Nitrogen is a colorless, odorless, non-toxic, non-combustible, high-pressure gas stored in a cylinder. When its content increases and the oxygen content is below 19.5%, it may cause suffocation. Need to be equipped with self-priming breathing mask. The bottled nitrogen product is a high-pressure filling gas, and should be used after decompression and decompression. The packaged gas cylinders have a service life limit, and all expired gas cylinders must be sent to a department for safety inspection before they can be used. When exhaust gas is used in each bottle of nitrogen, the residual pressure in the bottle should be kept at 0.5MPa, and the residual pressure should not be less than 0.25MPa. The bottle valve should be closed to ensure gas quality and safety in use.
Nitrogen recovery is the recycling and reuse of waste gas in production. The use of nitrogen recovery compressors is a powerful measure to reduce production costs, save energy, and improve economic benefits.
Working principle: the impurity nitrogen that needs to be recovered, after being boosted by the compressor, the oil and water in it are removed through the filter, and then enter the dryer to further remove water, carbon dioxide and oil, and then enter the purification device to remove gases other than nitrogen The components are separated by pressure swing adsorption and membrane separation technology to remove impurities in the nitrogen to obtain high-purity nitrogen, so that the nitrogen purity is increased to more than 99%, and the nitrogen recovery rate is more than 95%. In this way, the waste nitrogen can be reused. Great economic value. Nitrogen is often referred to as an inert gas. It is used in some inert atmospheres for metal processing and in bulbs to prevent arcing, but it is not chemically inert. It is an essential element in the life of plants and animals, and is a component of many useful compounds. Nitrogen combines with many metals to form hard nitrides, which can be used as wear-resistant metals. A small amount of nitrogen in steel will inhibit grain growth at high temperatures and will also increase the strength of certain steels. It can also be used to produce hard surfaces on steel. Nitrogen can be used to make ammonia, nitric acid, nitrate, cyanide, etc.; in the manufacture of explosives; filling high-temperature thermometers, incandescent bulbs; forming inert materials to preserve materials, used in drying boxes or glove bags. Liquid nitrogen during food freezing; used as a coolant in the laboratory.
