{"id":6649,"date":"2021-09-30T13:04:50","date_gmt":"2021-09-30T10:04:50","guid":{"rendered":"https:\/\/rusgazcryo.ru\/cryogenic-air-separation-units\/"},"modified":"2025-11-26T08:39:35","modified_gmt":"2025-11-26T05:39:35","slug":"kriogennye-ustanovki-razdeleniya-vozduha","status":"publish","type":"post","link":"https:\/\/rusgazcryo.ru\/en\/kriogennye-ustanovki-razdeleniya-vozduha\/","title":{"rendered":"Cryogenic Air Separation Units"},"content":{"rendered":"\n
Atmospheric air contains approximately 78% nitrogen, 21% oxygen, and the remaining share is made up of carbon dioxide, noble gases, methane, nitrous oxide and ozone. In air separation units, products of low-temperature rectification are obtained from air. <\/p>\n\n\n\n
Classification of<\/strong> air separation units<\/strong><\/h3>\n\n\n\n
\n
By cycle pressure, kgf\/cm\u00b2<\/sup>:\n
\n
High (150\u2013200) <\/li>\n\n\n\n
Medium (40\u201370) <\/li>\n\n\n\n
Low (5\u201312)<\/li>\n<\/ul>\n<\/li>\n\n\n\n
By the method of fraction separation:\n
\n
Adsorption <\/li>\n\n\n\n
Membrane <\/li>\n\n\n\n
Cryogenic<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
GOST R 54892-2012 applies to air separation units and to all types of cryogenic systems installed at various production sites and air separation stations. This regulatory document serves as the basis for the construction, modernization and repair of cryogenic facilities and equipment. <\/p>\n\n\n\n\n<\/figure>\n\n\n\n<\/figure>\nImplemented project: Nitrogen production station, Surgutneftegaz PJSC, Surgut. <\/figcaption><\/figure>\n\n\n\n
Classification<\/h2>\n\n\n\n
Cryogenic air separation units can be classified:<\/p>\n\n\n\n
\n
By capacity of the main product:\n
\n
For oxygen <\/li>\n\n\n\n
For nitrogen<\/li>\n\n\n\n
For argon<\/li>\n\n\n\n
For rare gases<\/li>\n<\/ul>\n<\/li>\n\n\n\n
By type of end product:\n
\n
Oxygen units<\/li>\n\n\n\n
Nitrogen units<\/li>\n\n\n\n
Nitrogen-oxygen units<\/li>\n\n\n\n
For argon production<\/li>\n\n\n\n
For rare gas production<\/li>\n<\/ul>\n<\/li>\n\n\n\n
By process scheme:\n
\n
By refrigeration cycle<\/li>\n\n\n\n
By purification and drying method<\/li>\n\n\n\n
By rectification arrangements<\/li>\n<\/ul>\n<\/li>\n\n\n\n
By mobility:\n
\n
Mobile<\/li>\n\n\n\n
Stationary<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
Principle of operation<\/strong><\/h2>\n\n\n\n
The operation of an air separation unit consists of the following stages:<\/p>\n\n\n\n
\n
A compressor unit compresses the air to the specified working pressure;<\/li>\n\n\n\n
An integrated purification and drying unit removes moisture, carbon dioxide and hydrocarbons from the air using adsorbents (synthetic NaX zeolite);<\/li>\n\n\n\n
A turboexpander unit and heat-exchange system prepare the bottom liquid to be fed to the rectification column;<\/li>\n\n\n\n
The rectification column separates pure nitrogen from the bottom liquid;<\/li>\n\n\n\n
When the cryogenic equipment is used for oxygen production, the bottom liquid is directed to the lower column, where liquid oxygen is recovered and then withdrawn from the system through a condenser\u2013evaporator.<\/li>\n<\/ul>\n\n\n\n\n<\/figure>\n\n\n\n<\/figure>\nAir separation block and turboexpander\u2013compressor<\/figcaption><\/figure>\n\n\n\n
Purchase of cryogenic oxygen units<\/strong><\/h2>\n\n\n\n
RusGazKrio supplies all types of air separation units in Moscow, across Russia and the CIS. The continuous process cycle is at least one year, with capacities up to 110,000 Nm\u00b3\/h. <\/p>\n\n\n\n
The standard scope of supply includes:<\/h3>\n\n\n\n
\n
