|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F23B-005/00 F23C-009/00 F23G-007/06|
|미국특허분류(USC)||110/212 ; 110/214 ; 110/345 ; 422/183|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 43 인용 특허 : 2|
An apparatus and method for reducing nitrogen oxide emissions from furnace flue gas is provided in which a pulse generator introduces natural gas, or other fluid fuel which has little or no fixed nitrogen, into the upper portion of the furnace. The fuel pulse reacts with the nitrogen oxide in the flue gas to form ammonia-like compounds and nitrogen gas. These ammonia-like compounds react with additional amounts of nitrogen oxide in the flue gas to form nitrogen gas, water vapor and carbon dioxide. In this manner, the amount of nitrogen oxide in the flue ...
An improved apparatus for reducing nitrogen oxide in flue gas in a furnace wherein a fuel is burned in a primary combustion zone to produce a flue gas containing nitrogen oxide wherein the improvement comprises: at least one pulse combustor attached to the furnace above the primary combustion zone which introduces into the flue gas pulses of a fluid selected from the group of fluids consisting of natural gas, CxHy compounds and CxHyO2 compounds and one of air, flue gas, and a combination of air and flue gas.