METHOD FOR DIRECTLY BURNING AND DISPERSEDLY SUPPLYING HEAT IN BIOMASS PYROLYSIS FURNACE

摘要

A method for directly burning and dispersedly supplying heat in a biomass pyrolysis furnace is provided, wherein a heat supply combustion device of the pyrolysis furnace is composed of several burner groups (2), all of which are dispersedly arranged at the upper part of the pyrolysis furnace along the axial direction. Each burner group (2) is composed of several small burner nozzles (3). The highest temperature in the combustion area of the furnace is controlled at less than 1600 0C. The fuel supplying heat for the furnace and the oxidizer are separated before entering into the furnace and burnt in a non-premixed combustion mode in the furnace. The pyrolysis furnace is horizontally arranged and has a fixed casing (1). The biomass in the furnace is stirred by a mixing shaft (4) with bars (5). The highest temperature in the combustion area is regulated by adjusting the heat supplied from the external fuel and/or the content of the inert component in the oxidizer and/or rotating speed of the mixing shaft (4) with bars (5) in the process.