The project goal was to reduce NOx
emissions by 70% by the combined use
of LNBs and GR. Tests were performed
on the GR system by varying operational
control parameters to assess the
effect on boiler emissions, completeness
of combustion, thermal efficiency, and
heat rate. A long-term testing program
was performed to evaluate the consistency
of system operations, assess the
impact of long-term operation on the
boiler, gain experience in operating GRLNB
in a normal load-following environment,
and develop a database for use
in subsequent applications. The coal
burned during this demonstration was
a Western bituminous coal with a sulfur
content of 0.45% and a nitrogen
content of 1.5%.