PSA-type Nitrogen Generators
Low cost, high quality
For large-volume and high-purity applications, the PSA method is recognized as the optimal choice for nitrogen generation. Kaken Geneqs developed the PSA-type Nitrogen Generator to complement membrane Nitrogen Generators, which generally show insufficient cost performance in such applications.
Focusing on the essentials, with thorough trimming down and downsizing, lead to best-in-class economy. The use of high adsorption rate MSC and the application of a load proportional control strategy to the intake air has resulted in a reduction of air intake volume as well as lowering running costs.
Operating Principle of PSA-type (pressure swing adsorption)
The molecular sieving carbon packed in an adsorption tower, under a pressurized environment, tends to selectively adsorb molecules with smaller diameter, and release larger diameter molecules (i.e. nitrogen) instead. The PSA method utilizes this property to concentrate nitrogen.
PSA-type Nitrogen Generator Features
- A compact system design for ultimate cost-cutting
- All you have to do is to turn the switch on to produce high-quality nitrogen (99–99.99% purity)
- High-efficiency MSC means a high level of energy saving
- A load proportional control strategy, which adjusts intake air volume as a function of the gas flow, decreases start/stop frequency leading to power savings
- User-friendly touch panel screen layout with easily identifiable information (oxygen concentration, intake air pressure, adsorption tower pressure, gas flow rate, etc.) for simple operation
- Maintenance-focused system design: compressor operating time is kept as short as possible
- Optional display languages provided as standard: Japanese, English, and Chinese
- Compared to membrane Nitrogen Generators, PSA equipment is more suited for applications with nitrogen flow demand greater than 10 Nm3/h
Effects of PSA-type Nitrogen Generator
- Reduction in the frequency of mold maintenance
- Reduction in the number of mold cleanings
- Reduction of burn marks on plastic molded products
- Reduction of soot on plastic molded products
- High dew point (removal of moisture and maintenance of dry state)
- Oxidation prevention
PSA-type Nitrogen Generator Operation Screen (Touch Panel)
Standard Specification Example
The customer is advised to prepare the following information before contacting us: required gas volume, required purity, and type of application. This information will help us recommend whether a membrane-type or PSA-type scheme is suited to your environment.
| Type | KPN-P8E | KPN-P8EM | |||||
|---|---|---|---|---|---|---|---|
| Nitrogen specifications | Separation method | PSA method | |||||
| Purity (%) *1 | 99 | 99.9 | 99.99 | 99 | 99.9 | 99.99 | |
| Flow rate (m3/h) *2 | 15 | 9 | 5 | 22.5 | 13 | 8 | |
| Compressor (approx.) (kW) | 7.5 | 11 | |||||
| Others | Size (W×D×H; mm) *3 | 850 × 650 × 1800 | 950 × 950 × 1875 | ||||
| Weight (kgf) | Approx. 450 | Approx. 550 | |||||
- *1 Purity indicates the volumetric ratio (e.g. nitrogen + argon)
- *2 Flow rate is evaluated under the following conditions: atmospheric pressure, intake air pressure 0.8 MPa/25℃, and humidity ≦ 60%
- *3 Dimension values represent those of the main nitrogen gas generator unit. Protruding parts may not be included.
