Patent ID: 7743861

Claim:
A system for generating electricity, comprising: a) a hydrocarbon reformer for producing reformate from hydrocarbon fuel; b) a fuel cell stack having anodes and cathodes for consuming said reformate to produce a first electric output, an anode tail gas, and a cathode tail gas; c) a source for providing oxygen as an oxidant for said system; d) a combustor for combusting at least a first portion of said anode tail gas with oxygen to produce a combustor tail gas, said combustor comprising a first combustor for combusting at least a portion of said first portion of said anode tail gas with oxygen to form a first combustor tail gas; and e) an electrical generator system for receiving said combustor tail gas to produce a second electric output and a generator tail gas containing water and carbon dioxide, said electrical generating system comprising a first stage gas turbine for receiving said first combustor tail gas and for generating a first stage turbine tail gas. and a second combustor for combusting said first stage turbine tail gas with additional oxygen to form a second combustor tail gas.