Sky and gas refers to a mixture of hydrocarbons and non -hydrocarbon gases that are naturally hidden in the strata. The main component is methane, colorless, odorless, non -toxic and non -corrosive.A small amount of nitrogen, oxygen, carbon dioxide and sulfides with a small amount of hydrocarbon.What categories can sky gas be divided?
What is sky gas
From the definition of a broad sense, natural gas refers to all gas in nature in nature, including gas rings, water rings, biospheres, and rock rings.The definition of "natural gas" for a long time is a narrow definition from the perspective of energy. It refers to a mixture of hydrocarbons and non -hydrocarbon gases that are naturally hidden in the strata., Mud volcanic gas and creatures generate gas.Natural gas can be divided into two types: accompanying gas and non -accompanying anger.With the symbiosis of crude oil, the gas field gas used at the same time is called to be angry with the gas field. The non -accompanying anger includes two types of natural gas and the natural gas of the gas field.After the natural gas flows out of the well out of the well from the strata, as the pressure and temperature decrease, it is separated as the two phases of the gas liquid. The gas phase is the natural gas of the gas field.
Compared with energy such as coal and oil, there are very few substances that can affect human respiratory health during the combustion process. The carbon dioxide produces only about 40%of coal, and there are very few sulfur dioxide.Natural gas has no waste residue and wastewater after burning. It has the advantages of safety, high thermal value, and cleaning.However, for the greenhouse effect, natural gas will produce CO2 as coal and oil.Therefore, natural gas cannot be regarded as new energy.
Heaven and gas characteristics
Gas is colorless, tasteless, non -toxic and non -corrosive. The main components are mainly methane, with 90%of the content. The burning nitrogen oxides, hydrocarbons and carbon dioxide are far lower than the emission standards stipulated by the state.The heat conversion efficiency of natural gas is 65%, which is equivalent to oil liquefied gas, which is higher than coal; converted by equal thermal values, the price of natural gas is lower than coal and far below oil.
Sky gas classification
1. Press mining ore
1) The gas field gas or pure natural gas adopted by the gas well;
2) Petroleum and gas mined with oil, also known as petroleum accompaniment;
3) Against the gas fields containing petroleum light distillation points;
4) The gase of coal mines from the coal seam of the underground.
2. Press the processing method
1) Tacuity of natural gas
When the natural gas was pressed at the atmosphere and cooled to about -162 degrees Celsius, the natural gas gas changed into a liquid state, called liquefied natural gas.
LPG natural gas is colorless, odorless, non -toxic and non -corrosive. Its volume is about 1/600 of the same amount of gaseous natural gas volume. The weight of liquefied natural gas is only about 45%of the same volume water.
2) Compressed natural gas
Compression of natural gas is the pressure of natural gas and stored in a container with gaseous gesture.It is the same as the ingredients of natural gas.Can be used as vehicle fuel use.
Compressed gas can release cold energy when vaporization, which can be re -saved with energy saving, and it is convenient for transportation to transport cars and pipelines.

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