Impact of raw liquid natural gas composition on combustion properties and emission characteristic

• Autorzy: Czyżewski Paweł , Ślefarski Rafał , Jójka Joanna

Identyfikatory

DOI

10.24425/ather.2023.145874

• Języki publikacji: EN

Abstrakty

EN

The article presents the results of numerical and analytical investigations of the influence of raw liquid natural gas (LNG) composition on parameters characterizing the combustion process. The high content of higher hydrocarbons influences the thermodynamic combustion process described with parameters like the adiabatic flame temperature, laminar flame speed and ignition delay time. A numerical study of the impact of LNG fuels on emission characteristics using the Cantera code has been performed. Results have shown that the change of grid natural gas to some types of liquid natural gas can result in an incomplete combustion process and an increase of emission of toxic compounds such as carbon monoxide and unburned hydrocarbons. For all investigated fuels the laminar flame speed rises by about 10% compared to natural gas, while the adiabatic flame temperature is nearly the same. The ignition delay time is decreased with an increase of ethane share in the fuel. The analysis of chemical pathways has shown that hydrogen cyanide and hydrogen formation is present, particularly in the high temperature combustion regimes, which results in an increase of nitric oxide molar fraction in flue gases by even 10% compared to natural gas. To summarize, for some applications, liquid natural gases cannot be directly used as interchangeable fuels in an industry sector, even if they meet the legal requirements.

Słowa kluczowe

EN

toxic compounds; fuel flexibility; liquid natural gas; NO emission

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2023
• Tom: Vol. 44, no 1
• Strony: 3--21
• Opis fizyczny: Bibliogr. 45 poz., rys., tab.

Twórcy

autor

Czyżewski Paweł

• Poznan University of Technology, Institute of Thermal Energy, Piotrowo 3a, 60-965, Poznan, Poland

autor

Ślefarski Rafał

• Poznan University of Technology, Institute of Thermal Energy, Piotrowo 3a, 60-965, Poznan, Poland

autor

Jójka Joanna

• Poznan University of Technology, Institute of Thermal Energy, Piotrowo 3a, 60-965, Poznan, Poland

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).