Cryogen Air Separation Units

AGS Engineering designs and manufactures cryogenic air separation plants operating on a low pressure cycle.
The resulting products in liquid and gaseous state:
  • Nitrogen
  • Oxygen
  • Argon
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The technology of operation of cryogenic air separation units is based on the principle of low-temperature rectification, that is, the separation of air in the vapor-liquid phase into the main components: nitrogen, oxygen and argon. Today, cryogenic units allow to obtain separation products with the following parameters:
Nitrogen
Concentration: up to 99,99995%
Performance: up to 200 000 nm3/hour
Oxygen
Concentration: up to 99,9%
Performance: up to 65 000 nm3/hour
Argon
Concentration: up to 99,9999%
Performance: up to 4000 nm3/hour
Different types of stations make it possible to obtain gaseous and liquid separation products with different specific energy inputs. Therefore, to obtain products in a liquefied and gaseous state, the technology of cryogenic ASU differs and is divided into the main types:
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Cryogenic unit for producing gaseous air separation products
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Cryogenic unit for reduced air separation products
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Rare gas cryogenic unit
Depending on the technical task and the required technical gases, the type of cryogenic air separation unit is selected to obtain the greatest economic effect.
The technological line of cryogenic ASU consists of the main technological equipment:
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4a
4b
4c
1. The compressor provides an increase in the pressure of the source air, as well as cleaning from dust, solids and droplet moisture, using the built-in air filter and separator
2. The air pre-cooling system based on the steam compression chiller provides air cooling to a temperature of +3 ... +7 °C due to heat exchange with a refrigerant circulating in the system
3. The complex purification unit is designed for adsorption purification of air from carbon dioxide, water vapor and hydrocarbons. Adsorbent regeneration is carried out by a stream of heated waste mixture
4. The low-temperature unit provides the necessary conditions for the flow of the main technological processes of air separation and protects the equipment from environmental influences
4a. Air cooling practically up to liquefaction temperature due to heat exchange with waste mixture and product nitrogen
4b. The expander unit allows you to get the required cold reserve for low-temperature distillation by expanding the bottom product from the distillation column
4c. The distillation column is designed for the proper organization of heat and mass transfer during the implementation of low-temperature air distillation to obtain high-purity separation products

Air is compressed in the compressor and fed to the pre-cooling unit, where droplet moisture is separated. Further, compressed air enters the complex cleaning system (BCO) for deep drying and removal of carbon dioxide. Dried, purified and pre-cooled air is supplied to the separation unit, where the main process of rectification and production of products takes place.

The principle of operation of cryogenic ASU
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Air compression
Air compression in a multi-stage turbocharger with an intermediate and end cooler. Removing dust particles with an air filter at the inlet to the compressor.
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Air preparation
Comprehensive air purification from carbon dioxide, water vapor and hydrocarbons. Heated waste mixture for regeneration of the complex cleaning unit.
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Heat exchange
Air cooling to almost the liquefaction temperature due to heat exchange with the waste mixture and product nitrogen.
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Getting cold
Production of cold by expanding part of the bottoms product from a distillation column in a turboexpander Use of product nitrogen to utilize the work obtained in turbo-expander.
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Rectification
Separation of liquefied air with the production of nitrogen and oxygen of high purity in the process of heat and mass transfer in a double rectification column.
We provide
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2 year nitrogen generator warranty
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24-hour service support
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24/7 technical support
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Training and consultation of customer personnel
Interaction process
step 1
  • Customer request
  • Terms of Reference for the creation of a pneumatic system
step 2
  • Analysis of the technical specifications
  • Engineer visit on site
  • Pneumatic audit
  • Engineering Analysis
  • Exchange of information with the customer, clarification of information
step 3
  • Design
  • Equipment selection
  • Systems engineering
  • Modernization
  • Set of design documentation
  • Passing examination
  • Engineering report and rationale
  • Equipment supply
  • Construction and installation work
  • Commissioning works
step 4
  • Customer acceptance
step 5
  • Remote control and monitoring
  • Maintenance
  • Engineering support
  • Warranty
Implemented projects
Supply Geography
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Предприятие ОПК
Москва
Equipment supplied:
Адсорбционные осушители воздуха GA-200-H
Concentration: %
Productivity: 240 m3/h
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Редкинский опытный завод
Тверь
Equipment supplied:
Генераторы азота АВС-250А
Concentration: 99,99%
Productivity: 240 m3/h
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Новые технологии
Санкт-Петербург
Equipment supplied:
Азотная станция АВС-2А
Concentration: 95%
Productivity: 5,5 m3/h
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УПЗ
Ташкент
Equipment supplied:
Кислородная станция АВС-32БМ
Concentration: 92+-3%
Productivity: 30 m3/h
1 1
АВС 140А-БМ Псков
Псков
Equipment supplied:
АВС 140А-БМ
Concentration: 99,5%
Productivity: 140 н m3/h
1 1
PG "PHOSPHORIT"
Kingisepp
Equipment supplied:
Nitrogen station GB-1500
Concentration: 97%
Productivity: 1500 m3/h
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TESTPRYBOR
Kazan
Equipment supplied:
Nitrogen AGS station
Concentration: 99.9995%
Productivity: 16 м3/ч m3/h
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IE Skiller
Omsk
Equipment supplied:
АВС-24К
Concentration: 95%
Productivity: 24 m3/h
1 1
LLC "Evakem"
Kazan
Equipment supplied:
МАВС-5А
Concentration: 99,95%
Productivity: 6 m3/h
1 1
PJSC LUKOIL
Astrakhan
Equipment supplied:
МВС-5А
Concentration: 99%
Productivity: 5 m3/h
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PAO Svetlana
St. Petersburg
Equipment supplied:
АВС-1600А
Concentration: 99,9995%
Productivity: 320 m3/h
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Techmontazh
Omsk
Equipment supplied:
КВС-700А
Concentration: 99,9995%
Productivity: 700 m3/h
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ООО «ТК «Майский»
Респ. Татарстан, с. Осиново
Equipment supplied:
Адсорбционный генератор азота АВС-15А
Concentration: 99%
Productivity: 16 m3/h
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Челябинская областная станция переливания крови
Челябинск
Equipment supplied:
GA-16
Concentration: -%
Productivity: - m3/h
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