Large scale utilization of biopellets for energy applications - LUBA

To address the sustainability debate, the project has suggested criteria that could be included as measures for the sustainability documentation. Also, the project has looked into existing certification schemes to evaluate their applicability to include sustainabilty as well as their original scope. Further, the project presents other mainly European ongoing (2013) activities to meet the need for sustainability documentation.

The project has successfully developed a prototype sampling device, which live up to the demands for representative sampling under the special conditions in a dust fired power plant. Also, acoustic technology for at-line analysis of particle size fractions have been analyzed together with sampler, and the technology showed promising results for measuring the dust particle properties.

It has been shown that off-gassing and self-heating reactions occur spontaneously in wood pellets, and with different magnitude depending on the wood pellet source and type. The reactions seem to be related to the same chemical processes. Influencing factors may include: pellet age, availability of oxygen, temperature, and wood species. The project has performed an analysis of the Danish requirements for large scale wood pellet storages, and suggests an approach to increase the safety levels.