Factors influencing the heat exchanger of the large air separation unit

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 ...

The start-up operation of the fractionation tower of a small air separation unit is crucial. During the start-up operation, the logistics, temperature and pressure in the system change dramatically. Before the small air separation unit start-up operation must be completed before the preparation work. 1, in accordance with the requirements of the technical conditions for the installation of small air separation unit to test and test qualified. 2, air purification system switching mechanism is c...