Title: Carbon Capture Approaches for Natural Gas Combined Cycle Systems
Publication Number: DOE/NETL-2011/1470
Publication Date: 01/2011
Publication Type: Report/Publication
Contact: Walter Shelton
Program/Technology: Carbon Sequestration
Author: Walter Shelton (NETL)
James Black (NETL)
Allison Kyle (Booz Allen Hamilton)
Wen-Ching Yang (Booz Allen Hamilton)
Norma Kuehn (Booz Allen Hamilton)
Mark Woods (Booz Allen Hamilton)

This study develops ASPEN PLUS simulation models and cost estimates for Natural Gas Combined Cycle plants with CO2 capture. Three approaches for carbon capture are examined: pre-combustion, post-combustion and oxy-combustion. In pre-combustion carbon capture, the carbon in the fuel is converted to CO2 and removed before the combustion process, whereas in post-combustion, the more dilute CO2 is separated from the flue gas at a lower pressure. Oxy-combustion technologies use nearly pure oxygen as the oxidant so that the flue gas consists primarily of CO2 and water vapor. Case results are compared with a reference plant based on an 7F frame combustion turbine.

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