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Liquefied gas is the pressurization and cooling of a gas to turn it into a liquid. It is easy to store, transport and use. Like oxygen, when it is more than one hundred degrees below zero, it will turn into a light blue liquid, also known as liquefied gas. LPG is a colorless volatile liquid obtained by liquefying natural gas or petroleum under pressure in a refinery and cooling, and it is easy to spontaneously ignite. When its content in the air reaches a certain concentration range, it can explode in case of an open flame.
With the development of the petrochemical industry, LPG, as a basic chemical raw material and a new type of fuel, has attracted more and more attention. In chemical production, LPG is a by-product of the catalytic and thermal cracking of crude oil in refineries.
Colorless volatile liquid obtained by pressurizing and cooling of refinery gas or natural gas, flammable. When the content of liquefied petroleum gas in the air reaches a certain concentration range, it will explode in case of an open flame. The main components of LPG obtained from refinery gas are propane, propylene, butane, butene, and contain small amounts of pentane, pentene and trace sulfide impurities.
Among them, carbon oxysulfide is removed by alcohol amine absorption tower, and sulfide is removed by alkali washing method. Liquefied gas produced from natural gas (including oilfield associated gas) is essentially free of olefins. The primary product for the stable operation of gasoline in the refinery is liquefied petroleum gas, which can be used as motor fuel, household fuel, basic organic synthetic raw material, etc.
Using LPG as fuel has been widely used in people's lives due to its high calorific value, no smoke, no carbon residue, and easy operation and use. In addition, LPG is used for cutting metals, roasting agricultural products, and roasting in industrial kilns.
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