目前美国老化房系统广泛用于干法除尘的喷嘴有两种：一种是高压水喷嘴，供水压力要达到20#40MP.;用得更多的是一种新型气体雾化喷嘴，其主要特点是可以在最小/最大喷水量1:10的范围内调节时，老化房颗粒的平均直径保持在约50~80Nm3，因而在1001以上的烟气系统中能保证迅速100%蒸发，从而确保烟气温度精确控制在要求温度的±20°C偏差范围内；而且老化房本身也能除去相当一部分粉尘。
At present, there are two kinds of nozzles widely used in dry dedusting system in the United States: one is high-pressure water nozzle with water supply pressure up to 20 40MP; the other is a new type of gas atomization nozzle, whose main characteristic is that the average diameter of particles in the aging room can be maintained at about 50-80Nm3 when the minimum/maximum water injection rate is 1:10, so that the average diameter of particles in the aging room can be maintained in the flue gas system above 1001. It can ensure 100% evaporation quickly, so as to ensure that the flue gas temperature is accurately controlled within the required temperature deviation range of 20 C, and the aging room itself can also remove a considerable amount of dust.
我国杭钢、攀钢等十多家钢厂将这种喷嘴成功用于转炉湿法除尘中，用于汽化冷却烟道和“一文”前，仅喷很少量的水就可以有效地大幅度降低烟气温度，相应降低系统流动阻力；用于“一文”后、尤其多用于脱水器中，则可以有效去除细粉尘。由于烟气流动阻力下降、重度降低，风机实际功率也相应降低。这些效果已经得到生产实践证实。
More than ten steel plants in Hangzhou and Panzhihua Iron and Steel Co., Ltd. have successfully used this nozzle in converter wet dedusting, which can effectively reduce flue gas temperature and flow resistance of the system by spraying only a small amount of water before vaporization cooling flue and "Yiwen". Fine dust can be effectively removed after "Yiwen", especially in dehydrators. As the flue gas flow resistance decreases and the severity decreases, the actual power of the fan decreases accordingly. These effects have been proved by production practice.
