Influence of Temperature and Pressure of Renewable Energy Pyrolysis on Properties of Charcoal

The aim of this work was to determine the temperature and pressure on the quality of charcoal, obtained in the renewable energy pyrolysis of coniferous residues. Charcoal yield is found to be steadily reduced with increasing pyrolysis temperature. It was found the pyrolysis temperature increasing up to 700 °C, the pressure decreasing up to 0.1 MPa and the yield of charcoal decreasing up to ~34.5%. It is proved that the renewable energy pyrolysis temperature increasing up to 700 °C at a constant pressure level (0.1 MPa), as well as the pressure increasing up to 2 MPa at a constant temperature (550 °C) leads to an increase in FC d and HHV. The generalization of the obtained experimental studies makes it possible to optimize the renewable energy pyrolysis of coniferous residues in industrial conditions.