IECM 12.0 beta User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > SET PARAMETERS > CO2 Capture, Transport & Storage > 1. Solid Sorbents PSA >

Retrofit or Adjustment Factors

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See Retrofit or Adjustment Factor Inputs for an explanation of retrofit costs. The solid sorbents PSA system has the following capital cost process areas:

•Flue Gas Cooler and Condenser: This is the cooler and condenser for inlet flue gas.

•PSA System: This is a fixed-bed PSA system.

•Flue Gas Blower: The flue gas enters the bottom of the absorber column and flows upward, countercurrent to the sorbent flow. Blowers are required to overcome the substantial pressure drop as it passes through a very tall absorber column. The cost is a function of the volumetric flow rate of the flue gas.

•Heat Exchangers: The CO2-loaded sorbent must be heated in order to strip off CO2 and regenerate the sorbent. In addition, the regenerated sorbent must be cooled down before it can be recirculated back to the absorber column. Heat exchangers are used to accomplish these two tasks. This area is a function of the sorbent flow rate.

•Exhaust Flue Gas Expander: This is the expander for flue gas exiting the PSA system.

•Vacuum Pump: This is the vacuum pump used for the CO2 product stream.

•Compressing CO2 Product Stream: The CO2 product stream is compressed to atmospheric pressure from vacuum.

•CO2 Purification and Compression: A cryogenic purification unit (CPU) is used to purify, dry and compress the CO2 in preparation for transport.