Technologies for Converting Biomass to Useful Energy

80 K. Annamalai et al.

Figure 3.41. Effect of residence time on NO

x

reduction by NH

3

at 1100 K.

high amount of NH

3

, coal:FB blends result in lesser NH

3

concentration; similarly lesser reburn

heat input will result in lesser NO

x

(Oh, 2008).

It is apparent that coal and FB can both be successfully used a reburn fuel in order to reduce

NO in a boiler burner. Feedlot Biomass is almost two times more effective as a reburn fuel than

coal. The NO reduction is more effective at higher reburn equivalence ratios for coal; however,

the NO

x

reduction is almost independent of equivalenceratio for feedlot biomass. The behavior of

coal-biomass blends falls in between the ...