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 LNG cold, two low temperature circulation nitrogen presses and two gas-liquid separators, which are placed in separate cold boxes. The nitrogen is compressed by two low temperature circulating nitrogen presses and cooled to liquid nitrogen by heat exchange with LNG, which is separated into gas and liquid nitrogen in the gas-liquid separator. The gas nitrogen is returned to the compressor to circulate and compress the refrigeration liquid nitrogen, part of which is sent out as product and part of which is sent to the liquefier to heat exchange with part of the air, which is then liquefied and sent to the lower fractionation tower, where the cold volume of LNG is transferred to the liquid air separation plant . The liquid nitrogen is vaporised and reheated before being circulated.
DearAir manufactures advanced LNG cold energy utilization liquid air separation units.
