论文部分内容阅读
各种不同结构的双喷管烧嘴在冶金工业中得到广泛地应用。在各种加热炉、热处理炉以及干燥炉中,最常用的是型烧嘴或套管式烧嘴。型烧嘴的有限热功率变化范围(1:8)及其实际不变的空气流量系数,使得实现规定的操作制度和扩大炉膛温度变化范围(从250～1300℃)变得更加困难。这项任务常常要在同一炉子中采用不同类型尺寸的烧嘴才能完成,这样就造成燃料的超额消耗,而且还会使烧嘴的维护操作复杂化。安装了这类烧嘴的炉子,不可能分阶段地改变燃料和空气的流量,这就排除了推广
A variety of different structures of dual nozzle burner in the metallurgical industry has been widely used. In all kinds of heating furnace, heat treatment furnace and drying furnace, the most commonly used type burner or bushing burner. The limited thermal power range (1: 8) and its virtually constant air flow coefficient make it more difficult to achieve the specified operating regime and expand the furnace temperature range (from 250 to 1300 ° C). This task is often done by using different size burners in the same furnace, which results in excessive fuel consumption and also complicates burner maintenance. Furnaces equipped with such burners are not capable of changing the flow of fuel and air in stages, which precludes promotion