Your professional cryogenic nitrogen plant supplier
NEWTEK offers a comprehensive portfolio of services and solutions designed to solve the various problems faced by customers in air separation and hydrogen production plants. Our team always puts safety, reliability and operational efficiency first to provide customers with the best solutions.
Types of Cryogenic Nitrogen Plant
Cryogenic Liquid Nitrogen Plant
Liquid nitrogen has a wide range of industrial and medical applications. The working principle of liquid nitrogen plant is based on the cryogenic distillation of liquid air. Liquid nitrogen is nitrogen that is liquid at extremely low temperatures. It is a colorless liquid with a boiling point of (−195.79 °C).
Cryogenic Gas Plant
Cryogenic gas plant is an industrial facility that produces relatively high purity molecular oxygen, molecular nitrogen, argon, krypton, helium and xenon. Since the air is composed of the most common gas in the atmosphere, nitrogen (78%), oxygen (19%) and argon (1%), and the rest is composed of trace gas, the cold gas plant separates air in distillation towers at low temperature (about 100 K / -173°C) to produce high purity gases, such as argon, nitrogen, oxygen, etc., with 1ppm or less.
Cryogenic Nitrogen Generation Plant
Liquid nitrogen generators operate primarily through the process of cryogenic distillation, which allows for the efficient production of liquid nitrogen (LN2) from atmospheric air.
Cryogenic Nitrogen Generator
Our high-performance nitrogen generators extract gaseous nitrogen from ambient air through cryogenic distillation technology, and are widely used in various industrial applications such as inert gas, cleaning, heat treatment, refining and chemical reactions.
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Cryogenic Liquid Nitrogen PlantLiquid nitrogen has a wide range of industrial and medical applications. The working principle of liquid nitrogen plant is based on the cryogenic distillation of liquid air. Liquid nitrogen is nitrogen that is liquid at extremely lowread more
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Cryogenic Gas PlantCryogenic gas plant is an industrial facility that produces relatively high purity molecular oxygen, molecular nitrogen, argon, krypton, helium and xenon. Since the air is composed of the most common gas in the atmosphere, nitrogen (78%),read more
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Cryogenic Nitrogen Generation PlantLiquid nitrogen generators operate primarily through the process of cryogenic distillation, which allows for the efficient production of liquid nitrogen (LN2) from atmospheric air.read more
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Cryogenic Nitrogen GeneratorNEWTEK cryogenic nitrogen generator are an innovative, efficient and economical gas supply solution, an ideal alternative to liquid nitrogen supply. Our high-performance nitrogen generators extract gaseous nitrogen from ambient air throughread more
The capacity of liquid nitrogen storage tanks is usually measured in liters or cubic meters, and the size of the tank is determined according to demand.
The boiling point of liquid nitrogen is -196℃, so liquid nitrogen storage tanks need to be able to withstand extremely low temperatures. The design temperature is usually lower than the boiling point of liquid nitrogen to ensure that the liquid nitrogen remains in a stable liquid state throughout the use process.
The inside of the liquid nitrogen storage tank needs to withstand a certain pressure, which mainly depends on the evaporation rate of liquid nitrogen and the safe discharge requirements of the storage tank. The design pressure must ensure that the tank can safely discharge gas without danger when the liquid nitrogen partially evaporates.
The main structure of the storage tank should use high-quality steel that is resistant to low temperatures or other materials that meet the requirements. Stainless steel is a common choice because it has good corrosion resistance and strength. Insulating materials such as multi-layer aluminum silicate fiber, perlite or foam plastics are used for filling to reduce heat transfer.
The key to the insulation performance of liquid nitrogen storage tanks lies in their insulation time. The insulation layer is designed to reduce the input of external heat to reduce the evaporation rate of liquid nitrogen and ensure long-term storage of liquid nitrogen.
Cryogenic plants for obtaining oxygen and nitrogen present a number of characteristics that are differentiated from other types of gas plant construction:
The atmospheric air is mainly composed of oxygen and nitrogen, while other gases might be present in small quantities, including carbon dioxide, water steam, argon or helium.
Compressed air is obtained by sucking in atmospheric air through a multi-stage compressor. Then, carbon dioxide, moisture and hydrocarbons are eliminated using inter-coolers, moisture separators and industrial refrigerators, a process that culminates in a Molecular Sieve Battery.
At this stage, nitrogen and oxygen follow separate paths through heat exchangers. While oxygen is compressed and directly filled into cylinders, nitrogen will need a high-pressure compressor in order to complete the process.
Pure air is thus obtained and cooled using nitrogen and oxygen. Then, there are two routes for this air: part of it goes through a second heat exchanger and the other part goes through an Expansion Engine, with the aim of producing additional cooling.
An expansion valve is in charge of releasing the air, which has gone through a liquifying process.
When oxygen and nitrogen need to be separated, the process involves distillation using a fractional column that makes use of the different boiling points presented by these elements. This column consists of two parts (lower and upper) and presents a condenser in the middle. Thus, pure Nitrogen moves up to the top of the upper column, while oxygen remains at the bottom.

Why Choose US
Rich Experience
NEWTEK has extensive experience in designing, building and selling more than 2,500 air separation units worldwide, and owning or operating more than 1,500 plants in more than 50 countries.
Technical Certificate
Strict quality control measures have been implemented and certified by ISO 9001:2015 and CE.
Professional Team
The company has a professional air separation design and air separation engineering general contracting technical team, with independent process calculation, project design, unit design, and project general contracting capabilities.
Excellent service
We provide high-quality after-sales service to ensure that your equipment continues to perform at its best and remains reliable over time.
Other Services
Production Capacity
NEWTEK equipment can produce high-purity oxygen with a capacity range of 10 liters/hour to 5000 liters/hour, flexible to meet different needs.
After-sales service
Provide high-quality after-sales service to ensure that the equipment continues to maintain optimal performance and stable reliabilit.
FAQ
We're professional cryogenic nitrogen plant manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy cryogenic nitrogen plant made in China here from our factory.
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