Summary

 

The Summary screen uses a two table format to display a summary of information about the amine system in PC and NGCC plants.

The table on the left displays a summary of information that is key to the model calculations. This information is also available elsewhere in the model. The following important performance and cost factors are shown:

•Net Electrical Output: This is the net plant capacity, which is the gross plant capacity minus the losses due to plant equipment and pollution equipment (energy penalties).

•Annual Operating Hours: This is the number of hours per year that the plant is in operation. If a plant runs 24 hours per day, seven days per week, with no outages, the calculation is 24 hours / 365 days , or 8760 hours/year.

•Annual CO2 Removed: This is the amount of CO2 removed from the flue gas by the CO2 capture system per year.

•Annual SO2 Removed: This is the amount of SO2 removed from the flue gas by the CO2 capture system per year.

•Annual SO3 Removed: This is the amount of SO3 removed from the flue gas by the CO2 capture system per year.

•Annual NO2 Removed: This is the amount of NO2 removed from the flue gas by the CO2 capture system per year.

•Annual HCl Removed: This is the amount of HCl removed from the flue gas by the CO2 capture system per year.

•Flue Gas Fan Use: The flue gas has to be compressed in a flue gas blower so that it can overcome the pressure drop in the absorber tower. This is the electrical power required by the blower.

•Sorbent Pump Use: The solvent has to flow through the absorber column (generally through packed media) countercurrent to the flue gas flowing upwards. This is the power required by the solvent circulation pumps to supply pressure to overcome the pressure losses encountered by the solvent in the absorber column.

•CO2 Compression Use: This is the electrical power required to compress the CO2 product stream to the designated pressure. Compression of CO2 to high pressures takes lot of power, and is a principle contributor to the overall energy penalty of a CO2 capture unit in a power plant.

•Auxiliary Power Produced: If an auxiliary natural gas boiler is used to provide steam and power for the amine system, this is the additional electricity that it produces.

•Sorbent Regen. Equiv. Energy: This is the electrical equivalent power for the regeneration steam required (taken from the steam cycle). The equivalent electricity penalty is about 10-15% of the actual regeneration heat requirement.

•Makeup Water for Aux. Cooling: (Only shown when an Air Cooled Condenser is configured.) An auxiliary cooling system is needed for amine-based carbon capture when an Air Cooled Condenser (for dry cooling) is chosen as the plant cooling system for a PC or NGCC plant. This is the makeup water required for the auxiliary cooling system.

The table on the right is a standard Cost of CO2 Avoided & Captured table.

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