Flue Gas Recirculation System for Biomass Heating Boilers—Research and Technical Applications for Reductions in Nitrogen Oxides (NOx) Emissions

Bartosz Ciupek; Rafał Urbaniak; Dobrosława Kinalska; Zbigniew Nadolny

doi:10.3390/en17010259

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Tytuł

Flue Gas Recirculation System for Biomass Heating Boilers—Research and Technical Applications for Reductions in Nitrogen Oxides (NOx) Emissions

Autorzy

Bartosz Ciupek (WIŚiE) ^{[ 1 ][ 2.10 ][ P ]}
Rafał Urbaniak
Dobrosława Kinalska (WIŚiE) ^{[ 1 ][ S ]}
Zbigniew Nadolny (WIŚiE) ^{[ 2 ][ 2.10 ][ P ]}

^{[ 1 ]} Instytut Energetyki Cieplnej, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | ^{[ 2 ]} Instytut Elektroenergetyki, Wydział Inżynierii Środowiska i Energetyki, Politechnika Poznańska | ^{[ P ]} pracownik | ^{[ S ]} student

Dyscyplina naukowa (Ustawa 2.0)

[2.10] Inżynieria środowiska, górnictwo i energetyka

Rok publikacji

2024

Opublikowano w

Energies

Rocznik: 2024 | Tom: vol. 17 | Numer: iss. 1

Typ artykułu

artykuł naukowy

Język publikacji

angielski

Słowa kluczowe

EN

heating boiler
biomass
recirculation system
harmful substances
emission

Streszczenie

EN The paper discusses the results of investigations of the change in thermal and emission-related parameters of a heating boiler fueled with biomass after a modification with a proprietary flue gas recirculation system made for this type of equipment. The results provide insight into the combustion process with a multistage flue gas recirculation that materially affected the boiler operation: a reduction in the mass concentration of nitrogen oxides (NOx) by reducing the combustion temperature. The authors also observed a reduction in the emission of particulate matters (PM) and carbon monoxide (CO). For the investigations, the authors used a heating boiler fitted with an automatic fuel feed (timber pellets) and a proprietary patented flue gas recirculation system (Polish patent Pat. 243395) for low power solid fuel heating boilers. Aside from the measurement of the mass concentration of the emitted pollutants, the research focused on the measurements of the temperature inside the combustion chamber, the temperature of the flue gas and the level of oxygen in the flue gas. The aim of the research was to confirm the validity of using the flue gas recirculation technique to reduce emissions of harmful substances from biomass heating boilers, as a technique not previously used for this group of devices. Moreover, the aim of the research was to test an original engineering solution, in the form of a flue gas distribution valve, and investigate its effect on reducing NOx emissions and improving other thermal and emission parameters of the boiler. The obtained research results confirm the validity of the chosen actions and provide a positive premise for the practical use of this technology in solid fuel heating boilers.

Strony (od-do)

259-1 - 259-16

DOI

10.3390/en17010259

URL

https://www.mdpi.com/1996-1073/17/1/259

Uwagi

Article number: 259

Typ licencji

CC BY (uznanie autorstwa)

Tryb otwartego dostępu

otwarte czasopismo