Liquefied natural gas density: 0.42 ~ 0.46g/cm3. The density of gaseous natural gas is about 1/625 of that of liquefied natural gas, about 0.000672 to 0.000736 g/cm3.
The main component of LNG is methane, which is recognized as the cleanest fossil energy on earth. Colorless, odorless, non-toxic and non-corrosive, its volume is about 1/625 of the same volume of gaseous natural gas, and the mass of liquefied natural gas is only about 45% of the same volume of water.
Natural gas is a multi-component mixed gaseous fossil fuel, the main component is alkane, of which methane accounts for the vast majority, and there are a small amount of ethane, propane and butane. It mainly exists in oil fields, gas fields, coal seams and shale formations.
The world's advanced environmental protection countries are promoting the use of LNG. In addition to being used as fuel for power plants, factories, and household users, the methane contained in it can be used as chemical raw materials such as fertilizers, methanol solvents, and synthetic acetic acid; Ethane and propane can be cracked into ethylene and propylene, which are important raw materials for plastic products.
Ultra-low temperature LNG can provide a large amount of cold energy in the process of transforming into normal temperature gas state under atmospheric pressure. This cold energy can be recovered and used in 6 low temperature applications: separation of air to produce liquid oxygen, liquid nitrogen, liquefaction Carbon dioxide, dry ice production, use of cold energy for power generation, production of frozen food or use in frozen warehouses, low-temperature crushing treatment of industrial wastes such as rubber, plastic, iron filings, seawater desalination.