| 摘要 |
<p>PURPOSE:To efficiently recover oxygen by using zeolite as an adsorbent and recovering the oxygen by a pressure swing adsorption method in recovering the oxygen from a mixed gas containing chlorine and the oxygen. CONSTITUTION:Zeolite (e.g. Ca-A type) is preferably filled in four pressure- resistant vessels of the same shape and volume. Chlorine and oxygen are then contained therein and a mixed gas containing nitrogen and carbon dioxide, as necessary, is fed to a packed column under pressure to repeatedly carry out steps for successive absorbing, pressure equalizing, decompressing, vacuum deaerating and back washing and boosting according to a pressure swing adsorption method to separate the oxygen from the mixed gas. Thereby, the oxygen can be separated without being affected by the existing chlorine.</p> |
