What is Liquid Petroleum Gas? Is it the same kind of fuel?
LNG and CNG are forms of natural gas whereas, LPG is a by-product of the oil and gas industries. LPG only occurs along with oil deposits, and was for many years ‘flared’ off and thus wasted. Nowadays it tends to be reused to pressurise the oil deposits and thus maximise the oil extraction. At the same time, LPG is widely used as a feedstock for the petrochemical industry and has, like oil, become an internationally traded commodity. To sustain a major transport market sector, and achieve a long-term future, LPG would need to be synthesised from oil or gas. The energy use involved in the synthesis process and the emissions generated would remove many of the environmental benefits that the use of surplus LPG currently affords. In any case, LPG is not suited to vehicles above 3.5 tonnes gvw, as it does not provide the required performance. If natural gas is predominantly methane, LPG consists mainly of propane. This, like methane is an excellent fuel, but it tends only to be used only in
