Why Choose Us?
Rich Experience
NEWTEK is the LARGEST supplier and Manufacturer of PSA oxygen and nitrogen gas generators in China. We have been in continuously R&D for the on-site gas generators since 1987.
Reliable Product Quality
Our long experience in advanced O2 and N2 generators designing and customization ensures the high energy saving,high quality and lowest investment cost for the client in market worldwide.
Wide Range of Applications
NEWTEK provides custom oxygen and nitrogen generator solutions to a wide range of industries. Whether it is wastewater treatment, mining, fish farming, healthcare, tire inflation or laser cutting, we can design and customize cost-effective solutions.
Reliable Product Quality
Our solutions range from oxygen/nitrogen generation units, modular oxygen units to containerized units with built-in air conditioning, all of which can include our innovative NTK series generators - basically whatever your requirements are, we can imagine, design and build your solution in our custom manufacturing environment.
PSA nitrogen generators use a process called pressure swing adsorption to separate nitrogen from other gasses in the air. This method involves passing compressed air through a bed of adsorbent material, which traps oxygen, water vapor, and other impurities. Once the impurities have been removed, pure nitrogen gas is released from the adsorbent material and collected for use. This process is highly efficient and cost-effective, making PSA nitrogen generators a popular choice for industrial applications where high-purity nitrogen is required.
Nitrogen is a colorless, odorless inert gas. It is mainly used for isolation protection, container replacement, pipeline purging, etc. in petrochemical production. The industrial production of high-purity nitrogen mainly adopts the cryogenic production method.
The technology of air-to-nitrogen production with the use of adsorption processes in nitrogen generators is well studied and widely applied at industrial facilities for the recovery of high-purity nitrogen.
It uses the principle of pressure swing adsorption to make the carbon molecular sieve full of micropores selectively adsorb gas molecules, and obtains a new nitrogen production technology with 98.00% to 99.99% nitrogen.
Large-scale industrial nitrogen production generally adopts the traditional cryogenic method, that is, first deep-cold and liquefy the air, and then distill, separate and extract the oxygen, nitrogen and other components through the different boiling points of the components in the air.
Nitrogen Generators for Industrial Applications
The main features of nitrogen generators produced by this technology are simple control, fast speed from startup to nitrogen output, and continuous nitrogen supply using dual towers, which are more suitable for industrial applications such as tire production.
With a modular PSA nitrogen generator, you can get rid of the inconvenience of gas cylinders and liquid nitrogen tanks. Nitrogen is continuously and reliably generated at your site, requiring only a compressed air supply source.
Container type nitrogen plant is a device that can produce nitrogen in a mobile state, usually composed of a container and nitrogen production equipment. It mainly separates oxygen and other impurities in the air through compressed air and separation and purification process to produce high-purity nitrogen.
PSA nitrogen generator is a device used to generate high-purity nitrogen from compressed air. Its working principle is based on the principle of Pressure Swing Adsorption (PSA). It is mainly composed of an intake system, an adsorber, a gas tank and a control system.
Containerized PSA Nitrogen Generator
The advantages of producing your own nitrogen are clear compared to purchasing it. You can control the gas supply at a lower cost and with a lower emissions footprint, and reduce logistical issues and safety concerns.
Advantages of PSA Nitrogen Gas Generator
Convenience
PSA nitrogen generator sensure there is no shortage of gas supply during analysis. Gas can also be delivered on-demand. Maintaining gas stock inventory is not needed. Reordering cylinders in bulk is not required. There is no waiting on the stock.
Reliability and consistency
PSA generators are well known for their capability of delivering gas at a constant rate while maintaining a stable purity. Similarly, there is no risk of contamination in the pipeline that can hamper the function of the processes or workflow productivity.
Low cost of operation
Up to 50% of nitrogen production savings can be achieved if businesses swap out old out-of-date air separation plants. Compared to the costs of bottled nitrogen or liquefied nitrogen obtained in bulk purchase, the net costs of onsite PSA nitrogen generation plants are considerably less.
