY REGENERABLE SORBENTS

Green, David A. ; Turk, Brian S. ; Portzer, Jeffrey W. ; Gupta, Raghubir P. ; McMichael, William J. ; Liang, Ya ; Moore, Tyler ; Harrison, Douglas P.

Research Triangle Institute (United States)

关键词: Calcination;    Thermal Gravimetric Analysis;    01 Coal, Lignite, And Peat;    Sodium Carbonates;    Regeneration;   

DOI  :  10.2172/825566
RP-ID  :  NONE
RP-ID  :  FC26-00NT40923
RP-ID  :  825566

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report describes research conducted between April 1, 2003 and June 30, 2003 on the use of dry regenerable sorbents for concentration of carbon dioxide from flue gas. Grade 1 sodium bicarbonate performed similarly to grade 5 sodium bicarbonate in fixed bed testing in that activity improved after the first carbonation cycle and did not decline over the course of 5 cycles. Thermogravimetric analysis indicated that sodium bicarbonate sorbents produced by calcination of sodium bicarbonate are superior to either soda ash or calcined trona. Energy requirements for regeneration of carbon dioxide sorbents (either wet or dry) is of primary importance in establishing the economic feasibility of carbon dioxide capture processes. Recent studies of liquid amine sorption processes were reviewed and found to incorporate conflicting assumptions of energy requirements. Dry sodium based processes have the potential to be less energy intensive and thus less expensive than oxygen inhibited amine based systems. For dry supported sorbents, maximizing the active fraction of the sorbent is of primary importance in developing an economically feasible process.