摘要 |
The present invention discloses the improvements to a vacuum swing adsorption (VSA) process used for Xe recovery. By only collecting the recovered gas mixture after the initial evacuation of N 2 from the adsorbent vessel and void space, the recovered Xe is not diluted by N 2 contained in the adsorbent vessel and void space. The concentration of the recovered Xe can by increased (high purity), simultaneously little Xenon is lost. During the initial evacuation of N 2 , the vessel has been evacuated to a pressure less than 1 atmospheric pressure (100 kPa), for example, from 100 to 1 torr (13000 to 130 Pa). |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
JOHNSON, ANDREW DAVID;PEARCE, RICHARD VINCENT;FARRIS, THOMAS STEPHEN;GOLDEN, TIMOTHY CHRISTOPHER;BOSCO, MATTHEW JOHN;KARWACKI, JR., EUGENE JOSEPH;WINCHESTER, DAVID CHARLES;HUFTON, JEFFREY RAYMOND |