Cryogenic air separation units (ASU)
Our commercial air separation unit can accurately separate the main components in the atmosphere. It uses advanced cryogenic distillation technology to convert air into high-purity oxygen, nitrogen, etc. through compression, purification, cooling and distillation. The unit has high separation accuracy, with oxygen purity exceeding 99.9% and nitrogen purity exceeding 99.999%. The equipment operates stably and is easy to maintain. It is suitable for many industries such as chemical, medical, and steel, providing a reliable gas source guarantee for corporate production.
Oxygen purity:99.9% Nitrogen purity: 99.9999%
Technical features
Oxygen output
50Nm3/h~30,000Nm3/h
Nitrogen output
300Nm3/h~60,000Nm3/h
Argon gas output
5Nm3/h~3,000Nm3/h
Air Separation Units Application
Electronics Industry
Chemical Industry
New Energy
Steel Plant
What are the core components of an air separation unit?
Compressor: compresses air, increases air pressure, and provides power for subsequent separation processes.
Molecular sieve adsorber: absorbs moisture, carbon dioxide and other impurities in the air to prevent them from freezing and blocking pipes and equipment at low temperatures.
Heat exchanger: realizes heat exchange between air and other fluids, cools the air to a low temperature state, and creates conditions for air liquefaction and separation.
Distillation tower: utilizes the difference in boiling points of different gas components to separate air into different components such as oxygen and nitrogen through multiple partial evaporation and partial condensation.
Expander: performs work on the outside through gas expansion to reduce the gas temperature and provide cooling for the device.
Pump: used to transport cryogenic liquids such as liquid oxygen and liquid nitrogen.
Among the core components of the air separation unit, which one has the highest technical content?
Distillation tower: It is the key equipment for air separation. Its technical content is reflected in the complex internal structure design and precise control strategy. The type, size and arrangement of the tower plate or filler need to be precisely designed to achieve efficient gas-liquid mass transfer. At the same time, the reflux ratio, temperature and pressure and other parameters need to be precisely controlled to ensure high-purity separation of different components.
Compressor: It needs to have high pressure ratio, large flow, high efficiency and stable and reliable operation performance. In terms of design, advanced impeller design technology, bearing technology and sealing technology should be adopted to improve the efficiency and reliability of the compressor while reducing energy consumption and noise.
Expander: Its technical difficulty lies in achieving efficient energy conversion and precise refrigeration capacity control under low temperature and high speed conditions. Special materials and sealing technology are needed to adapt to low temperature environments. At the same time, the design of impellers and nozzles should be optimized to improve the efficiency and stability of the expander.
Molecular sieve adsorber: The key technology lies in the research and development of adsorbents and the design of adsorption beds. It is necessary to develop molecular sieve adsorbents with high adsorption capacity, fast adsorption kinetics and long service life. At the same time, a reasonable adsorption bed structure should be designed to ensure sufficient contact between air and adsorbent to achieve efficient impurity removal.
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