EXHAUST GAS MIXING DEVICE

摘要

PROBLEM TO BE SOLVED: To increase an exhaust gas mixing ratio to a maximum value and enhance the operation ratio of a plant operation efficiency. SOLUTION: This device is provided with a plurality of mixers 303 having an exhaust gas injection part and an opening 306 which discharges the exhaust gas into the combustion air passage 301 at a joining area between a combustion air 301 where a combustion air 302 is supplied and an exhaust gas passage which supplies exhaust gas whose oxygen concentration is lower than the combustion air 302 and is arranged to mix the combustion air with the exhaust gas whose oxygen concentration is lower than the combustion air. In this case, an exhaust gas injection rate control means 307 is provided wholly or partially in the inlet of a plurality of mixers 30 in order to control the exhaust gas injection rate.