Abstract
The subject of investigation in this paper is the amount of ash residue during combustion of Sessile oak (Quercus petraea, Mattuschka) wood that is one of the most usable ones as fire wood in households in the Republic of Macedonia. The purpose of this investigation was to establish the amount of ash, as one of the biggest problems during energy production with forest biomass. The material for this investigation is collected from two different regions of the State, in order to eliminate or to emphasise the influence of different stand conditions. The results from the investigation show that during the sessile oak wood combustion the wood produces less ash than wood with bark, and bark produces the highest amounts of ash.
Highlights
The availability of energy is becoming a major issue, and the demand for energy is growing every day
In 10 of them, ash residue was analyzed in pure wood, in 10 of them ash deposit was analyzed in wood with bark, and in 10 of them the residue was analyzed on pure bark
The results of the analysis show that most ash residue is produced during the combustion of bark, and less ash residue is produced during pure wood combustion (Figure 1)
Summary
The availability of energy is becoming a major issue, and the demand for energy is growing every day. Concerning that fact, as well as the fact that the reserves of fossil fuels, such as oil coal and natural gas are limited, the world is turning towards discovering and using alternative, environmentally friendly, and renewable energy resources One of these resources is biomass from forests[1]. Biomass combustion is one of the most rapidly developed methods for green energy production, and the increased production of biomass ash needs further technical management This management is divided into two parts – the first one dealing with the damages and corrosion of boilers, and the second one dealing with the large amount of residue that should be deposited somewhere. Its content is mostly oxidized except for nitrogen which is emitted through exhaust gases in the form of gaseous compounds (NOx) This means that almost all other biomass components are not incinerated and remain as a solid residue. The lack of standardization of the methods used to evaluate the content of ash leads to further possible deviations[5]
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