Will the cold ignition point of natural gas be lowered? Will it be difficult to light?

The ignition temperature of natural gas is 270-540℃. (The ignition temperature of mixed gas will decrease) It is mainly composed of methane (85%) and a small amount of ethane (9%), propane (3%), nitrogen (2%) and butane (1%). Mainly used as fuel, but also used as raw materials for the manufacture of acetaldehyde, acetylene, ammonia, carbon black, ethanol, formaldehyde, hydrocarbon fuel, hydrogenated oil, methanol, nitric acid, synthetic gas, vinyl chloride and other chemicals.

Natural gas is compressed into liquid for storage and transportation. Coal miners, nitric acid producers, power plant workers, organic chemical synthesizers, gas users, refiners, etc. Have access to this product.

It mainly enters the human body through the respiratory tract. This is a simple suffocating gas. When the concentration is high, air replacement leads to hypoxia, resulting in shortness of breath and loss of consciousness. In severe cases, people may suffocate and die due to hypoxemia. High pressure natural gas can cause frostbite. Incomplete combustion will produce carbon monoxide.

Extended data:

Liquefied natural gas (LNG) is a liquid after natural gas is compressed and cooled to the boiling point (-16 1.5℃). LNG is usually stored in a low-temperature storage tank of about-16 1.5℃ and 0. 1MPa. Its main component is methane, which is transported by special ships or tankers and gasified when used.

Since 1970s, the output and trade volume of world LNG have increased rapidly. In 2005, the international trade volume of LNG reached 18885438+0 billion cubic meters, among which Indonesia was the largest exporter, with an export volume of 3/kloc-0.40 billion cubic meters. The largest importer is Japan, with 76.32 billion cubic meters.

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