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Know the Different Natural Gas Types

Know the Different Natural Gas Types


Natural gas used as fuel or an industrial raw material that is piped directly from the gas field after being purified.

90% of LNG (liquefied natural gas) is composed of methane (CH4) and is methane gas that has been compressed and liquefied at atmospheric pressure and -163 degrees Celsius. The gas must first go through a purification procedure to get rid of undesired substances including CO2, H2S, Hg, H2O, and heavy hydrocarbons before it can be liquefied.

The gas volume will be 600 times less as a result of this technique. LNG can now be transported more easily and in bigger quantities due to this shrinking. Ships are used to deliver LNG to LNG terminals, where it is stored in tanks at atmospheric pressure. The LNG is then transformed back into gas and fed through the transmission network.

Liquefied petroleum gas (LPG) or liquefied natural gas is a fuel whose primary ingredients are butane (C4H10) and propane (C3H8). LPG is divided into three types: propane LPG, butane LPG, and mixed LPG, which is a combination of the two types of LPG. LPG can be produced by distilling crude oil or by condensation of natural gas in facilities that handle that gas.

Due to LPG's significantly smaller volume than that of gas, liquefaction of natural gas is meant to address the issue of transportation to customers. The LPG gas must be kept in a pressurized tank in order to remain liquid at room temperature. Cryogenic and absorption procedures are two examples of the various sorts of processes that can be used to transform natural gas into LPG products.

Natural gas that has been compressed under intense pressure to a volume that is around 1/250 of that of natural gas under normal conditions is known as CNG (compressed natural gas). Natural gas is compressed to increase the amount of gas that may be transported per unit volume of the vessel. At room temperature, CNG compression pressure can exceed 250 bar. Natural gas that will be delivered to consumers via compressed natural gas (CNG) must adhere to commercial gas criteria, which include upper limits for water, CO2, and heavy hydrocarbons. Additionally, rigorous restrictions on the amount of water and heavy hydrocarbons are needed when storing gas at very high pressures to avoid condensation and the development of hydrates.

The transportation of natural gas in the form of CNG requires shipping and receiving infrastructure, just like the transportation of natural gas in the form of LNG. Up until now, only trailers have been used to transport CNG. Three different types of infrastructure are needed in order to transport natural gas in the form of compressed natural gas (CNG): delivery facilities (mother station), transportation facilities, and receiving facilities (daughter stations).

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