How to make bio-LNG?

Bio-LNG is liquefied methane (CH4) with a temperature of -162oC. The methane comes from biogas, which is produced by the anaerobic digestion of organic waste. This biogas must be treated to seperate the methane from the carbon dioxide (CO2) and some critical contaminants. This step is called upgrading and is complex. The methane purity must be very high before the methane can be liquefied.

 

Making bio-LNG in three generic process steps

Protecting the environment

As both carbon dioxide and methane are greenhouse gases, it is critical that these gases are not released into the air during production of bio-LNG. A closed system which ensures that 100% of available methane from the biogas is converted into bio-LNG and also captures the CO2, not only results in a higher yield, it also protects the environment.

iLNG technology

In the process of making bio-LNG, upgrading and liquefaction are highly critical and closely interrelated process steps. Therefore, Nordsol has chosen to integrate these two steps in our iLNG technology.

iLNG technology enables local production of bio-LNG from raw biogas at an extremely small, yet economical scale. As a result of the tight integration, the equipment count is low, the energy efficiency is high, and there is zero methane slip. Also, the system is designed for integrating carbon dioxide capturing and liquefaction.

All individual technical solutions used in iLNG are proven technologies that are widely used in the world. The innovative approach is in the combination of these technologies in the patented process scheme.

More details about iLNG technology

iLNG technology in Amsterdam, The Netherlands

3,4 kton bio-LNG per year

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