This is a good starting point to begin researching what is really going on in this field.
http://cornerstonemag.net/overview-of-oxy-fuel-combustion-technology-for-co2-capture/
One significant advantage of the PCC process is that it can produce very high-purity CO2 ready to be compressed and transported, which is not the case for the oxy-fuel process. The main penalties of PCC are due to the requirement for solvent regeneration and solvent loss. Many research activities are currently addressing these issues.7 PCC is sometimes considered a “messy†technology because of its use of large amounts of chemical solvent and the size of the equipment. The use of chemical solvent also gives PCC an edge in retrofitting existing power plants and in building the so-called “CO2 capture ready†power plants. One perceived weakness of PCC technology is that it requires very clean flue gas to minimize solvent loss due to impurity contamination. (This requirement also has ramifications when retrofitting existing power plants with PCC as most of the flue gas cleaning equipment will likely have to be upgraded as well.) Again, this disadvantage can be turned into an advantage because the PCC train can be easily turned off during periods when CO2 capture is not necessary (for example, when the power plant has reached its annual CO2 capture goal) while meeting emissions requirements for other air pollutants. Currently, SaskPower of Canada is retrofitting a 150-MWe unit at its Boundary Dam location resulting in a 110-MWe PCC power plant. Note also that there are several other large-scale PCC-based power plants either under construction or being planned around the world.
http://cornerstonemag.net/overview-of-oxy-fuel-combustion-technology-for-co2-capture/
One significant advantage of the PCC process is that it can produce very high-purity CO2 ready to be compressed and transported, which is not the case for the oxy-fuel process. The main penalties of PCC are due to the requirement for solvent regeneration and solvent loss. Many research activities are currently addressing these issues.7 PCC is sometimes considered a “messy†technology because of its use of large amounts of chemical solvent and the size of the equipment. The use of chemical solvent also gives PCC an edge in retrofitting existing power plants and in building the so-called “CO2 capture ready†power plants. One perceived weakness of PCC technology is that it requires very clean flue gas to minimize solvent loss due to impurity contamination. (This requirement also has ramifications when retrofitting existing power plants with PCC as most of the flue gas cleaning equipment will likely have to be upgraded as well.) Again, this disadvantage can be turned into an advantage because the PCC train can be easily turned off during periods when CO2 capture is not necessary (for example, when the power plant has reached its annual CO2 capture goal) while meeting emissions requirements for other air pollutants. Currently, SaskPower of Canada is retrofitting a 150-MWe unit at its Boundary Dam location resulting in a 110-MWe PCC power plant. Note also that there are several other large-scale PCC-based power plants either under construction or being planned around the world.
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