Gases technical (cryogen)
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- Country of manufactureKazakhstan
Name |
GOST, TU |
Measurement unit. |
The price for measurement unit (small wholesale.) rub. |
The price for measurement unit (wholesale) rub. |
---|---|---|---|---|
Liquid nitrogen of special purity grade 1 | GOST 9293-74 (99,999%) | kg | 8,97 | contractual |
Argon the top liquid grade | GOST 10157-79 (99,993%) | kg | 23,60 | contractual |
Oxygen liquid technical grade 1 | GOST 6331-78 (99,7%) | kg | 8,50 | contractual |
Carbonic acid liquid the top grade | GOST 8050-85 (99,8%) | kg | 12,00 | contractual |
The technology of air separation with use of cryogenic temperatures on different gas components is known already for a long time. The basic principle of functioning of modern cryogenic installations consists in liquefaction of air and its subsequent division into argon, nitrogen and oxygen. This type of receiving liquid gases is called air separation by means of a method of deep cooling. In the beginning air compresses the special compressor, and then after passing of heat exchangers extends in the throttle flap or the machine-detandere. Thus, there is its cooling and transformation into liquid. The subsequent division of the liquid air consisting mainly of liquid oxygen and liquid nitrogen is based on different indicators of their boiling temperature. At evaporation of a liquid air nitrogen is evaporated, and other liquid is enriched with oxygen. As a result receive liquid nitrogen, oxygen, nitrogen and argon of necessary purity.