| 摘要 |
The present invention relates to an apparatus for manufacturing liquid air, wherein source air flowing from the air is liquefied using LNG cold energy and an expanded air suction type ejector expander, thereby obtaining more liquid air, and eliminating the need of separation of oxygen and nitrogen, significantly reducing liquefying facilities, such as removing a liquefying purification tower. The present invention provides a liquid air system comprising: a compressor for compressing air; a heat exchanger for cooling the air, which has passed through the compressor, by LNG cold energy; a first ejector expander for expanding the air, which has passed through the heat exchanger, to a middle pressure; a gas-liquid separator for separating the air, which has passed through the first ejector expander, into gas and liquid air, wherein, of the separated gas and liquid, the gas air with a middle pressure is heat-exchanged with the air sucked by the ejector, returned to the compressor, and then compressed by the compressor; a second ejector expander for additionally expanding the liquid air to a final pressure; and a liquid air storage tank for finally storing the liquid air, which is produced passing through the expander, wherein the cold gas air of the storage tank is sucked into the first ejector expander. |
