Factors influencing the heat exchanger of the large air separation unit

The configuration of the high purity nitrogen air separation equipment has the following aspects:   1、 Compressor unit configuration, for the reflux nitrogen plant, the compressor discharge pressure is generally 5-10bar. When the unit is large in scale and the product pressure is high, the product nitrogen compressor can be set separately; For the positive flow expansion nitrogen plant, when the scale i...

Due to the tight start-up schedule of the liquid air separation plant, the cold box was no longer bare cooled after the overhaul. The workers removed the scaffolding and started loading sand directly, while starting the air compressor. After the system was started, the large air separation unitpiping was purged and the dew point was measured. At the end of sand loading in the cold box, the dew point < -65°C is measured at each relevant measurement point and the two expanders are switched ...