A method and system for controlling a stoichiometric EGR system on a regenerative reheat system

Various embodiments of the present invention provide a S-EGR process and system 100 that yields an exhaust stream 270 that includes a relatively high concentration of a desirable gas and is also substantially oxygen-free. This desirable gas includes, but is not limited to: Carbon Dioxide (CO2), Nitrogen (N2), or Argon.