What is the proportion of natural gas?
The proportion of natural gas is about 0.65, lighter than air, and has the characteristics of colorless, tasteless, non-toxic.Natural gas refers to natural gas all exist in nature, including all kinds of natural gas of atmosphere, hydrosphere, lithosphere and formation (including oil gas, gas, mud volcano gas and coalbed gas and bio gas generation etc.).
Cubic meters of natural gas combustion heat value of 8000 kcal to 8500 kcal. The calorific value per kilogram of liquefied petroleum gas is 11000 kcal. The specific gravity of liquefied petroleum gas is 0.55. Combustion heat value per cubic meter is 25200 kcal. Each bottle of liquefied petroleum gas weighs 14.5 kg, a total combustion calorific value of 159500 kcal, equivalent to the combustion heat value of 20 cubic meters of natural gas.
The main component of alkane gas, including methane, majority, and small amounts of ethane, propane and butane, in addition there are hydrogen sulfide, carbon dioxide and nitrogen and water vapor and a small amount of carbon monoxide and trace rare gases, such as helium and argon. Natural gas before sending to the end user, in order to help leak detection, but also with mercaptan, four thiophene, etc. to add odor to the gas.Natural gas is not soluble in water, the density is 0.7174kg/Nm3, the relative density (water) is 0.45 (liquefied) ignition temperature (c) is 650, explosion limit (V%) is 5-15. Under standard conditions, methane to butane exists in a gaseous state and pentane is a liquid. Methane is the shortest and lightest hydrocarbon molecule.The organic sulfide and hydrogen sulfide (H S) is a common impurity in most cases the use of natural gas must be removed in advance. Natural gas containing sulfur impurities is described in English as "sour (acid)".
The definition of "natural gas", which has been used for a long time, is a narrow definition from the point of view of energy. In petroleum geology, commonly referred to as oil and gas fields. It is composed mainly of hydrocarbons and contains non hydrocarbon gases.Natural gas is a kind of mixed gas, which is mainly composed of hydrocarbon in the underground rock reservoir, the proportion is about 0.65, lighter than air, and has the characteristics of colorless, tasteless, non-toxic.
