What are Some Uses of Natural Gas?

Natural gas's statement is incorrect and should actually be written as natural gas. It refers to a mixture of hydrocarbon and non-hydrocarbon gases naturally contained in the formation. The main component is CH4 (methane), which is colorless, odorless, non-toxic and non-corrosive. It also includes a certain amount of ethane, propane and heavy Quality hydrocarbons, as well as small amounts of nitrogen, oxygen, carbon dioxide and sulfides. Ignition generates H2O (water).

Natural gas

In a broad definition, natural gas refers to all gases that occur naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, biosphere, and lithosphere. The definition of "natural gas" that has been commonly used 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 contained in the formation. It mainly exists in

The gas is colorless, odorless, non-toxic and non-corrosive. The main component is methane, with a content of 90%. The nitrogen oxides, hydrocarbons and carbon monoxide produced by combustion are far below the national emission standards, and there is no dust pollution. The thermal conversion efficiency of natural gas is 65%, which is equivalent to that of petroleum liquefied gas and higher than coal. In terms of isothermal value, the price of natural gas is already lower than coal and far lower than petroleum.

1.Coking gas . The main components of coking gas (volume fraction%):

H2: 50 ~ 60 O2: 0.4 ~ 0.6 CH4: 22 ~ 26 CmHn: 2.2 ~ 2.6 CO: 2 ~ 3 CO2: 2.2 N2: 2.24

2. Biogas-Biogas is a mixed gas whose main components are methane (CH4) and carbon dioxide (C02). Methane accounts for 60% to 70%, carbon dioxide accounts for 30% to 40%, and a small amount of hydrogen, carbon monoxide, hydrogen sulfide, oxygen, and nitrogen. Because it contains flammable gas methane, biogas can be used as fuel. Biogas is a product of bacteria decomposing organic matter under anaerobic conditions. Organic waste from the city, sludge from sewage treatment plants, human and animal waste from rural areas, and crop straws can be used as raw materials for biogas production. The process of bacterial decomposition of organic matter is roughly divided into two stages: the first stage converts complex high-molecular organic substances into low-molecular organic substances, such as acetic acid, propionic acid, butyric acid, etc .; the second stage, the first stage The product is converted into methane and carbon dioxide.

3.Gas-Methane mainly refers to methane (cH4), which is a colorless, odorless, odorless, flammable gas. The concentration of explosive conditions is 5 to 16%, and the oxygen is greater than 12%. When exposed to fire or a temperature of 650 to 750, it will cause an explosion. Concentration 9.5% has the greatest explosive power. When the concentration is greater than 16%, it will not explode when it burns. There are mainly coal bodies or rotten plants, and they are in the state of existence, suction and free. Under the coal mine is the first natural enemy of coal workers, The geology is complicated, the environment, air, and the workplace are complicated. Due to a variety of reasons, there is a certain concentration of gas. When it encounters an open flame, it will explode. It is the main cause of mining disasters and a world problem.

4. Straw gas-The main components of the gas obtained from gasification of straw are: CO (20%), H2 (9%), CH4 (12%), CO2 (12%), O2 (1%), N2 (52 %). The low calorific value of gas is 5-6MJ / NM3.

Gasification rate: about 2nm3 per kg of dry raw materials, energy conversion rate exceeds 85%.

5. Garbage gas productionThe main component of landfill gas is biogas (methane). The greenhouse effect of this gas is 22 times that of carbon dioxide, and its ability to destroy the ozone layer is 40 times that of carbon dioxide. It is also flammable and explosive.