Methane Refining for Tractor Semi-Trailer Fuel

 
Terix-Envirogaz provides the equipments and engineering services necessary to the methanization of organic material and biomethane refining. Terix-Envirogaz’s rugged industrial approach can process both landfill and methanization plant biomethane, and transform it in fuel appropriate for transport and injection in gas distribution lines.

Biomethane refining 

The process developed by Terix-Envirogaz transforms biomethane coming in from landfills and digesters into fuel for tractor semi-trailers or natural gas for injection in gas distribution lines.

The solution allows processing of all contaminants in only one step, is very rugged and minimizes power consumption.

The process is divided into four steps:

1. Conditioning phase, when biomethane is dehydrated and contaminants (such as BTX [benzene-toluene-xylene], siloxanes, C2 -C6 and C6+) are eliminated.
2. Compression phase, when biomethane is compressed between 20 and 25 bars.
3. Refining phase, an absorption-desorption process based on a methanol-cooled liquid. At this stage, CO2 and H2S are separated from the biogas to become biomethane. This phase can also contain two optional systems. One is for CO2 polishing (98% to 99.99% CH) and the other is for eliminating inert gases, a step necessary to the production of liquified biomethane (LBM).

4. Liquefaction phase (for the production of LBM), that uses the compression-expansion phases of nitrogen during a cryogenic process in a perlite-sealed box.