2 COMBUSTOR TO ENHANCE THE NATURAL CONVECTION USING SECONDARY AIR

摘要

PURPOSE: A combustion device for accelerating the natural circulation of exhaust gas is provided to reduce the heat loss of a wall surface and thermal NOx by using second air and accelerating the natural circulation of exhaust gas. CONSTITUTION: An inner barrel(22) is installed at the front of a chamber(10). A high-temperature gas recirculation passage(20) is formed between the inner barrel and the chamber. A plurality of support pieces(26) are radially installed between the outer circumference of the inner barrel and the inner circumference of the chamber, and support the inner barrel. A ring-shaped isolation plate(24) made of fireproof material is mounted at the inner circumference of the chamber, and isolates part of high-temperature gas flowing downward. A second air supply line(30) supplies second air to the high-temperature gas recirculation passage.