SNG in the form of LNG or CNG can be used in road, rail, air and marine transport vehicles as a substitute for costly diesel, petrol, etc.
LPG can also be produced by synthesising SNG with partial reverse hydrogenation at high pressure and low temperature.
LPG is more easily transportable than SNG, more suitable as fuel in two-wheeler or smaller HP vehicles/engines, and also fetches higher price in international market due to short supply.
The Great Plains Synfuels Plant injects approximately 4.1 million m3/day of SNG from lignite coal into the United States national gas grid.
[1] The production process of SNG at the Great Plains plant involves gasification, gas cleaning, shift, and methanation.