Nitrogen (N2) Generator Systems for Marine and Offshore Vessels

Nitrogen Systems are one of the most critical equipment for many vessels types such as Chemical, LPG/LNG and also various forms of offshore vessels like FLNG and PSVs.

Generally there are two main types of N2 generator systems in the market:

  1. Membrane Systems
  2. PSA systems

Without going into too much details here, both types of system have their strength and weakness, and are more suitable for different vessel types and operations.

For example, while its cheaper to change the CMS (carbon molecular sieve) of a PSA systems compared to the membrane banks of a Membranes Generator, there are less (in fact almost negligible) moving parts on the membranes skid. This will make a N2 system that is using membranes much lesser to breakdowns and also lower in spares.

Oxygen permeation while nitrogen is retained
Air Separation in a Membrane Fibres

However, there are much more important factors to consider when choosing the right system. Apple-to-apple, a PSA system requires lesser compressed air (air factor) and also at a lower pressure. This greatly cuts down the power consumption and space you need on your compressors, which for some vessels, can be crucial. A membrane system on the other hand, can be designed to give you your required m3/h, while a PSA will need increase the system’s output purity and a therefore a sizeable buffer tank after the PSA module.

Air Products AS (APAS) and Giantech

Air Products is a multi-national company based in the USA and have huge presence in the industrial, marine and offshore sector around the world, in almost every country.

Most importantly, in terms of delivery for marine, offshore and LNG vessels, Air Products is by far the market leader in terms of systems delivered and total capacity*.

Giantech has been the both the service and sales agent for Air Products in Singapore since 2005. We have worked with many ship managers, ship owners for all stages of the life-cycle demands fro the N2 generation onboard vessels and are technically competent to provide services, technical consultation and commercial proposals to meet our customers’ needs.

*2008 – 2013: Air Products achieved a 93% global market share for all contracted LNG carriers.

Read More On Air Products AS >

Benefits of Air Products’ N2 Membrane System:

1. Unparalleled total lifetime

2. Particle, liquid water and oil vapor tolerant membrane

3. Marine-proven membranes for over 25 years.

4. Guaranteed lifetime after sales’ services worldwide


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