Abstract
To investigate the differences in emissions performance between wood chip and oil-fired boilers under real-world operating conditions, a series of stack tests were performed to measure air pollutant emissions at a wood chip stoker boiler with multi-cyclone emission controls. This type of wood combustion boiler technology (inclined grate stoker boiler with a heat input rating between 880 and 4700 kW) represents the largest number of installations in the northeastern United States. The monitored air pollutant stack emissions from the wood chip boiler were compared to those from an oil-fired boiler used as backup at the same location. The stack test results found that total particulate matter emissions from the wood-fired boiler with a multi-cyclone emission control device were almost 30 times higher on a mass per energy input basis than the oil-fired boiler burning No. 2 distillate oil with 2.2 g kg−1 sulfur content under similar real-world operating conditions.
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