Gas is the general term for gas fuel. It can burn and release heat for urban residents and industrial enterprises.There are many types of gas, including natural gas, artificial gas, liquefied petroleum and biogas, and coal -to -gas.So how to open gas?What are the main components of gas?Is gas toxic?The following is the Encyclopedia of Gas Knowledge of Buying.com, providing you with the most detailed collection of gas knowledge.
Introduction to Gas
Gas is the general term for gas fuel. It can burn and release heat for urban residents and industrial enterprises.There are many types of gas, including natural gas, artificial gas, liquefied petroleum and biogas, and coal -to -gas.
As a "smoke -free industry" and a strategic industry, which is "low -consumption, high -yield, low pollution, and high -efficiency", it is of great strategic significance for the national economy and sustainable development.
According to the source of gas, gas can usually be divided into natural gas, artificial gas, liquefied petroleum gas and biological gas.
Compared with developed countries, my countrys gas supply industry starts late. The distribution of gas mainly includes three types: gas, liquefied petroleum gas and natural gas.my countrys gas supply has increased significantly since the 1990s.Among them, after the significant growth of artificial gas supply after 1990, due to its large pollution and strong toxicity, it is currently in a relatively slow growth stage; liquefied petroleum gas is affected by the rise in oil prices, and the supply has remained stable; generated to produce;Compared with gasoline and diesel with the same thermal value, it is 30%-50%cheaper, which has obvious economy. At the same time, the country attaches increasing importance to environmental protection. The markets demand for clean energy has continued to grow.Natural gas consumption has developed rapidly.
Type of gas
1. Natural gas
Natural gas is mainly a mixture composed of hydrocarbons with low molecules.According to the source of natural gas, it can be divided into five types: gas field gas (or pure natural gas), petroleum accompanied by air, condense gas field gas, coalbed methane and shale gas.
2. Artificial gas
Artificial gas refers to the combustible gas of solid, liquid (including coal, heavy oil, light oil, etc.) as the raw material and complies with the current national standard "Artificial Gas" GB/T13612 quality requirements.Depending on the gas -making raw materials and processing methods, multiple types of artificial gas can be produced.
3, liquefied gas
LPG gas is a part of hydrocarbons obtained as a by -product in the process of mining and refining petroleum.Domestic liquefied petroleum gas mainly comes from catalytic cracking devices of refining plants.The output of liquefied petroleum gas usually accounts for about 7%to 8%of the treatment of catalytic cracking devices.
4. Biomass Qi
Biomass gas is a combustible gas produced by biomass as raw materials through fermentation, dry distillation or direct gasification.Various organic substances, such as protein, cellulose, fat, starch, etc., fermented under the conditions of isolation of air, and can produce flammable gas under the action of microorganisms, also known as biogas.
5. Other gas
Increasing natural gas: It means that natural gas has been mixed with the gains, producing a new type of gas, which can reduce cutting costs, improve cutting quality, and reduce carbon emissions.After the natural gas is mixed with the gain agent, the burning temperature in the oxygen can be 400-600 ° C higher than the natural gas, which can completely replace high-energy and high polluting acetylene.
Natural gas use
1. Power generation
The waste emissions of the gas turbine power plant with natural gas fuel is much lower than that of coal -fired and fuel power plants, and the power generation efficiency is high, the construction cost is low, and the construction speed is fast;Earth -province.
2. Chemical raw materials
Natural gas is the best raw material for nitrogen fertilizer. Chemical production devices with natural gas as raw materials are invested in provincial, low energy consumption, small land, less personnel, good environmental protection, and low operating costs.Natural gas accounts for the proportion of nitrogen fertilizer production raw materials, with an average of about 80%in the world.
3. Civilian and commercial use
Natural gas is widely used in civilian and commercial gas stoves, water heater, heating and refrigeration, and can also be used in industries such as paper, metallurgy, quarry, ceramics, and glass. It can also be used for waste incineration and dry and dehydration treatment.Especially residents living fuel.With the improvement of peoples living standards and the enhancement of environmental protection awareness, most cities demand for natural gas has increased significantly.The economic benefits of natural gas as civil fuel are also greater than industrial fuel.
4. Car fuel
Based on natural gas instead of automotive oil, it has the advantages of low price, less pollution, and safety.The exhaust emissions of natural gas vehicles are greatly lower than that of gasoline and diesel engine cars. It does not accumulate carbon, does not wear, and has low operating costs. It is an environmentally friendly car.

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