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Potential of Forest Wood Biomass in Bulgaria, Market and Possibilities for Its Utilization

Journal of Agricultural Science and Technology(B) 2013年第2期3卷 116-124页

作者： lvubcho trichkov Dinko Dinev Executive Forest Agency Sofia 1040 Bulgaria Oak Forest Experimental Station Bourgas 8008 Bulgaria

The total annual increment in forests in Bulgaria is about 14.5 Mio m^3 of the growing stock, of which the harvesting amounts at 5-6 Mio m^3 of fallen wood. An increase of the actually harvested quantities of wood is possible and it may rise up to 8-10 Mio m^3. The volume of forestry waste is 1,066,900 m^3, incl. economically accessible forestry waste are 373,400 m^3. Every year, there are about 3.0 Mio m^3 of wood which are obtained by the wood category, being 2.5 Mio m^3 of that same one used by the population as fire wood for stoves about 40% efficiency. In that connection, a map has been elaborated of the economically accessible forest-wood waste from the wood harvesting. Taking into account the data on the share of that wood, is considered capable for energy production, as well as the fact that a part of fire wood shall not be used in the conventional way but shall be processed, instead, that is to say, transformed into chips, pellets and briquettes, a map of category of woods has been made for the purposes and needs of this elaboration. There are some reserves as regards to thinning operations where small- and medium-sized wood is harvested and from temporarily inaccessible forest exploitation basins or the so called ＂closed basins＂ should arrive to. This paper proposes the most promising technologies for waste processing and transformation into chips, which could be applicable in Bulgaria and in some other countries as well.

关键词： Renewable energy wood biomass logging residues utilization

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