Air Products can provide an on-site nitrogen supply solution for any need. Our highly customisable and modular nitrogen generators can flexibly meet the specific requirements of your site. And as well as being cost-effective, our products are also highly reliable and come with a complete package of service and support.
Air Products provides plants that are able to make liquid nitrogen in addition to the primary gaseous nitrogen, which provides a backup for certain customer requirements.
The highest-purity nitrogen gas produced at large flowrates using Air Products’ proprietary cryogenic separation technology, and liquid nitrogen can also be produced.
| Purity: | 1ppb oxygen |
| Flowrate: | up to 11,000 Nm3/ hour |
High-purity nitrogen gas produced at the very largest flowrates, to cover a comprehensive array of applications.
| Purity: | from 5ppm to less than 100ppb oxygen |
| Flowrate: | up to 55,000 Nm3/ hour |
Large volumes of high-purity nitrogen gas produced cost-effectively, with maximum reliability and minimal maintenance.
| Purity: | ≥ 99.99999% with oxygen impurities at the ppb level |
| Flowrate: | up to 4,000 Nm3/ hour |
Atmospheric air is compressed in the main air compressor of the nitrogen generator system and cooled in the compressor aftercooler. The air then passes through a pretreatment system to remove water vapor, carbon dioxide, and hydrocarbons. Inside the vacuum can, the air is cooled and partially liquefied by exchange against outgoing process streams in the main heat exchanger. The cold, partially liquefied air and gas mixture passes into the distillation column. Here the mixture is separated by distillation into nitrogen gas and oxygen-enriched liquid.
Our proprietary high-purity pressure swing adsorption process (PSA) can deliver nitrogen, at purities ranging from 95% to 99,9995%, using significantly less feed air than typical systems.
Reliable and cost-effective on-site nitrogen supply for medium flowrates, using Air Products’ unique, high-performance air separation process.
| Purity: | 95 - 99.9995%, with as little as 5ppm oxygen |
| Flowrate: | up to 2,600 Nm3/ hour |
Compact, cost-effective and easy-to-use on-site nitrogen source for smaller gas demands.
| Purity: | 95 - 99.999% |
| Flowrate: | up to 200 Nm3/ hour |
Atmospheric air is elevated to high pressure by a packaged air compressor. The high-pressure feed air from the compressor passes through filters to remove excess water, oil and other contaminants. The “treated” air enters an adsorption tower where it is contacted with a carbon molecular sieve that binds the oxygen and allows nitrogen to pass through. Purified nitrogen passes to product delivery operation. Once the oxygen capturing capacity in a bed is diminished the feed switches to a new adsorption tower and the old bed is regenerated through rapid depressurization and is ready for the next cycle. The “purified” nitrogen enters a nitrogen receiver tank that provides gas to the absorber vessels during product repressurization and nitrogen buffer capacity.
The PRISM® membrane uses the principle of selective permeation to produce high-purity nitrogen from compressed air. Compressed air flows down the inside of hollow fibers. Fast gases—oxygen, carbon dioxide, and water vapor—and a small amount of slow gases, pass through the membrane wall to the outside of the fibers. They are collected at atmospheric pressure as the permeate. Most of the slow gases and a very small amount of the fast gases continue to travel through the fiber until they reach the end of the membrane separator, where the product nitrogen gas is piped to the application.
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