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  1. 2 Chemical and Process Engineering

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  1. 2 2014

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  1. 2 Juszczak M.

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Concentrations of Carbon Monoxide and Nitrogen Oxides From a 25 kW Boiler Supplied Periodically and Continuously with Wood Pellets

100%
Juszczak M.
Chemical and Process Engineering
|
2014
|
vol. 35
|
issue 2
163-172
EN
The impact of the fuel feeding mode (continuous or periodic with different stand-by/operation time ratios) on carbon monoxide (CO) and nitrogen oxides (NO, NOx) concentration values in the flue gas was analysed for coniferous wood pellet firing. Experiments were performed in a 25 kW water boiler equipped with an over-fed wood pellet furnace located in a full scale heat station simulating real-life conditions. Influence of oxygen concentration and temperature in the combustion chamber on carbon monoxide and nitrogen oxide concentrations was presented in diagrams. Dust and hydrocarbon concentrations were also monitored. It was concluded that the commonly used periodic fuel supply does not necessarily cause a significant increase of carbon monoxide concentration, as compared to the continuous fuel feeding mode. Continuous fuel supply can even induce higher carbon monoxide concentrations when fuel mass stream is not chosen properly. Each time new fuel type is used in a specific furnace, one should perform experiments to determine the adequate settings (stand-by/operation time ratio, fuel mass streams, air stream) to obtain the optimal, lowest possible emission for a certain boiler heat output
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Concentrations of Carbon Monoxide and Nitrogen Oxides From a 25 kW Boiler Supplied Periodically and Continuously with Wood Pellets

86%
Juszczak M.
Chemical and Process Engineering
|
2014
|
issue 2
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