The Techno-Economic Analysis of Reducing NOx of Industrial Boiler by Recycled Flue Gas

摘要

The quantity of industrial boiler is huge in our country, consuming the coal is about 350Mt/a, so a large number of NOx is emitted every year. It is a complex technology to reduce the emission of NOx. There are various methods according to different control mechanism, from the angel of technology and economy, the feasibility of industrial boilers reducing NOx by recycled flue gas is ananlyzed and get the decrease of NOx is between 30% and 40%. It is a mature, simple technology, lower investment and low cost of runs, what's more offers the reference of the NOx emission control technical reformation for industrial boilers, at last make some suggestions for the emission of NOx.