在用于在垂直炉（1）具有大致正方形横截面，其中在至少一个水平面在每个燃烧室壁（2-5）的至少一个燃料粉尘燃烧器（6）是由每个燃料粉尘燃烧器的至少一个燃料布置燃烧燃料粉尘的方法 空气混合物（9）和次级空气切向地面向的假想圆（K1）被注入到燃烧室和额外的空气被供给需要用于燃烧的燃烧室，提供以促进涡流的燃烧室内的控制即 建立一个涡流燃烧器（6），所述的二次空气（10）围绕所述主空气（9）和所述主空气和/或扭曲的二次空气（11），该旋流燃烧器（6）被分别基本垂直于所述燃烧腔室的壁（3）对准， 并且，每个旋流燃烧器（6）和相邻的他的燃烧室壁（2）之间具有第二对准 假想圆（K2）在同一水平面上，气体（12; 14）在所述燃烧室（1）被吹出，其特征在于，一次空气和/或二次空气的一方面和另一方面的气体喷射可以是vertrimmt。

In a method for burning fuel dust in a vertical firebox (1) with a substantially square cross section in which in at least one horizontal plane in each combustion chamber wall (2-5) at least one fuel dust burner (6) is disposed, of each fuel dust burner at least one fuel air mixture (9) and secondary air tangentially to an imaginary circle (K1) aligned are blown into the furnace, and the furnace for combustion required additional air is supplied, is provided to facilitate the control of the swirl in the combustion chamber that to build up a swirl burner (6), the secondary air (10), the primary air (9) wrapped and the primary air and / or the secondary air swirled (11), that the swirl burner (6) is respectively aligned substantially perpendicular to the combustion chamber wall (3), and that between each swirl burner (6) and an adjacent him furnace wall (2) aligned with a second imaginary circle (K2) in the same horizontal plane, a gas (12; 14) is injected into the combustion chamber (1), wherein the injection of primary air and / or secondary air on the one hand and of gas can be vertrimmt other.