Becher, V.; Bohn, J.-P.; Goanta, A.; Spliethoff, H.
A combustion concept for oxyfuel processes with low recirculation rate - experimental validation
Oxyfuel combustion is a technology for Carbon Capture & Storage from coal fired power plants. One drawback is the large necessary amount of recirculation of cold flue gases into the combustion chamber to avoid inadmissible high flame temperatures. The new concept of Controlled Staging with Non-stoichiometric Burners (CSNB) makes a reduction of the recirculation rate possible without inadmissible high flame temperatures. This reduction promises more compact boiler designs. We present in this paper experiments with the new combustion concept in a 3 x 70 kW natural gas combustion test rig with dry flue gas recirculation of 50