首页>
外国专利>
Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions
Method and system for the disposal of coal preparation plant waste coal through slurry co-firing in cyclone-fired boilers to effect a reduction in nitrogen oxide emissions
展开▼
机译:在旋风锅炉中通过泥浆共烧处理选煤厂废煤的方法和系统,以减少氮氧化物的排放
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and system for the use of waste coal fines to reduce nitrogen oxides emissions from a coal-fired cyclone boiler. A coal water slurry including waste coal fines is injected as a co-firing fuel into a cyclone barrel of the cyclone boiler to partially oxidize the coal water slurry in a central portion of the cyclone barrel where injected. This produces a reducing zone having reducing gas species that convert nitrogen oxides to diatomic nitrogen. The coal water slurry can alternatively be injected into the cyclone barrel from a secondary combustion air conduit. The evaporation of the water from the coal water slurry reduces the overall combustion temperature in the cyclone barrel, further reducing the production of nitrogen oxides.
展开▼