| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a gas concentration device with a high cleanness of cleaned air released to an atmosphere, capable of enhancing concentration rate. <P>SOLUTION: To solve the above problem, the gas concentration device, is provided with two adsorption rotors 1, 2, each of which has an adsorption zone, a desorption zone and a purge zone. The gas exiting from the first adsorption zone 3 is released to the atmosphere and the gas exiting from the first purge zone 7 is passed through the first desorption zone 5 through a first heater 10. The gas exiting from the first desorption zone 5 is passed through the second adsorption zone 4 and the second purge zone 8 and the gas exiting from the second adsorption zone 4 is passed through the first adsorption zone 3. The gas exiting from the second purge zone 8 is passed through the second desorption zone 6 through a second heater 13. Thereby, the gas to be treated is concentrated at two stages and the gas exiting from the first adsorption zone 3 is only released to the atmosphere. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
