| Abstract [eng] |
With the rapid development of the agriculture, the use of biomass of agricultural origin in energy has become extremely relevant, since these resources are large enough, but poorly studied [40]. Nut shells, sunflower husks, olive pomace, hemp processing waste or other types of agro biomass are characterized by a particularly unstable fractional composition and a high content of potassium (K), sodium (Na), chlorine (Cl), sulphur (S) and phosphorus (P). With different concentrations of these elements, the fuel burning technology itself also differs. Most alkali metals vaporize at a temperature of 700-800°C, then the vapours of potassium (K) and sodium (Na) in the gaseous state react with sulphur (S) or chlorine (Cl) to form sulphates or chlorides of potassium (K), sodium (Na), which become aerosols. Therefore, at low combustion chamber temperatures, potassium and sodium are expected to remain in the bed material and not evaporate as aerosols. During the completion of this thesis, it is planned to carry out experiments related to the burning of agricultural biomass in a lowtemperature bed to reduce the concentrations of alkali metal aerosols. Alkali aerosol concentrations are expected to be much lower if the fuel is burned at extremely low bed temperatures of 600˚C to 700˚C. |
