IECM 12.0 beta User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > SET PARAMETERS > CO2 Capture, Transport & Storage > 2. FG Recycle & Purification >

Retrofit or Adjustment Factors

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See Retrofit or Adjustment Factor Inputs for an explanation of retrofit costs. The flue gas recycle and purification system has the following capital cost process areas:

•Boiler Modifications: In case of a pre-existing PC plant being retrofitted for CO2 capture, the boiler must be modified to suit the new oxyfuel combustion system. The cost for these modifications is estimated as a percentage of the cost of the boiler.

•Flue Gas Recycle Fan: The cost of the fan required for recycling part of the flue gas is scaled on the basis of the flow rate of the flue gas being recycled.

•Flue Gas Recycle Ducts: Additional ducting is necessary to recycle part of the flue gas in the oxyfuel combustion system. The cost of this ducting is assumed to be a function of the flow rate of recycled flue gas.

•Direct Contact Cooler: The cost of the flue gas cooler is scaled on the basis of the flow rate of the flue gas.

•CO2 Cryogenic Purification Unit: The CPU purifies, dries, and compresses the CO2 product stream for transport over long distances.