Cryogenic Air Separation Plants

Name: Cryogenic Air Separation Plants - China Cryogenic Air Separation Plants Suppliers Factory - NEWTEK INDUSTRY
Brand: NEWTEK
SKU: 274143176

Cryogenic air separation unit is a key equipment used in the industrial field to separate air components and produce high-purity oxygen, nitrogen, argon and other gases. Its core working principle is to use the different boiling points of various components in the air. Under standard atmospheric pressure, the boiling point of nitrogen is -195.8℃ and that of oxygen is -183℃. Through a series of complex processes, the air is first compressed, cooled, purified, and then cooled to an extremely low temperature to liquefy it. Then, in the distillation tower, according to the difference in boiling points, the gas components evaporate and condense in turn to achieve separation.

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Description

Technical Parameters

Core features of cryogenic air separation plants

●High-purity gas output: It can produce high-purity oxygen, nitrogen, argon and other gases, and the purity can meet the high standards of chemical, electronic and other industries with strict requirements on gas purity.

●Separation based on boiling point difference: Using the principle of different boiling points of each component in the air, the gas is liquefied through deep cooling to achieve separation. The separation principle is scientific and efficient.

●Large-scale separation capability: It has the ability to process air on a large scale and separate the required gas, which can stably provide a large amount of gas for industrial production and ensure production continuity.

●Complex process guarantee: Through a series of complex process links such as filtration, compression, cooling, purification, heat exchange, and distillation, the accuracy and stability of the gas separation process are ensured.

Core principles and process flow

Core separation principle

Separation is achieved by relying on the different boiling points of each component in the air. The boiling point of nitrogen under standard atmospheric pressure is -195.8℃, oxygen is -183℃, and argon is between the two. Through deep cooling, each component is liquefied and separated in turn.

Air filtration treatment

The air first passes through a multi-stage filter to remove particles with a diameter greater than 0.3μm, providing a clean air source for the stable operation of subsequent equipment.

Air compression link

A centrifugal compressor is used to pressurize the air to 5-8bar, so that the gas liquefaction temperature is raised to about -170℃, which is convenient for subsequent cooling and liquefaction treatment.

Air cooling and purification

The compressed high-temperature air is cooled by heat exchange with cooling water through the cooling system, and water vapor is removed at the same time; then the molecular sieve in the purifier adsorbs impurities such as carbon dioxide, and the adsorption container works alternately to achieve continuous purification.

Heat exchange process

The purified air enters the heat exchanger and exchanges heat with the low-temperature product and exhaust gas flow in countercurrent to about -185℃, which not only cools down but also recovers cold energy. Brazed aluminum heat exchangers are often used to improve efficiency.

Distillation tower separation

Oxygen is separated by connecting a "high-pressure tower" and a "low-pressure tower" in series. The former performs preliminary separation, while the latter purifies oxygen. Nitrogen is discharged from the top of the tower and oxygen is produced from the bottom of the tower. Extracting argon requires additional crude argon tower and pure argon tower processing.

Industry Applications

●Chemical industry: In chemical production, the high-purity oxygen provided by the cryogenic air separation unit is the key raw material for many oxidation reactions, which can improve reaction efficiency and product purity; nitrogen, as an inert protective gas, can effectively prevent oxidation of materials in chemical reactions, ensuring production safety and product quality.
●Steel metallurgy: During steel smelting, high-purity oxygen is blown through a blast furnace, which can accelerate the reduction of iron ore, increase furnace temperature and smelting efficiency, and improve steel production and quality; nitrogen is used to protect and purge molten steel to prevent oxidation of molten steel and ensure steel performance.
●Electronic manufacturing industry: In the production of precision devices such as electronic chips, the ultra-pure nitrogen and oxygen produced by the cryogenic air separation unit are indispensable. They can be used in wafer cleaning, packaging and other links to prevent impurity contamination and ensure the high precision and high reliability of electronic components.
●Medical field: High-purity oxygen is a necessary gas for medical scenarios such as hospital emergency and respiratory support. The cryogenic air separation unit can stably supply oxygen that meets medical standards, providing reliable protection for patient treatment and life support.

FAQ

1.What is the core principle of cryogenic air separation plants?
They separate air components based on differences in boiling points. Under standard atmospheric pressure, nitrogen boils at -195.8℃, oxygen at -183℃, and argon in between. By cooling air to extremely low temperatures, components are liquefied and separated sequentially.

2.Which industries rely heavily on cryogenic air separation plants?
Key industries include chemical engineering, iron and steel metallurgy, electronics manufacturing, and medical fields. They need high-purity oxygen, nitrogen, and argon for production and operations.

3.What are the main gases produced by these plants?
They primarily produce high-purity oxygen, nitrogen, and argon. These gases can meet the stringent purity requirements of various industrial and medical applications.

4.How do cryogenic air separation plants ensure gas purity?
Through a series of processes like filtration, compression, cooling, purification (using molecular sieves), heat exchange, and distillation in towers, impurities are removed step by step to achieve high purity.

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Choosing to cooperate with NEWTEK is a deep trust in the world's leading gas technology and full industry chain services. As a world-class gas group with a global presence, NEWTEK focuses on "advanced gas and cryogenic technology to enable global growth" and provides stable and reliable gas solutions for various industries with global installation experience of more than 9,000 systems. It is a trustworthy strategic partner.

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Room 8008-8016, Building 2, Taotiandi Commercial Plaza, Hangzhou, China.

Phone Number

+8615336587300

E-mail

sales@newtek-group.com