China Cryogenic ASU Manufacturers and Suppliers - Buy Cryogenic ASU Made in China

Your professional cryogenic ASU 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 ASU

Cryogenic Air Separation Nitrogen
Cryogenic air separation equipment is an advanced technology based on the liquefaction of air, which can effectively separate nitrogen, oxygen and argon. This process is called cryogenic air separation.

Cryogenic Air Separation Plant
The air enters the filter through the air inlet to remove dust and impurities to ensure the purity of the air. Subsequently, the air flows into the centrifugal compressor for compression, and the compressed air enters the turbine expander for expansion, and after cooling, it flows into the cooling tower for preliminary cooling.

Cryogenic Air Separation Unit
The air separation process determines the investment, energy consumption, operational safety, operational stability and operability of the air separation unit from the source. The optimization and selection process of the air separation process is a process to address the concerns of all stakeholders in the air separation unit.

Cryogenic Equipment
The technology of cryogenic air separation unit has become increasingly mature, mainly reflected in the fact that the cryogenic air separation process has not undergone fundamental changes since the full distillation argon process appeared nearly 30 years ago. With the development of the global economy, energy crisis and environmental degradation have come along.

Cryogenic ASU Equipment
Cryogenic ASU Equipment (Air Separation Units) is an advanced gas production system that operates on the principle of cryogenic distillation, separating ambient air into its primary components: oxygen, nitrogen, and argon. By compressing
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Liquid Air Separation Plant
Liquid air separation devices can convert air into liquid form, and then accurately separate oxygen, nitrogen, argon and other gases by using the differences in boiling points of the components. In industry, high-purity oxygen helps steel
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Gas Cryogenic Air Separation Plant
Gas Cryogenic Air Separation Plant (ASU) separates air into a variety of high-purity gases through compression, cooling and ultra-low temperature distillation technology. It can produce oxygen, nitrogen and argon with a purity of over
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Cryogenic Air Separation Nitrogen
Cryogenic air separation equipment is an advanced technology based on the liquefaction of air, which can effectively separate nitrogen, oxygen and argon. This process is called cryogenic air separation.
read more
Cryogenic Air Separation Plant
The air enters the filter through the air inlet to remove dust and impurities to ensure the purity of the air. Subsequently, the air flows into the centrifugal compressor for compression, and the compressed air enters the turbine expander
read more
Cryogenic Air Separation Unit
The air separation process determines the investment, energy consumption, operational safety, operational stability and operability of the air separation unit from the source. The optimization and selection process of the air separation
read more
Cryogenic Equipment
The technology of cryogenic air separation unit has become increasingly mature, mainly reflected in the fact that the cryogenic air separation process has not undergone fundamental changes since the full distillation argon process appeared
read more

Air Separation: Cryogenic or Not

In both processes, the air is compressed and the heat of compression is removed. Sometimes further cooling is achieved via shell-and-tube exchangers or direct contact aftercoolers using both cooling water and chilled water.

Downstream of air cooling, the two methods of production differ significantly. For cryogenic plant, to ensure safety and facilitate an efficient process, it is critical that contaminants such as CO2, water vapour and heavy hydrocarbons are removed from the air. This is achieved using temperature swing adsorption (TSA). The adsorber vessels contain beds of activated alumina and molecular sieves. They operate cyclically, alternating between adsorption and regeneration, achieved with dry waste gas. Some of the lighter hydrocarbons pass through the TSA and into the cold box where their concentration is monitored and controlled.

In the non-cryogenic process, hydrocarbons, moisture and particulates are removed using carbon towers, filters and mist eliminators. The process gas then enters a pressure swing adsorption twin-bed system using a carbon molecular sieve which separates oxygen and CO2 from the air.

Different adsorbents attract certain gases more strongly than others. For example, in nitrogen production, oxygen is preferentially adsorbed on the bed whilst a nitrogen-rich stream is recovered as product. Exhaust gases are vented to atmosphere. Other technologies such as membranes are used to produce typically 95–99.5% nitrogen in typical volumes of 25 t/d. Vacuum swing adsorption is an alternative means of low-purity oxygen production for markets such as glass, wastewater treatment, cement production, bio-fuels, metals production, pulp and paper and steel. The range of oxygen production varies from 5–500 t/d.

