PL402763A1 - Combustion method for wood waste in the form of biomass in the central heating furnace and a furnace for use the method - Google Patents

Abstract

Wood waste (1) is gasified in a grate chamber (5) by combustion in the absence of air, obtaining wood gas. In the furnace chamber (8), biomass (1 ') is burned from above and initially wood gas. In the high-temperature chamber (7), wood gas is burned in the main process, the unburned wood gas residues from the combustion chamber (8) are burned, and the exhaust stream is directed to the afterburner (9), in which unburnt wood residues are burned and directed flue gas stream to the furnace exchanger (10). The first air stream is supplied to the combustion chamber (8), the second air stream is supplied to the high temperature chamber (7), and the third air stream to the afterburner (9). The furnace (2) is equipped with a high temperature chamber (7) located above the grate (6) in the upper part of the combustion chamber (8) and an afterburner (9) located in the exhaust gas flow path between the high temperature chamber (7) and the furnace exchanger inlet (10) . The upper area of the combustion chamber (8), the interior of the high-temperature chamber (7) and the interior of the afterburner (9) are through-connected respectively for the first, second and third air stream with air inlets from the atmosphere. The furnace (2) is used in particular to adapt a central heating furnace, intended for firing with coal fuel (3) and used in single-family homes for burning wood waste (1), such as sawdust, chips, small twigs, leaves, etc.