Reduce nitric oxide (NOx) emission from oxygen fuel combustion furnace

摘要

A plant for a combustion process. The plant has a furnace (12) to heat a material. A burner (16) is configured to combust a carbon-based fuel with an oxidization gas to provide a flame into the furnace. The oxidization gas has at least 80 weight percent oxygen. The furnace has an exhaust outlet (20, 22) providing communication between the furnace and a flue (26). The exhaust outlet is configured to remove an exhaust gas produced during the combustion of the carbon-based fuel from the furnace to the flue. A nozzle (30) located in the flue is configured to inject an ammonia in the flue, and thereby reduce the amount of NOx emissions in the exhaust gas.