Combustion apparatus

摘要

A combustion apparatus provided with a burner (1) includes a fuel injection nozzle (4) disposed rearward of a gas passable solid (3) and a premixture region (8) between a downstream end of the solid (3) and the fuel injection nozzle (4). The gas passable solid (3) may be of a straightener type. Air for combustion includes main air and pilot air separated from each other. The apparatus may be coupled to each end of a radiant tube (32). The apparatus may be provided to a direct and indirect combustion type thermal facilities (200, 201).