空分设备启动阶段,设置连接空冷塔空气出口管到水冷塔氮气入口管的启动管线,用于降低开车初期空冷塔排出空气的温度,缩短开车时间。但是经过计算发现其效果并不明显,而且设置后还存有许多安全隐患,所以在常规空分流程中设置的必要性并不大。介绍启动管线的工作原理,分析启动管线的性能和安全隐患。 Air separation plant start-up phase, set the connection air cooling tower air outlet pipe to the water cooling tower nitrogen inlet pipe of the start-up line, used to reduce the air-cooled tower early drive air exhaust temperature, shorten the driving time. However, after calculation, the effect is not obvious, and there are many hidden dangers after the setting, so the necessity of setting in the conventional air separation process is not great. Introduce the working principle of starting pipeline, analyze the performance and safety hazard of starting pipeline.