Operation of cryogenic air separation equipment

LNG Cold Energy Utilisation Air Separation Plant is a liquid air separation plant for the utilization of LNG cold energy with a high utilization rate of cold energy, energy saving and environmental protection, high efficiency and safety factor. Liquid air separation plant for LNG cold energy, including air compression pre-cooling system, purification system, air separation system, nitrogen circulation system. The nitrogen circulation system consists of a high pressure heat exchanger to recover ...

The liquid air separation plant includes the lower tower, upper tower, condensing evaporator, argon system, main heat exchanger, subcooler, liquefier and is placed in a separate cold box. After distillation in the lower tower, high purity nitrogen is obtained at the top of the lower tower, which is reheated by the main heat exchanger and then exits the cold box and goes to the nitrogen circulation system to recover the cold from the liquid air separation plant to make liquid nitrogen. The lower ...