The liquid air separation plant system uses the cold energy to produce liquid oxygen, liquid nitrogen and liquid argon in an air separation system, including an air compression pre-cooling system, an air purification system, an air separation system and a nitrogen circulation system for liquid air separation plant cold recovery. the nitrogen circulation system for liquid air separation plant cold recovery is placed in a separate cold box from the main cold box of the air separation system. the liquid air separation plant cold recovery system includes a high and low pressure low temperature circulation nitrogen compressor, a high pressure heat exchanger, a gas-liquid separator and a nitrogen circulation system for liquid air separation plant cold recovery. high pressure heat exchanger, and gas-liquid separator. The raw air recovers the low temperature cold energy from the liquid air separation plant and transfers it to the air separation system. The high temperature cold energy is used for the intermediate cooling of the air compressor and the cooling of the compressed air by means of a suitable refrigerant. Utilising the liquid air separation plant cold energy in stages significantly reduces electricity and water consumption compared to conventional all-liquid air separation plants. Leakage of methane into the fractionation system is eliminated, making the liquid air separation plant safe.
Kaifeng DEAR Air Separation Co., Ltd. has achieved fine, perfect, strict and safe design in terms of material selection for small air separation units, large air separation units and liquid air separation plant manufacturing according to actual requirements and specific conditions.
