Gas-liquid inlet for small air separation units

The liqued air separation plant cooling capacity is cooled between the air compressor and the nitrogen compressor, resulting in a significant reduction in energy consumption and a 50% saving in energy consumption. At the same time the introduction of liqued air separation plant cold capacity eliminates the chiller, expander, but increases the cold balance of the liquefier, in the heat transfer calculation is more difficult in low temperature conditions, the performance of the fluid changes more ...

When the air separation unit is in normal operation, the liquid flows down and can only flow on the tray and flow to the lower tray through the overflow bucket because the supporting force of the rising steam prevents the liquid from flowing down from the small hole of the tray. After shutdown, due to the interruption of rising gas flow, the liquid on the tray can flow from the overflow bucket to the lower tray, and also can flow through the small hole on the tray to the lower tray. This will cause the surface of liquid oxygen and liquid air rise, which may exceed the position of the expansion air outlet pipe, resulting in liquid carrying accident of the expander during restart. Therefore, pay attention to the liquid level position when stopping.