Cryogenic Air Separation Plant Technology

Filtration, compression, pre-cooling and purification
Through the suction port air flows into the air filter where dust and mechanical admixtures (impurities) removed from the air and then it flows into centrifugal compressor for compression. Compressed air gets into the turbo expander. Expanded air flows into air cooling column, the system of preliminary cooling, where the air is cooled by interacting with chilled water that comes from the cooling tower. At the top of the air cooling column installed inertial separator and made of wire gauze separator to prevent water from getting into the process air.
Process air from precooling system enters purification system to remove moisture, carbon dioxide and hydrocarbon. Purification system consists of two double vertical adsorbers and when one is working, the other is regenerated by electric heater and heated waste nitrogen from cold block.

Rectification
Pure process air from the purification system gets into the main heat exchanger of the cold block and is cooled by reverse flow gas. When cooling process reaches certain temperature, the part of pure air enters expander for the expansion, and then air flows back to the main heat exchanger for new heating. Then remaining air cools and liquefies in the main heat exchanger. Liquefied air gets into the bottom part of lower column. At the lower column increasing amount of gas fully mixes with the descending liquid resulting in heat exchange. The result of this heat exchange is the release of pure nitrogen from the air and its concentration in the upper part, while in the lower part oxygen-enriched air is generated. Pure nitrogen enters the main evaporator of the condenser, gaseous nitrogen compresses, and at the same time, liquid oxygen evaporates. Part of liquid nitrogen is used in lower and upper columns, while the rest of the nitrogen is supplied to the consumer as a final product.
Produced in the lower column liquid oxygen is cooled and fed to the upper column for rectification. In the upper column liquid oxygen, gaseous oxygen, gaseous nitrogen and liquid oxygen, liquid argon are produced.

Extracted from the upper column waste nitrogen is reheated through the pre-cooler and the main heat exchanger and then it enters the purification system for adsorbers recovery.

Cooling system
Turbo-expander provides cold generation that is required for air separation plant. Compression of dry air to 1.3 MPa is carried our in the centrifugal compressor stage of the turbo-expander. After compression stage dry air cools in the intermediate water cooler. From water cooler, air enters main heat exchanger and after cooling to the temperature of 152 K, one part of the air is sent to the turbo-expander, the other part of the air is choked into the lower column. In the turbo-expander, air expands to the pressure 0,14 MPa and discharges into the atmosphere through the main heat exchanger.

Why Choose US

01/

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.

02/

Technical Certificate
Strict quality control measures have been implemented and certified by ISO 9001:2015 and CE.

03/

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.

04/

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 reliability

FAQ

Q: What is the process of ASU unit?

A: In an ASU, atmospheric air is filtered to remove any impurities such as dust, water vapor, and carbon dioxide. After filtration, the air is cooled and compressed to high pressures. The compressed air is then passed through a heat exchanger where it is cooled to a temperature of about -165°C.

Q: What is the unit of measurement ASU?

A: Arbitrary Strength Unit (ASU) is an integer value indicating the received signal strength measured by the mobile phone. It is possible to calculate the real signal strength measured in dBm by a formula.

Q: Why choose a cryogenic ASU?

A: The air separation process determines the investment, energy consumption, operational safety, operational stability and operability of the air separation unit from the source. The optimization and selection process of the air separation process is a process to address the concerns of all stakeholders in the air separation unit.

Q: Is your cryogenic air separation unit reliable?

A: This requires that the economic potential of the device be explored as much as possible in the process selection and design, and the operation stability and reliability of the device be improved.

Q: Applications of technology of cryogenic ASU?

A: —Production of pure oxygen
—Production of pure nitrogen
—Production of pure rare technical gases and gas mixtures
—Separation of end blowdown gases from the ammonia production units.

We're professional cryogenic asu manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy cryogenic asu made in China here from our factory.

Cryogenic Air Separation Nitrogen, Cryogenic Air Separation Plant, Modular Air Separation Plants