METHOD FOR TREATING FLUE GAS OF BOILER USING OIL OF HIGH SULFUR CONCENTRATION

摘要

PROBLEM TO BE SOLVED: To provide a method for treating the exhaust gas of a boiler using oil of a high sulfur concentration which can inject a proper amount of ammonia into the exhaust gas. SOLUTION: In the method in which ammonia from an injection means 22 is injected into the exhaust gas discharged from the boiler 12 using the oil of a high sulfur concentration as fuel, and the exhaust gas is sent to an electric precipitator 16 to remove dust in the exhaust gas, a controller 26 for adjusting the amount of ammonia to be injected corresponding to the change of a combustion oxygen concentration in the exhaust gas into which ammonia is injected is provided.