Atlas Copco NGMs Series Nitrogen Generators
The NGMs 1-3 range is a highly efficient nitrogen generator range utilizing membrane technology. These generators are designed to produce nitrogen from compressed air for a variety of applications. Purities range from 95% up to 99.9% (residual oxygen contents of 5% up to 0.1%). The innovative design offers a cost efficient on-demand source of compressed nitrogen for oil and gas, food packaging, general blanketing, plastics, tire filling, and many other industries.
The generator consists of one or multiple high performant membranes that are used together to achieve the nominal inlet flow. This membrane setup ensures a maximum output of compressed nitrogen for a minimum input of compressed air, at a wide range of operating conditions.
In order to allow continuous operation for more than 15 years, these nitrogen generators are equipped with a 2-stage premium prefiltration system ensuring an inlet air quality of [1:-:1] according ISO8573-1:2010. This eliminates the risk of the membrane being damaged by low quality compressed air supply, poor start-ups and unexpected shutdowns.
Atlas Copco NGMs Series Nitrogen Generators Selection Chart
| Nominal air consumption (cfm) | NGMs 1 | NGMs 2 | NGMs 3 | Nominal free nitrogen delivery (cfm) | NGMs 1 | NGMs 2 | NGMs 3 | ||
|---|---|---|---|---|---|---|---|---|---|
| Nitrogen purity (%) | 90 | 9 | 18 | 27 | Nitrogen purity (%) | 90 | 6 | 12 | 18 |
| Nitrogen purity (%) | 95 | 6 | 11 | 17 | Nitrogen purity (%) | 95 | 3 | 6 | 8 |
| Nitrogen purity (%) | 96 | 5 | 11 | 16 | Nitrogen purity (%) | 96 | 2 | 5 | 7 |
| Nitrogen purity (%) | 97 | 4 | 9 | 13 | Nitrogen purity (%) | 97 | 2 | 4 | 6 |
| Nitrogen purity (%) | 98 | 4 | 8 | 10 | Nitrogen purity (%) | 98 | 1 | 3 | 4 |
| Nitrogen purity (%) | 99 | 4 | 7 | 11 | Nitrogen purity (%) | 99 | 1 | 2 | 3 |
| Nitrogen purity (%) | 99.5 | 3 | 7 | 10 | Nitrogen purity (%) | 99.5 | 1 | 2 | 3 |
Operating Principle
Membrane separation is a commonly used technology to separate gases from a mixture.
In a typical membrane process, the gas is first preconditioned to make sure all components that could harm the membrane are taken out before entrance. Next the gas is lead into thousands of single membranes that are all packed together in one membrane housing.
The separation itself is caused by the different permeation speed of the gases through the membrane fiber wall. Some gases will permeate very fast through the wall, meaning they won’t show up at the membrane outlet but at the permeate vent instead. Other gases will take a much longer time or won’t permeate at all, they will remain in big quantities at the membrane module’s outlet. Typically these are the gases we want to capture with our membrane.
In the case of a nitrogen generator, a membrane is selected that will permeate the oxygen very fast and the nitrogen only slowly. That way we can get a good nitrogen purity at the outlet of the generator while having only very few nitrogen losses through the permeate vent.
Both the right selection of the membrane and the control algorithm for the complete nitrogen generator are key to obtain a high quality nitrogen generator.
- Compressed air inlet.
- Nitrogen outlet (retentate)
- Enriched oxygen vent (permeate)
- Membrane fibers
- Membrane housing
Atlas Copco NGMs Series Nitrogen Generators Features & Benefits
Extremely fast start-up – After a push on the start button, the NGMs 1-3 only takes a few seconds to have your nitrogen available at the outlet.
- Nitrogen available right when you need it
- No specialist installation or commissioning, you only need a supply of dry compressed air
High performant membrane – Get the most nitrogen for the compressed air you put in.
- No ageing, our membrane keeps the full performance over the entire lifetime
- Long lifetime due to 2-stage pre filtration built in the generator
- Zero performance loss at high ambient temperatures (high ambient option required)
Maximum uptime – Your nitrogen is available 24 hours a day, 7 days a week.
- Risk of production breakdown due to gas running out is eliminated
- Very low service intensity, only required for oxygen sensor and the built in filters
Cost savings – Get a secure supply of nitrogen and save money at the same time.
- Low operating expenses due to low air factor
- No additional costs such as order processing, refills and delivery charges.
- Low maintenance cost
High nitrogen quality – A perfect match with your application requirement.
- Purities from 95% up to 99.9% (residual oxygen content levels from 5% up to 0.1%)
- Outlet nitrogen dew point of -40°C
Complete machine
- Integrated 2 stage filtration
- Integrated oxygen sensor
- Economizer
- sensor (option)
NGMs: efficiency in low flow nitrogen generation – If you don’t need a generator with a high nitrogen flow and purity, the NGMs is your perfect solution. It meets your specific requirements with Atlas Copco
quality, high efficiency, little maintenance and zero operational costs.
| Weight | 136.7 lbs |
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| Dimensions | 22 × 11 × 45 in |
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