Optimization For Reduce NOx Emission Of Lean Coal Storage Puiverizing Boiler

The thesis research object is a power plant boiler's combustion system reduce NOx emission optimization. The boiler was designed for lean coal storage pulverizing system. In the early years of the boiler running,it's NOx emission number was 1285.3 mg/Nm3and 1343.1 mg/Nm3.It was about 1100 mg/Nm3 before this reform.Through the experiment before reform, the combustion system reform and adjustment test, The NOx emissions of this boiler was reduced very much.When the reform was finished the boiler NOx emission number was about 903 mg/Nm3,After the adjustment test it was about 760 mg/Nm3. And the reform did not affect the boiler efficiency and lowest no oil stable-combustion load. Achieved good economic benefit and social benefit.At last the thesis summarize this research.And give some reasonable advices for boiler's running,reform and design.