| abstract |
The utility model relates to a ceramic burner and top combustion formula hot-blast furnace belongs to the combustor field. The coal gas sub-runners in the ceramic burner have two layers of sub-runners sharing one air inlet; two layers of sub-runners in the air sub-runners share one air inlet; in the axial direction of the burner, the uppermost layer is a coal gas nozzle layer, the lowermost layer is an air nozzle layer, and other layers are air-coal mixing layers with air nozzles and coal gas nozzles arranged at the same layer; in the circumferential direction of the combustor, each gas nozzle and each air nozzle are independently arranged at intervals. The ceramic burner can enable air and gas to be mixed more uniformly, is beneficial to advancing the burning ignition position, is beneficial to improving the capability of the burner and reduces the temperature difference of the burner. The ceramic burner is applied to a top-burning hot blast stove, and is matched with a thick-thin combustion technology to reduce the content of NOx in combustion flue gas of the hot blast stove, so that the ceramic burner is a low-nitrogen environment-friendly ceramic burner and the top-burning hot blast stove. |