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LFG Baltic – Best practice and lessons learned report

As a result of the LFG Baltic project the experiences of landfill gas extraction and utilisation in Lithuania, Poland and Sweden have been compiled in a report. Furthermore two innovative landfill gas technologies developed in Denmark and Iceland have been added.

The information has been gathered by Dr. Andrius Tamosiunas, deputy director Lithuanian Energy Institute, Dr. Robert Aranowski, Gdansk University of Technology and Dr. Jörgen Held, CEO Baltic Energy Innovation Centre. International landfill gas experts, invited to the LFG Baltic seminar organised in collaboration with REGATEC 2019, have contributed with important input.

As a result of the European Landfill Directive less and less organic material is landfilled and by time the methane content in the landfill gas decreases. In order to take advantage of the energy content in the extracted landfill gas technologies able to use landfill gas with low methane content are of great interest. In the report several such technologies are presented, such as Micro turbines, Stirling engines, dual fuel engines and thermal oxidisers.

Visit at Rönneholm waste management facility

On the 9th of September Jörgen Held visited Rönneholm waste management facility outside Eslöv, Sweden. At the Rönneholm landfill two Stirling engines are used to produce heat and power.

Rönneholm
Maria Persson and Martin Svensson, MERAB, standing between the two Stirling engines. Photo: Jörgen Held

The two Stirling engines were installed in 2012. The capacity is 7 kW power per Stirling engine. Notice that there is no need for ear protection when the Stirling engines are running. In fact it was possible to have a normal conversation.

While normal spark ignited gas engines need landfill gas with a methane content of about 40% the Stirling engines are able to operate down to ~15-20%.

 

Visit at Deponigas ApS

On the 1st of September 2019 Jörgen Held visited Deponigas ApS in Denmark within the framework of the LFG Baltic project. Deponigas ApS has developed a dual-fuel concept which allows utilisation of low calorific landfill gas with methane content down to ~10% as fuel for power production.

Ole Elmose
Ole Elmose, Managing Director Deponigas ApS, beside the Volvo Penta engine running in dual fual mode at Hedeland 1 outside Roskilde, Denmark.

Deponigas ApS operates 8 facilities around Denmark. Diesel engines from Volvo Penta, John Deere and Cummins have been modified to operate in dual fuel mode. Diesel is used to ignite the lean pre-mixed landfill gas/air mixture which gives a simple and robust operation. The engines are able to operate over a wide range of loads but Deponigas ApS has developed strategies to operate them at a high load to keep the diesel consumption low in relation to the landfill gas consumption.

LFG Baltic seminar at REGATEC 2019

LFG Baltic will arrange a seminar on landfill gas extraction and utilization in collaboration with 6th International Conference on Renewable Energy gas Technology, REGATEC 2019 at Scandic Triangeln, Malmö, Sweden 20-21 May 2019.

In addition a maximum of 10 posters from the Baltic countries and Europe´s Eastern partnership related to landfill gas will be able to get their travel, hotel and conference costs up to 900 EUR/person covered.

For more info visit the REGATEC 2019 website.