Nitrogen Gas Generator
Principle of PSA
- It is a PSA type nitrogen gas generator that uses carbon molecular sieves (CMS) as the adsorbent.
Nitrogen and oxygen are separated using CMS, a special adsorbent with countless small pores on its surface. Through pore-size control technologies, CMS utilizes differences in adsorption speed based on molecular sizes of nitrogen (4.3 × 3.0 Å) and oxygen (3.9 × 2.8 Å) to achieve separation.
CMS is filled into two adsorption vessels. Compressed air is sent from an air compressor into one vessel, where oxygen and carbon dioxide are adsorbed. Meanwhile, the other vessel is depressurized to release the adsorbed gases. By alternating this cycle, nitrogen gas can be generated continuously.
Features
- Nitrogen gas supply and stop can be controlled simply with ON/OFF switching, enabling easy operation.
- The equipment operates below 1.0 MPa, making it exempt from the High Pressure Gas Safety Act, eliminating the need for complicated notifications.
- By installing the equipment on-site, nitrogen gas can be generated in-house, eliminating the need for cylinder replacement and concerns about gas depletion.
- Kuraray is one of the few companies worldwide that manufactures both the adsorbent and the equipment, allowing optimized product selection based on customer requirements.
- With more than 40 years of history as a nitrogen gas generator manufacturer and over 4,000 units delivered, we offer proven reliability.
- We have eight service bases in Japan, providing nationwide support for peace of mind after installation.
Product Lineup
- We offer a wide lineup from small to large units, supporting various nitrogen purities and flow rates.
- We also meet purity and pressure requirements for assist gas in laser processing machines.
- Outdoor-use options are also available.
- Excess compressed air from the customer’s factory can also be utilized.
MA Series
- A compact-flow packaged type.
- Uses oil-free air as the feed gas.
- Some compact models come with casters for easy mobility.
MR Series
- Uses adsorbents designed for higher nitrogen production.
- Equipped with a standard touch panel.
- Compatible with both oil-injected and oil-free air compressors.
ME Series
- Uses adsorbents designed to minimize running costs (feed air and electricity).
- Equipped with a standard touch panel.
- Includes a built-in energy-saving system.
Mount Type
- Made to order, allowing proposals tailored to customer specifications.
- Flexible configurations are possible, from high-flow units to low-height multi-tower systems.
Where It Is Used
- Applications include PCB mounting, food packaging, assist gas for laser processing machines, explosion-proof environments, and metal heat treatment furnaces. It is also used in CA storage for fruits and vegetables, ship purging, and oxidation prevention during resin molding.
