The nitrogen content in the air is the most, and nitrogen is mainly used for ammonia synthesis, and is also an important raw material for synthetic fibers, synthetic resins, and synthetic rubber. Nitrogen can be used as a preservative, refrigerant, and can also be used to make fertilizers.Followed b

1. The gas in the oxygen cylinder cannot be completely used up, and the residual pressure of not less than 0.05MP should be retained.2. The distance between the oxygen cylinder and the open flame should be no less than 10 meters, should not be close to the heat source, and should not be exposed to s

Helium has the following characteristics:1. The content of radon in the air is extremely small, accounting for only about one in 200,000, which is easy to find;2. The ruthenium molecule is small, light in weight, easy to diffuse, and easy to pass through the leak hole than other gases;3. The cesium

The main load of the gas cylinder is internal gas pressure, wind load and earthquake action. The wind vibration coefficient should be considered in wind loads. The wind load shape coefficient of the high pressure spherical tank can generally be 0.30 to 0.35. The horizontal seismic action of the wet