Usage: | Hydrogen, Nitrogen, Oxygen, Argon and Carbon Dioxide |
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Purpose: | Liquefied Natural Air |
Parts: | Air Purification Components |
Application Fields: | Petroleum |
Noise Level: | Low |
Machine Size: | Large |
Customization: |
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Process Description
The air passes through the air filter, enters the air compressor, compresses to 0.7mpa in the compressor, and then enters the purifier after cooling, where the impurities such as water, carbon dioxide and acetylene in the air are removed. The purified air enters the heat exchanger for heat exchange with the backflow polluted nitrogen. A part of the gas is pumped into the turbine expander through the outlet of the heat exchanger, and the expansion provides a cooling source for the whole set of devices. The other gases continue to cool through the second heat exchanger and then enter the rectifying tower, where they are separated by oxygen and nitrogen. Finally, qualified liquid nitrogen is obtained from the top of the rectifying tower. After decompression by the throttle valve, the liquid air at the bottom enters the condensing evaporator at the top of the tower and the nitrogen heat exchange at the top of the rectifying tower, and then passes through the cooler, the second heat exchanger and the main heat exchanger cooling box as the regenerative purifier.
The air separation device is a set of deep-freezing method to extract liquid nitrogen from the air. The process adopts the deep freezing circulation principle of the low pressure turbine expander to make the air into a liquid state. Then, according to the boiling point of liquid oxygen and nitrogen, the air is rectified in the fractionator to obtain more than 99.99% liquid nitrogen.
A cryogenic air separation liquid oxygen plant
1. Air Compressor
Air is compressed at a very pressure of 5-7 bar (kg/cm2). Air can be compressed at such low pressure by trouble free rotary compressor (Screw / Centrifugal Type/Oil free piston compressor of advanced technology are employed).
2. Pre-cooling System
The second stage of the process uses a low pressure refrigerant for pre-cooling the processed air to temperature around 12 deg C before it enters the purifier.
3. Purifier
The air enters a purifier consisting of twin Molecular Sieve driers, working alternatively. The Molecular Sieves remove the Carbon dioxide & moisture from the processed air before the air enters Air Separation Unit.
4. Cooling System
The air has to be cooled to sub zero temperatures for liquification & the cryogenic refrigeration & the cooling is provided by highly efficient turbo expander, which cools the air to temperature almost below -165 to-170 deg C
5. Separation Tower
Oil free, moisture free and Carbon Dioxide free air enters into low pressure fin type HEAT EXCHANGER where the air is cooled below sub zero temperatures by air expansion process in the turbo expander. Air gets liquefied when it enters the air separation column & gets separated into oxygen & nitrogen by the process of rectification. Oxygen is available at the outlet of the ASU at a purity of 99.6%. Nitrogen is also available t the outlet as a second product at purity of 99.9% up to 3ppm simultaneously without loss of oxygen product.
6. Oxygen/Nitrogen/Argon Gas Compressor
The final product in the form compressed Oxygen/Nitrogen goes to the high pressure oxygen cylinders at 150 bar or up to higher as required. This can be done by liquid oxygen pump is same models. We can use oil & water free compressor.
7. Gas Filling Cylinder
Cryogenic equipment flow chart
Characters of cryogenic air separation plant:
Application field | 1. Pharmaceutical industry 2. Chemical industry 3. Electronic industry 4. Environmental protection industry 5. Food preservation industry 6. Indoor oxygen enrichment 7. Aquaculture 8. Aluminum industry 9. New energy industry 10. Other related industries |
Uses of Cryogenic Manufacturing
Liquid oxygen is widely used in hospitals, aerospace, steel smelting and welding industries.Our service for 99.999% purity Cryogenic Air Oxygen Nitrogen Argon Separation Plant for industrial and medical
1. who are we?
We are based in Henan, China, start from 2021,sell to North America(10.00%),South America(10.00%),Eastern Europe(10.00%),Eastern Asia(10.00%),Western Europe(10.00%),Central America(10.00%),Northern Europe(5.00%),Southern Europe(5.00%),Southeast Asia(3.00%).
There are total about 5-10 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Nitrogen Generator,Oxygen generator,PSA generator,PSA oxygen generator,PSA
4. why should you buy from us not from other suppliers?
The company has a professional R&D and technical team.Professional technical support is the driving force for the company's sustainable development.
5. what services can we provide?
Accepted Delivery Terms: FOB,CIF,EXW;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C,Credit Card,Western Union;
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