Compressor and turboexpander units;<\/li>\n\n\n\n
Integrated air purification and drying unit;<\/li>\n\n\n\n
Cooling system;<\/li>\n\n\n\n
Separation block;<\/li>\n\n\n\n
Control, power supply and gasification systems;<\/li>\n\n\n\n
Storage tanks;<\/li>\n\n\n\n
Documentation.<\/li>\n<\/ul>\n\n\n\n
Air separation units based on low-temperature rectification are supplied with an air turbo compressor. The exact scope of supply depends on the customer\u2019s request and is reflected in the final price of the air separation unit. <\/p>\n\n\n\n
Key features of the supplied units<\/h3>\n\n\n\n
\n
The air pre-purification unit performs adsorption using layers of alumina and zeolite;<\/li>\n\n\n\n
Use of high-efficiency plate-fin heat exchangers;<\/li>\n\n\n\n
Use of a turboexpander\u2013compressor makes it possible to reduce operating costs: cooling is achieved by air expansion in the turboexpander, while cycle pressure is increased by compression in the compressor;<\/li>\n\n\n\n
Equipped with a monitoring and control system based on personal computers operating in interactive (dialog) mode.<\/li>\n<\/ul>\n\n\n\n\n<\/figure>\n\n\n\n<\/figure>\nGasification and Storage System: Cryogenic Tanks, Evaporators <\/figcaption><\/figure>\n\n\n\n
About the Company<\/h2>\n\n\n\n
RusGazKrio LLC offers supply and installation of air separation units (cryogenic and adsorption types) at manufacturer prices. Each unit is designed to meet the specific tasks and requirements of the customer. Our scope of services includes: <\/p>\n\n\n\n
\n
Design;<\/li>\n\n\n\n
Manufacturing;<\/li>\n\n\n\n
Supply of air separation equipment;<\/li>\n\n\n\n
Supervision of installation and commissioning;<\/li>\n\n\n\n
Maintenance during operation;<\/li>\n\n\n\n
Personnel training.<\/li>\n<\/ul>\n\n\n\n
Our specialists adapt air separation units to the conditions of a specific production facility. To ensure uninterrupted commissioning, our qualified engineers carry out preparatory work for two to three months. <\/p>\n\n\n\n\n<\/figure>\n\n\n\n<\/figure>\nAutomated control system for ASUs<\/figcaption><\/figure>\n\n\n\n
Technical characteristics of oxygen air separation units <\/strong><\/h3>\n\n\n\n
The separation systems we offer are characterized by high efficiency, reliability, a high degree of automation, and long-term, straightforward operation.<\/p>\n\n\n\n
![\"Implemented](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/stancziya-razdeleniya-vozduha_hranenie.jpg\")
<\/figure>\n\n\n\n![\"Implemented](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/stancziya-polucheniya-azota.jpg\")
<\/figure>\n![\"Air](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/stancziya-razdeleniya-vozduha-1.jpg\")
<\/figure>\n\n\n\n![\"Air](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/turbodetander-kompressor-1.jpg\")
<\/figure>\n![\"Gasification](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/stancziya-polucheniya-azota_hranenie-1024x733.jpg\")
<\/figure>\n\n\n\n![\"Gasification](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/kriogennye-rezervuary-atmosfernye-ispariteli.jpg\")
<\/figure>\n![\"Automated](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/sistema-upravleniya-1024x663.jpg\")
<\/figure>\n\n\n\n![\"Automated](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/pul-upravleniya-vru.jpg\")
<\/figure>\n![\"Manufacturer:](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/12\/image5.png\")
![\"Manufacturer:](\"https:\/\/rusgazcryo.ru\/wp-content\/uploads\/2021\/10\/sertifikat-dilera-hangzhou-oxygen-plant-group_page-0001-1.jpg\")