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

Performance

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Inputs for the performance of the amine system in PC and NGCC plants are entered on the Performance parameter screen.

The amine-based absorption system for CO2 removal is a wet scrubbing operation. This process removes other acid gases and particulate matter in addition to CO2 from the flue gas. The following parameters are provided:

•Maximum CO2 Removal Efficiency: (PC plants only) This parameter specifies the maximum efficiency possible for the absorber on an annual average basis. The value is used as a limit in calculating the actual CO2 removal efficiency for compliance. When the Cansolv system is chosen, this parameter is fixed at 90%.

•Absorber CO2 Removal Efficiency: This is the actual removal efficiency of the absorber alone. When the Cansolv system is chosen, this parameter is fixed at 90%.

•Other Removals:

•SO2 Removal Efficiency: SO2 is removed at a very high rate. The default efficiency is 100%.

•SO3 Removal Efficiency: SO3 is removed at a very high rate. The default efficiency is 99.5%.

•NO2 Removal Efficiency: A small amount of NO2 is removed. The default efficiency is 0%.

•HCl Removal Efficiency: HCl is removed at a high rate. The default efficiency is 95%.

•Particulate Removal Efficiency: Particulates are removed in any wet scrubbing system at a rate of approximately 50%.

•Trace Removals: (currently only shown in NGCC plants)

•Mercury Removal Efficiency (oxidized): This is the removal efficiency of the oxidized portion of mercury from the CO2 absorber. The removed portion can be found in the bottom ash and the remainder found in the flue gas.

•Mercury Removal Efficiency (elemental): This is the removal efficiency of the elemental portion of mercury from the CO2 absorber. The removed portion can be found in the bottom ash and the remainder found in the flue gas.

•Maximum Train CO2 Capacity: The default maximum train size is used with the actual CO2 capture rate to determine the number of trains required.

•Number of Operating Absorbers: This is the total number of operating absorber vessels. It is determined by the train capacity specified above and is used primarily to calculate capital costs. The value must be an integer.

•Number of Spare Absorbers: This is the total number of spare absorber vessels. It is used primarily to calculate capital costs. Up to two spare absorbers may be specified.

•Maximum CO2 Compressor Capacity: This is the maximum amount of CO2 product that can be compressed per hour at the specified pressure (see the T&S Config screen).

•Number of Operating CO2 Compressors: This is the total number of operating CO2 compressors. It is used primarily to calculate capital costs. The value must be an integer.

•Number of Spare CO2 Compressors: This is the total number of spare CO2 compressors. It is used primarily to calculate capital costs. Up to two spare CO2 compressors may be specified.

•Makeup H2O Factor for Aux. Cooling: (Only shown when an Air Cooled Condenser is used for plant cooling.) When CCS and an Air Cooled Condenser are used, the CCS system uses an auxiliary cooling system. This parameter specifies the amount of makeup water required for the auxiliary cooling system.

•Amine Scrubber Power Requirement: This is the equivalent electrical output of thermal (steam) energy used for reheat, plus the actual electrical power required for pumps and booster fans.