| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an exhaust gas recirculation burner capable of reducing concentration of NOcontained in exhaust gas and enabling stable combustion, and a boiler including the exhaust gas recirculation burner.SOLUTION: An exhaust gas recirculation burner 10 circulating part of exhaust gas to an air supply side and mixing it with fuel gas and combustion air to combust a mixture gas includes: a main combustion unit 20 that combusts pre-mixed gas in which fuel gas, combustion air and exhaust gas are mixed at a first mixture ratio; and plural flame holding parts 30 that are arranged so as to hold the main combustion unit 20, and combust pre-mixed gas, in which fuel gas, combustion air and exhaust gas are mixed, at a second mixture ratio having a lower rate of exhaust gas than the first mixture ratio and capable of forming flame stably.</p> |
