Combustion of Solid Biomass - Type Checking
2008
Lasselsberger, L., Hoehere Bundeslehr- und Forschungsanstalt fuer Landwirtschaft, Landtechnik und Lebensmitteltechnologie Francisco Josephinum, Wieselburg (Austria). Biomass, Logistics, Technology BLT
Biogenic fuels have a high content of volatile (i.e. vaporisable) components, and are usually low in ash and water. Their main combustible components consist of carbon and hydrogen. Even with little heating, the initial organic degradation products are released from the woody matter in trace amounts. From approx. 250°C upwards, the actual thermal decomposition process (pyrolysis or degassing stage) begins in earnest. At this stage the pyrolysis reactions can no longer be controlled, which is one reason why the combustion of wood in a manually fed furnace cannot be controlled by air throttling. An essential task of the designer and operator of a wood furnace is therefore to enable as unimpeded a total combustion of the combustion gases as possible. In Austria, furnaces can only be put into circulation once the certificate of compliance with the emission limits and of efficiency at both nominal and minimum thermal output has been issued following type checking at an accredited testing centre.
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