The pyrolysis is the widespread technological solution for the processing of various wood wastes  which allows obtaining three different products in solid, liquid and gaseous phase. Liquid product of biomass pyrolysis is called bio-oil. While the pyrolysis could be either exothermal or endothermal, sometimes supplying of additional heat is required. The combustion of bio-oil obtained could be the appropriate source of such heat. However, due to significant variation into chemical composition and physical properties, its introduction into fuel-burning equipment could be quite problematic because of large amount of characteristics influencing this process. The current study is devoting to complex research on properties and combustion characteristics of bio-oil retrieved at industrial pine wood pyrolysis facility. Large number of standard characteristics was obtained as well as data on atomization and combustion performance in conditions close to actual industrial equipment. The analysis was realized according to standardized methodic in case of physical properties (density, kinematic and dynamic viscosity, ash content, calorific value, fractional composition) while for other research the unique equipment and specially developed approaches were applied. The elemental and functional compositions of studied samples were determined via Flash 2000 CHNS analyzer and gas chromatograph Agilent 6890N with mass-selective detector Agilent 5973, respectively. The oxidation characteristics of bio-oil samples were studied using DTG analyzer Netzsch STA 449 F3 Jupiter. The atomization was studied using experimental setup with pneumatic-mechanical nozzle  via particle image velocimetry method at 0.3 and 0.28 MPa pressures of supplied fuel and air, respectively. The combustion process features were investigated using experimental setup for liquid fuel droplets burning equipped with high-frequency video camera and in-line gas analyzer . All combustion tests were performed in temperature range 400-800 ºC. The ignition delay time, duration of flaming burning and burnout of bio-oil droplets were determined as well as concentrations of main anthropogenic substances (CO, CO2, NOx etc) in the flow of released gases.
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|Position of speaker||Associate professor|
|Affiliation of speaker||Tomsk polytechnic university|
|Publication||Impact Factor journals|