Recovery Facility: Emissions Data
Opacity | Carbon
monoxide | Hydrogen
chloride | Sulfur
dioxide | Nitrogen
oxides | Health
Carbon monoxide (CO) is formed due to incomplete combustion
of waste in the furnace. The quantity of CO formed depends on the combustion
temperature, available combustion air, amount of turbulence and the amount
of time the exhaust gas remains in the burner. The amount of CO formed
during combustion can be minimized by adjusting the above parameters.
At the Resource Recovery Facility, the waste feed rate and
the overfire/underfire combustion air are controlled to maintain the above
parameters at optimum levels. In addition, the combustion temperature
is generally maintained at 2000 °F or higher (the permit requires
a minimum combustion temperature of 1800 °F) to ensure near-complete
combustion of waste, thus minimizing CO.
The CO levels in the stack plume have generally been less
than 30 parts per million (ppmv), compared to the permit level of 200
ppmv, averaged for 1 hour, 100 ppmv averaged for 4 hours, or 50 ppmv averaged
over 24 hours.
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