Gas separation device

摘要

A simple and inexpensive gas separation device is provided. The gas separation device (100) includes: an adsorption tower (110) having an adsorbent (120) that adsorbs oxygen in a prescribed pressure and temperature environment, with at least one section thereof being exposed to a higher temperature atmosphere than a normal temperature; a first feed passage (132) connected to the adsorption tower for guiding into the adsorption tower air that has been blown from a blower device (130); a second feed passage (136) for guiding air, at a lower flow rate than the first feed passage, into the adsorption tower; a separated gas discharge path (140) connected to the adsorption tower for discharging a separated gas; a first heat exchanging unit (150) for exchanging heat between the separated gas discharged from the adsorption tower and the air guided into the adsorption tower from the first feed passage; an oxygen discharge unit (160) for reducing a pressure inside the adsorption tower, causing oxygen to desorb from the adsorption agent, and discharging oxygen from the adsorption tower; and a second heat exchanging unit (170) for exchanging heat between oxygen and the air guided into the adsorption tower from the second feed passage.

主权项

1. A gas separation device comprising:
an adsorption tower that has an adsorbent to adsorb oxygen in a prescribed pressure and temperature environment, at least part of the adsorption tower being exposed to an atmosphere at a temperature higher than a normal temperature; a first feed passage connected to the adsorption tower, and configured to introduce into the adsorption tower a mixed gas sent from a blower device, the mixed gas containing nitrogen and oxygen as main components thereof, and a second feed passage connected to the adsorption tower and configured to introduce the mixed gas into the adsorption tower at a flow rate smaller than the first feed passage; a separated gas discharge passage connected to the adsorption tower and configured to discharge a separated gas from the adsorption tower, the separated gas containing nitrogen as a main component thereof, the separated gas being produced upon removal of oxygen, which is adsorbed by the adsorbent, from the mixed gas introduced from the first feed passage and the second feed passage; a first heat exchanging unit configured to cause heat exchange between the separated gas discharged from the adsorption tower and the mixed gas introduced to the adsorption tower from the first feed passage; an oxygen discharge unit configured to reduce an inner pressure of the adsorption tower, cause oxygen to desorb from the adsorbent, and discharge oxygen from the adsorption tower; and a second heat exchanging unit configured to cause heat exchange between the desorbed oxygen and the mixed gas introduced to the adsorption tower from the second feed passage.