PROCESS FOR GENERATING ELECTRICITY AND CONCENTRATED CARBON DIOXIDE

摘要

A process for the generation of electricity and the production of a concentrated carbon dioxide stream using a molten carbonate fuel cell (1). Anode off-gas is at least partly fed to a catalytic afterburner (9) wherein it is oxidised with an oxidant consisting of part of the cathode off-gas and/or part of a molecular oxygen containing external oxidant stream, which externa l oxidant stream comprises at most 20% (v/v) nitrogen. The oxidised anode off- gas is brought into heat~exchange contact with the remainder of the cathode off-gas and the remainder of the external oxidant stream to obtain cooled anode off-gas and a heated mixture of cathode off-gas and external oxidant which are fed to the cathode chamber (13) as the cathode inlet gas. As soon as a set point in the carbon dioxide concentration at the cathode chamber outle t is reached, part of the cooled anode off-gas is withdrawn from the process.< /SDOAB>