Reduced carbon footprint
Onsite PSA nitrogen generation is energy efficient and sustainable providing clean, dry, pure nitrogen gas to the process it was intended to support.
Increased Safety
Transportation of nitrogen requires nitrogen gas to be converted to liquid at -196 degrees centigrade or stored at pressures upwards of 200-300 bar or 2900-4350 psi. The loading and unloading of these liquids are hazardous, and possibilities of leaks or spills are high. Such dangerous mishaps can cause injuries or even death. With onsite PSA nitrogen generators, these risks are eliminated and storing the surplus gas can be achieved at a pressure demanded by the application that it is intended for.
Built to suit specific needs
Specific industries require nitrogen gas at remote locations. These areas are not easily accessible, and delivery of nitrogen cylinders is not practically possible. Having an onsite nitrogen generator for industries such as offshore drilling is the best solution. It also allows the industry to adjust the supply and purity as per their application's needs.
How PSA Nitrogen Gas Generators Might Be Used for Industrial Applications
Military Application
The military needs nitrogen to prevent fungus and mould growth on machines, and it is achieved by expelling oxygen. Onsite nitrogen generation also defogs and waterproofs vital optical equipment, including night-vision goggles, binoculars, cameras and telescopes.
Electronic Usage
Nitrogen generation helps in soldering machines automatically by stopping solder oxidation. During the soldering phase or fusing electronic components into permanent connection while gathering electronics, nitrogen gas is used. Nitrogen gas also mitigates surface tension for a more relaxing break away from the electrical bond site. Another electronic application is on computers. For example, nitrogen gas, when applied to the central computer processing system, keeps it from overheating.
Pharmaceutical Application
Nitrogen also serves a greater purpose in the pharmaceutical industry. It helps in preserving sterility and cleaning the pharmaceutical environment for healthiness. Another function is that it aids in restoring manufacturing conditions in an undesirable and hazardous atmosphere. It also aids in preserving foods and the packaging of pharmaceutical products.
Processing Metal and Laser Application
On-site nitrogen generators are also helpful in the metal processing industry. Nitrogen generators in metal industries minimise contact with oxygen, which enhances the end-product quality. Reworking on the same project is also expelled. Regarding lasers, onsite Nitrogen helps lasers greatly. The application of nitrogen in laser distils gas in the steel industry, which is essential during production. It helps eliminate molten material for aluminized steel or firmer stainless products with robust corrosion resistance.
Beverage Storage
Nitrogen is also applied in the beverage production industry. Nitrogen blanket, for instance, keeps bacteria and other microbes from growing throughout storage, pre-bottling, and post-bottling of beverages. Nitrogen also distils air from hoses and pipes before bottling. This process guarantees the expulsion of oxygen while the beverage is transported. The taste of beverages is also p[reserved using nitrogen, which prevents loss.
Food Preservation
Although oxygen is essential for man, it depletes the food freshness and encourages bacterial infestation. Fortunately, nitrogen can expel oxygen during food packaging to eliminate oxidation and bacterial growth, which improves shelf life. Moreover, onsite nitrogen generation denigrates oxygen levels in food processing such as dried foods processing, coffee processing, lettuce packaging, and meat packaging.
How Does a PSA Nitrogen Gas Generator Work?
PSA generators separate nitrogen gas from compressed air by passing it through a carbon molecular sieve (CMS). These sieves have precise and uniform pores that absorb oxygen, carbon dioxide, water vapor, and other impurities. The nitrogen molecules bypass the CMS rather than being caught by it, at which point you can either collect and store or use the nitrogen immediately.
The CMS will eventually become saturated with oxygen molecules, which will prevent further gas separation. To ensure continual operation, PSA generators contain two CMS absorption beds. When one sieve bed becomes full, the generator switches to the other sieve bed. It then depressurizes and flushes the saturated CMS with nitrogen gas. This process removes the oxygen molecules from the sieve, which the generator releases as waste gas.
