The combustion of clean and contaminated waste wood, so-called B wood, has become a common practice in many European countries and is an important source of renewable electricity and heat. It provides a viable and sustainable end-of-life solution for B wood. However, this B wood often contains elements that increase the risk of problems in the boiler of the power plant, including slagging and corrosion. This leads to a lower efficiency and a shorter lifespan of the power plant.
This is not positive from both an environmental and an economic perspective. These ash related problems can possibly be reduced by adding additives.
Proposals are made for additives that can lead to reduced ash-related operational problems, and tests will be carried out on an industrial scale with these additives. Furthermore, it is investigated / demonstrated that these additives actually cause less deposits (and therefore maintenance). It is being investigated / demonstrated that the use of these additives can provide economic and environmental benefits.
Within the Eranet REFAWOOD project, various additives have been tested on an industrial scale in various plants in Poland, Sweden, Austria and Germany.
Refwawood’s results were presented at the European Pellet Conference 2019 in Wels, Austria. You can read the results in this report. Also watch the project videos below.