Introduction iLNG Energy densifica on by making LNG from any gas source has been a challenge for decades. The evolving market for LNG demands a small scale, local solu on to convert biogas to Liquid Bio Methane (LBM). Osomo has made a huge step forward by introducing their patented iLNG technology to control the complex dynamics and physics of gas separa on and phase transi-

on at cryogenic condi ons. This makes the concept of local, micro-scale liquefac on of bio-gas economically feasible.

Technology description iLNG Solution

‘Unique scalable integrated system’

The process line-up developed by Osomo comprises three basic process steps:

1. Bulk removal of contaminants with standard membrane gas separa on technology.

2. One-stage liquefac on at pressurized condi ons with S rling Cryocooler

3. A er treatment by end-flash and polishing of Liquid BioMethane in a 3-phase separator to its final condi ons.

‘Closing the gap between the opera ng envelope of standard gas trea ng and liquefac on’

Modular build-up allows expansion to virtually any capacity. Integra on improves the perfor-mance of the individual process steps by making op mal use of physical proper es of the va-pour and liquid mixtures. CO2 tolerant liquefac on is made possible by selec ng the right pro-cess condi ons and equipment. Figure below shows that the opera ng envelope of gas trea ng & liquefac on is extended.

 

 

 

3rd Interna onal Conference on Renewable Energy Gas TechnologyMalmö, Sweden 2016

MScJeromvanRoosmalenOsomoProjectsBV,Director,patentholder,‘tVeld3‐L,6666MK,Heteren,Netherlands;jerom@osomo.nl

technology now available for licensing

Process steps

‘One cylinder S rling cryocooler with cryogenic equipment in front’  

The simplicity of the concept is demonstrated by having only one (bio)gas com-pressor in the complete process line-up.

1st process step

Biogas compression, followed by typical standard membrane gas separa on (3-stage system), that has been further op mized by a small recycle flow from 3rd process step.

2nd process step

Liquefac on with S rling Cryocooler from DH-Industries. One-stage lique-fac on at pressurized condi on is a very tolerant way of liquefying gas mix-tures, even with a fast changing gas composi on or flowrate. The system has a wide opera ng envelope without freeze-up of water and CO2.

3rd process step

LBM is produced at end-condi ons by pressure reduc on (end-flash) and separa on of solid contaminants. Traces of impuri es that are off-radar will be handled by the polishing step, the 3-phase separator. Aroma cs, exces-sive CO2, water, H2S, THT, siloxanes or any substance that will crystallise in the Liquid Bio Methane is removed up to its solubility limit in LNG, which is extremely low in most cases.

USP’s & Results Constant high quality of Liquid BioMethane

Wide bandwidth of gas mixes, flow and impuri es

Easy to operate

Easy start-up and recovery: < 10 min, steady state < 1 hour

Efficient: specific energy 1,2 kWh/kg output

Li le rota ng equipment

Variable capacity from 0 to 100%

Modular setup, scalable to any size

Patented technology

Process simula on and patent have been validated by actual field measurements at the digester-biogas-LBM pilot plant at BioScience Center in Lelystad (University of Wageningen). Endurance tests have also confirmed the opera onal robustness of the design.

Technology & Licences iLNG Osomo Projects BV has designed, built and operated a Liquid Bio Methane pilot installa on, which has proven their patented iLNG technology. Simula on results show a very close match between theory and actual test run data of the LBM pilot unit. The concept makes it possible to produce LBM locally and efficiently from raw biogas at a very small yet economical scale.

Osomo Projects BV Jerom van Roosmalen Jerom@osomo.nl +31 6 41237658

‘t Veld 3-L NL-6666MK Heteren The Netherlands