Purity Levels
The most essential factor to consider when choosing between PSA and membrane generators is the nitrogen purity levels. Nitrogen gas is considered either low or high purity depending on the ratio of nitrogen to oxygen. High-purity nitrogen has a 99.95% or greater nitrogen purity, while low-purity has a range of 90% to 99.9%. Ultra-high-purity nitrogen has a purity level of 99.999%.
Nitrogen generators offer varying nitrogen purity levels:
PSA generators: Thanks to the effective CMS, PSA generators can produce high- and ultra-high-purity nitrogen. This resource is essential for industries and processes that are sensitive to oxygen and other contaminants. Examples include drug manufacturing, metal heat treatment and electronic circuit production.
Membrane generators: Membrane generators produce nitrogen at a lower purity level - between 95% and 99.9% - making them suitable for low-purity nitrogen applications. These use cases include blanketing adhesives, food packaging, purging pipelines, and filling the ullage or vapor space above the fuel in a commercial jet.
Flow Rates
Nitrogen flow rate refers to the volume of nitrogen gas a generator can produce in a given period. It is measured in cubic feet per minute (CFM), cubic feet per hour (CFH), liters per minute (LPM), or cubic meters per hour (M3/h). Certain industries require more control over flow rate for safety and processing requirements. PSA and membrane generators offer different pressures, purities, and flow rates, which are essential to consider when choosing between the two.
PSA generators: Industries requiring high flow rates and high nitrogen purity would benefit from a PSA generator. They offer effective flow rate control while maintaining purity.
Membrane generators: Membrane generators achieve a reliable, steady flow at various rates. The benefit is a smaller footprint. You can control the flow rate by adding or removing membranes. However, higher flow rates can reduce nitrogen purity.
Energy Consumption
PSA and membrane generators all differ in their energy requirements. A nitrogen generator's energy consumption increases with higher flow rates and purity levels. This increases operational costs and environmental impact. Consider the factors that affect energy consumption in each nitrogen generator type:
PSA generators: PSA generators use less energy than membrane generators due to their lower air-to-nitrogen ratios.
Membrane generators: Membrane generators are more economical when an application allows the use of lower-purity nitrogen. However, PSA generators are a more cost-effective option for obtaining higher flow rates and increased purity levels.
Maintenance
Another factor to consider when choosing between PSA and membrane generators is their maintenance requirements and costs:
PSA generators: A PSA generator has multiple moving components that need regular maintenance to operate at peak performance and deliver their expected service life.
Membrane generators: Compared to PSA generators, membrane generators are simpler systems with fewer points of maintenance.
Size
Finally, consider the space available in your facility, altitude and humidity levels before buying a nitrogen generator. If you have limited room in your floor plan, the footprint and height of the generator should be a key consideration.
PSA generators: PSA generators are usually larger than membrane systems thanks to their extra components, double CMS absorption beds, and higher-grade nitrogen output. They also have more complex installation requirements.
Membrane generators: If you need a lighter, smaller system, a membrane generator may be the best choice. These designs can be more compact and easier to install than PSA generators depending on their capacity.
5 Safety Tips for PSA Nitrogen Gas Generator Installation
Check for Leaks
One of the biggest concerns involving the use of onsite nitrogen generators is the potential for too much oxygen depletion or enrichment in the jobsite location. A stable ratio of oxygen and nitrogen in the atmosphere is required. Leaks in the system can occur and alter that ratio by introducing too much nitrogen into the atmosphere if the pipework or nitrogen buffer tank vessel is damaged or leaking. To prevent this from happening, it's important to ensure that the pressure vessels and pipes are properly installed and have an airtight connection during the nitrogen generator installation process. It is imperative to leak test the nitrogen generating system prior to putting it into operation.
Provide Proper Ventilation
Nitrogen generators consist of filtration materials that are used to separate oxygen and nitrogen from ambient air. Enhanced concentrations of oxygen are in the nitrogen generator waste gas stream. For that reason PSA and membrane nitrogen generators need to be located in an area with proper ventilation in order to immediately disperse this waste gas and to prevent it from coming in contact and interacting with other gases and/or chemical compounds.
