Fluidized bed combustion systems integrating CO2 capture with CaO.
Capturing CO2 from large-scale power generation combustion systems such as fluidized bed combustors (FBCs) may become important in a CO2-constrained world. Using previous experience in capturing pollutants such as SO2 in these systems, we discuss a range of options that incorporate capture of CO2 with CaO in FBC systems. Natural limestones emerge from this study as suitable high-temperature sorbents for these systems because of their low price and availability. This is despite their limited performance as regenerable sorbents. We have found a range of process options that allow the sorbent utilization to maintain a given level of CO2 separation efficiency, appropriate operating conditions, and sufficiently high power generation efficiencies. A set of reference case examples has been chosen to discuss the critical scientific and technical issues of sorbent performance and reactor design for these novel CO2 capture concepts.
Abanades
J Carlos
JC
Instituto Nacional del Carbón (CSIC), Oviedo, Spain. abanades@incar.csic.es
Anthony
Edward J
EJ
Wang
Jinsheng
J
Oakey
John E
JE
D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry* / Q000302:isolation & purification; D000397:Air Pollution / Q000517:prevention & control*; D018533:Biomass; D002119:Calcium Carbonate / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D017745:Incineration; D010087:Oxides / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*
D000393:Air Pollutants; D017610:Calcium Compounds; D010087:Oxides; D002245:Carbon Dioxide; C016538:lime; D002119:Calcium Carbonate