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

Config - Capture

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Configuration parameters related to capture in the solid sorbents TSA system are found on the Config - Capture parameter screen. The following parameters are shown:

•System Used: CCSI/NETL 32D is currently the only choice.

•Auxiliary Gas Boiler?: An auxiliary natural gas-fired boiler can be added to the amine system. When used, the original steam cycle of the power plant remains undisturbed and the net power generation capacity of the power plant is not adversely affected. The auxiliary boiler comes at an additional cost of capital requirement for the boiler (and turbine) and the cost of supplemental fuel. Also, the auxiliary boiler adds to the CO2 and NOx emissions. When an auxiliary boiler is added, an additional process type, Auxiliary Boiler System, is added; both parameters and results are provided. The following options are available:

•None: (This is the default.) An auxiliary gas boiler is not used.

•Steam Only: An auxiliary gas boiler is used to generate low pressure steam for sorbent regeneration.

•Steam + Power: An auxiliary gas boiler is used to generate low pressure steam for sorbent regeneration and separate power for the amine system.

•CO2 Product Compressor Used: The CO2 product stream may need to be compressed for transportation to a sequestration site. This parameter determines whether or not a CO2 product compressor is used.

•Compressor Type: (Only shown when a CO2 product compressor is used.) This parameter determines whether the CO2 product compressor is a 6- or 8-stage compressor.

•Direct Contact Cooler (DCC) Used?: A DCC is configured by default to cool the flue gas before it enters the solid sorbents TSA system. The lower flue gas temperature enhances the absorption reaction and decreases the flue gas volume. The typically acceptable range of flue gas temperature is about 120-140 degrees F. A DCC is often not needed if a wet FGD is installed upstream.

•SO2 Polisher Used?: This parameter determines whether or not an SO2 polisher is used to reduce the flue gas SO2 concentration. Standard wet FGD or sprayer units do not reduce the SO2 concentration sufficiently to the designated level for carbon capture pre-treatment.

•SO2 Polisher Outlet Concentration: (Only shown when an SO2 polisher is used.) This is the SO2 concentration exiting the polisher. This value is used to determine the amount of reagent required. The default is based on the sorbent.

•Temperature Exiting DCC: (Only displayed when a DCC is used.) This is the temperature exiting the DCC. The desirable temperature of the flue gas entering the CO2 capture system is about 113-122 degrees F. If the inlet temperature to the DCC is at or below this temperature, the DCC is not used.

•Sorbent Properties:

•Name: NETL 32D is currently the only option.

•Specific Heat: This is the specific heat of the sorbent.

•Langmuir (single-site) Model Parameters:

•Maximum CO2 Adsorption Capacity: This is the maximum CO2 adsorption capacity of the sorbent.

•Water Effect on CO2 Capacity: This is the effect of water on the CO2 adsorption capacity of the sorbent. It is added to the parameter above.

•Langmuir Parameter: This is the Langmuir constant.

•Heat of Reaction: This is the heat of reaction.