Page 116 - Boiler plant and distribution system optimization manual
P. 116
Boiler Tuneup 101
Table 9.1—Troubleshooting chart for problems with smoke.
Note: These tests and adjustments should only be surement of average conditions for the burner
conducted with a through understanding of the being adjusted. When the maximum smoke spot
test objectives and following a systematic, orga- number, for oil or the maximum carbon mon-
nized plan. oxide level for natural gas is reached it should
be noted along with the corresponding burner
Instruments settings. Flame instability is sometimes a limiting
The minimum limits of excess air should be factor on reducing excess air. In stoker fired boil-
approached cautiously with flue gas analyzers ers, the onset of clinkering or overheating of the
which continuously provide an accurate mea- grate sometimes precedes the formation of smoke
