"Air Toxics Emissions from Two Wood and RDF-Fired Fluidized Bed Combustors
"Air Toxics Emissions from Two Wood and RDF-Fired Fluidized Bed Combustors
Steven Klafka, P.E.
Wingra Engineering, S.C.
David Welder
Northern States Power Company
ABSTRACT
Northern States Power Company operates two
atmospheric
fluidized bed combustors (AFBC) in LaCrosse, Wisconsin. Each AFBC
is rated at 245 million BTU per hour while burning a 50/50 mixture of
woodwaste
and refuse derived fuel. Each AFBC is equipped with a
multicyclone
and electrified filter bed for air pollution control. Stack testing has
been conducted for the following air pollutants: particulates, carbon
monoxide,
hydrogen chloride, arsenic, benzene, beryllium, cadmium, chromium,
formaldehyde,
lead, mercury, nickel, zinc, polychlorinated dibenzo-p-dioxins and
polychlorinated
dibenzofurans. Results from stack tests at the facility are
summarized
and efforts to improve emissions control are described. Results
from
an air quality impact analysis and risk assessment are summarized, and
compliance with state and federal air quality regulations is addressed.