Natural gas substitutes ( SNG ), or synthetic natural gas , are fossil fuels that can be produced from fossil fuels such as lignite, , or from biofuels (when it's named bio-SNG) or from renewable electrical energy.
The Great Plains Synfuels Plant injects about 4.1 million m 3 /day SNG from lignite coal into the national gas network of the United States. The SNG production process at the Great Plains plant involves gasification, gas cleaning, shifting, and metanation. China is building nearly 30 large-scale SNG factory production noses from coal/lignite with an aggregate annual capacity of 120 billion cubic meters of SNG standards. SNG in the form of LNG or CNG can be used in road, rail, air and sea transport vehicles as expensive substitutes for diesel fuel, gasoline, etc. The carbon footprint of SNG derived from coal is proportional to petroleum products. Bio-SNG has a much smaller carbon footprint when compared to petroleum products. LPG can also be produced by synthesizing SNG with partial hydrogenation at high pressure and low temperature. LPG is easier to transport than SNG, better suited to fuel in a two-wheeled vehicle or smaller HP vehicle/machine and also pick up higher prices in the international market due to short supply.
Renewable electrical energy can also be used to create SNG (methane) through for example electrolysis of water or through PEM fuel cells in reverse to create hydrogen which is then reacted with CO 2 from eg CSS/U Utilization in Sabatier reaction.
- CO 2 4H 2 -> CH 4 2H 2 O
Video Substitute natural gas
Distribution
It is advantageous to distribute SNG and bio-SNG along with natural gas in a gas grid. In this way, renewable gas production can be phased at the same rate as increased production capacity. The gas market and natural gas infrastructure have contributed with is the condition for the introduction of large-scale renewable biomethane produced through anaerobic digestion (biogas) or gasification and bio-SNG methanasi.
Maps Substitute natural gas
See also
- Landfill gas
- Renewable natural gas
- Gas shale oil
- Power over gas
References
External links
- SGC Rapport 187 Natural gas substitute of biomass gasification
- SGC-relationship to gasification and methanasi
Source of the article : Wikipedia
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