我厂延迟焦化装置有加热炉两台,设计最大热负荷为1,600×10~4千卡/时,采用板式无焰火嘴。长期使用,发现火嘴有以下缺点:(1)不易做到稳定、正常的无焰燃烧,易回火或变成有焰燃烧,火焰扑烧炉管,以致多次造成炉管烧穿被迫停工事故;(2)对燃料压力、组成等变化的适应性差,稍有变动即易产生回火、爆鸣及燃烧不良等现象; I delay the plant coking furnace has two, the maximum design thermal load of 1,600 × 10 ~ 4 kcal / h, the plate without flame. Long-term use and found that the fire mouth has the following disadvantages: (1) not easy to achieve stable, normal flameless combustion, easy to turn or into a flame-burning, flame burning furnace tube, resulting in repeated firing furnace tube forced Downtime accidents; (2) poor adaptability to changes in fuel pressure and composition, slight changes such as tempering, popping and poor combustion;