Power-to-gas and the consequences: impact of higher hydrogen concentrations in natural gas on industrial combustion processes

Leicher, Jörg; Nowakowski, Tim; Giese, Anne; Görner, Klaus

doi:10.1016/j.egypro.2017.07.157

Cited by 20 publications

(21 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In conclusion, it is possible to establish that an admixture of hydrogen and natural gas with a hydrogen concentration up to 10% by volume can generally be injected into the natural gas grid with no significant problems of safety and efficiency [648,649].…”

Section: Gas Quality and Interchangeabilitymentioning

confidence: 99%

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

et al. 2020

View full text Add to dashboard Cite

Innovative renewable routes are potentially able to sustain the transition to a decarbonized energy economy. Green synthetic fuels, including hydrogen and natural gas, are considered viable alternatives to fossil fuels. Indeed, they play a fundamental role in those sectors that are difficult to electrify (e.g., road mobility or high-heat industrial processes), are capable of mitigating problems related to flexibility and instantaneous balance of the electric grid, are suitable for large-size and long-term storage and can be transported through the gas network. This article is an overview of the overall supply chain, including production, transport, storage and end uses. Available fuel conversion technologies use renewable energy for the catalytic conversion of non-fossil feedstocks into hydrogen and syngas. We will show how relevant technologies involve thermochemical, electrochemical and photochemical processes. The syngas quality can be improved by catalytic CO and CO2 methanation reactions for the generation of synthetic natural gas. Finally, the produced gaseous fuels could follow several pathways for transport and lead to different final uses. Therefore, storage alternatives and gas interchangeability requirements for the safe injection of green fuels in the natural gas network and fuel cells are outlined. Nevertheless, the effects of gas quality on combustion emissions and safety are considered.

show abstract

Section: Gas Quality and Interchangeabilitymentioning

confidence: 99%

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Additionally, it is necessary to ensure the hydrogen concentration to be equivalent across the pipeline at different locations with gas metering. At final consumer locations, when the concentration of hydrogen at natural gas is high, system adjustment may be required as studied by [54]. A review by [55] shows hydrogen must be preserved at a certain fraction to maintain the performance of domestic appliances in the residential and commercial sectors.…”

Section: Technical Challenges For Injection Into the Natural Gas Networkmentioning

confidence: 99%

At What Cost Can Renewable Hydrogen Offset Fossil Fuel Use in Ireland’s Gas Network?

et al. 2020

View full text Add to dashboard Cite

The results of a techno-economic model of distributed wind-hydrogen systems (WHS) located at each existing wind farm on the island of Ireland are presented in this paper. Hydrogen is produced by water electrolysis from wind energy and backed up by grid electricity, compressed before temporarily stored, then transported to the nearest injection location on the natural gas network. The model employs a novel correlation-based approach to select an optimum electrolyser capacity that generates a minimum levelised cost of hydrogen production (LCOH) for each WHS. Three scenarios of electrolyser operation are studied: (1) curtailed wind, (2) available wind, and (3) full capacity operations. Additionally, two sets of input parameters are used: (1) current and (2) future techno-economic parameters. Additionally, two electricity prices are considered: (1) low and (2) high prices. A closest facility algorithm in a geographic information system (GIS) package identifies the shortest routes from each WHS to its nearest injection point. By using current parameters, results show that small wind farms are not suitable to run electrolysers under available wind operation. They must be run at full capacity to achieve sufficiently low LCOH. At full capacity, the future average LCOH is 6–8 €/kg with total hydrogen production capacity of 49 kilotonnes per year, or equivalent to nearly 3% of Irish natural gas consumption. This potential will increase significantly due to the projected expansion of installed wind capacity in Ireland from 5 GW in 2020 to 10 GW in 2030.

show abstract

“…Most studies indicate that the use of methane/hydrogen mixture in ICEs [21][22][23][24][25][26] can improve the efficiency and reduce the emission of pollutant however, in case of GTs [27][28][29] this practice involves large and expensive modifications of the burners and of the operation parameters to maintain high efficiency levels. In the last few years, the behaviour of domestic appliances fueled by hydrogen enriched natural gas (HENG) has also been investigated by an increasing number of authors [30][31][32] indicating the necessity to rethink the regulations about risk assessment [33]. The use of these mixtures does not seem to have a negative impact on the industrial sectors which exploit the combustion of natural gas natural gas, such as glass or iron furnaces [34].…”

Section: Introductionmentioning

confidence: 99%

The potential of the natural gas grid to accommodate hydrogen as an energy vector in transition towards a fully renewable energy system

et al. 2022

View full text Add to dashboard Cite

Power-to-gas and the consequences: impact of higher hydrogen concentrations in natural gas on industrial combustion processes

Cited by 20 publications

References 2 publications

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

At What Cost Can Renewable Hydrogen Offset Fossil Fuel Use in Ireland’s Gas Network?

The potential of the natural gas grid to accommodate hydrogen as an energy vector in transition towards a fully renewable energy system

Contact Info

Product

Resources

About