- Tytuł:
- The impact of hydrogen addition on the methane number of natural gas
- Autorzy:
-
Holewa-Rataj, Jadwiga
Kukulska-Zając, Ewa - Powiązania:
- https://bibliotekanauki.pl/articles/1834041.pdf
- Data publikacji:
- 2020
- Wydawca:
- Instytut Nafty i Gazu - Państwowy Instytut Badawczy
- Tematy:
-
liczba metanowa
gaz ziemny
wodór
methane number
natural gas
hydrogen - Opis:
- The methane number is an important parameter characterizing motor fuels. The value of the methane number determines the fuel susceptibility to knocking combustion, and the higher its value, the greater the fuel resistance to knocking combustion. Natural gas belonging to the H group should have a minimum methane number above 65 (PN-EN 16726:2018). The dominant view in the literature is that the optimal value of the methane number for gases burned in CNG or LNG fueled car engines should be above 80 due to the efficiency of the engine operation and low emission of harmful substances. In the era of striving to reduce the consumption of fossil fuels and replace them with renewable energy sources (RES), it is important to check how significantly will the hydrogen addition impact the methane number value of natural gas. It is essential because hydrogen has been in the spotlight for several years now as an excellent energy carrier and the so-called clean fuel, and for zero methane number was assumed. The article discusses the effect of hydrogen addition to natural gas on the value of the methane number of the resulting mixture in relation to the minimum and optimal value of the methane number. Data on 19 different compositions of natural gas were used to perform the analysis. They characterized natural gas belonging to group E from the Polish distribution network. The results of the calculations carried out allow us to state that the addition of hydrogen to natural gas, in an amount allowing to maintain the physicochemical parameters of the gas specified in the relevant standards, causes a decrease in the value of the methane number of the resulting natural gas-hydrogen mixture by a maximum of 22.1%. However, in none of the analyzed cases the obtained methane number was lower than the minimum value of 65. With regard to the optimal methane number value for gaseous fuels, it can be concluded that the addition of hydrogen to natural gas (while maintaining the adopted assumptions regarding energy parameters and gas density) can increase the knocking properties of the resulting mixture and make it not an optimal fuel. The performed calculations and analyzes also showed that the change in the methane number value of the natural gas-hydrogen mixture is proportional to the amount of hydrogen introduced into natural gas.
- Źródło:
-
Nafta-Gaz; 2020, 76, 12; 945--950
0867-8871 - Pojawia się w:
- Nafta-Gaz
- Dostawca treści:
- Biblioteka Nauki
Artykuł