A HIGH EFFICIENT COMBUSTION (NR-LE) METHOD FOR LIGNITE FIRING UNITS

摘要

It could be said that the history of Low NO_x burners for coal combustion started in early 1980's in Japan. Then "rapid ignition" phenomenon was first time introduced. The first installation was to the 200 MW power plant Toyama Shinko in Japan, where the existing dual register burners were replaced with Hitachi-NO_x reduction (HT-NR) burners and as a consequence NO_x emissions reduced drastically with increasing combustion efficiency. This was the starting point of the NR burner series (Figure 1).