Use Safety Relief Valves
Under all circumstances safety pressure relief valves must be installed on all pressure vessels.
Install a Pressure Vessel Ventilation System
In the event of a safety relief valve activating due to an over pressurization event sufficient ventilation is required in the vicinity of all nitrogen generator installations to ensure there is no build up of excessive nitrogen levels in the area. A professional nitrogen generator technician will install vent stacks on safety relief valves where required which will ensure that if a safety relief does activate the resultant nitrogen gas stream will be vented to a safe area.
Read Warning and Information Labels
Although nitrogen is an inert gas that doesn't have any adverse reactions with other chemical compounds, warning labels to alert workers of its presence should be prominently displayed on all equipment, vessels, and areas where it's used. That way, workers can take special precautions to maintain proper atmospheric nitrogen levels.
Applications of PSA Nitrogen Gas Generators in Metalworking
Heat Treatment
PSA nitrogen gas generators are instrumental in creating controlled atmosphere environments for heat treatment. They provide a consistent flow of high-purity nitrogen, allowing for uniform case hardening and minimized distortion. This control helps maintain quality and reduces rejection rates, leading to cost savings and improved efficiency.
01
Laser Cutting
In laser cutting, nitrogen serves as a critical assist gas. By removing molten metal, it prevents the formation of dross, reduces edge warping and prevents discoloration of the cut due to oxidation. The result is cleaner cuts and improved overall quality, which are essential for precision manufacturing.
02
Soldering, Brazing, and Welding
Nitrogen's role in soldering, brazing, and welding is to minimize oxidation and protect the weld zone. This results in stronger, more reliable welds and a cleaner aesthetic finish. The use of nitrogen enhances the durability and appearance of metal joints, which is crucial for maintaining high standards.
03
Blanketing and Purging
Blanketing and purging with nitrogen ensure the removal of contaminants before welding or other sensitive processes. This practice is vital for creating a clean environment that supports optimal results, reducing the risk of defects and increasing product integrity.
04
Metal Additive Manufacturing (3D Printing)
In 3D printing, nitrogen acts as a shield gas, preventing oxidation and ensuring the quality of printed metal parts. Its protective atmosphere is essential for producing high-strength components without compromising on surface quality.
05
Choosing the Right PSA Nitrogen Gas Generator for Your Metalworking Needs
Nitrogen Purity Requirements
Identifying the specific purity level needed for your metalworking processes is crucial. The right nitrogen generator should meet these requirements to ensure optimal performance and quality outcomes.
Flow Rate Requirements
Ensuring the nitrogen generator's capacity meets your peak nitrogen flow rate demands is essential. This consideration will help maintain efficiency and prevent delays or interruptions in production.
Maintenance and Support
Selecting a manufacturer with a reputation for excellent after-sales service and readily available replacement parts is vital. Ongoing support ensures that your generator operates smoothly and efficiently over its lifespan.
Safety Features
Safety features like pressure relief valves and instrumentation alarms are important considerations when choosing a PSA nitrogen generator. These features enhance operational safety and provide peace of mind.
Our Factory
NEWTEK is the LARGEST supplier and Manufacturer of PSA oxygen and nitrogen gas generators in China. We have been in continuously R&D for the on-site gas generators since 1987. Our long experience in advanced O2 and N2 generators designing and customization ensures the high energy saving,high quality and lowest investment cost for the client in market worldwide. Engaged in the design, production and sales of PSA oxygen generator, VPSA oxygen generator and other equipment.
Ultimate FAQ Guide to PSA Nitrogen Gas Generator
Hot Tags: psa nitrogen gas generator, China psa nitrogen gas generator manufacturers, suppliers, psa based nitrogen plant, PSA Nitrogen Gas Generator, PSA N2 Plant, PSA Nitrogen Gas Plant, psa tower in nitrogen plant, psa nitrogen generator
