| 摘要 |
Apparatus for the separation of air by pressure swing adsorption comprising at least one vessel for a suitable adsorbent having an outlet in communication with a product gas pipeline containing a pressure regular, first-flow restrictor means downstream thereof, a buffer volume downstream of the regular, valve means intermediate the flow regular and the buffer volume to close the pipeline in the event the pressure falls below a chosen level, and a by-pass conduit having second flow restrictor means therein and terminating at one end in the pipeline between the pressure regulator and the valve means and the other end in the buffer volume or in the pipeline between the buffer volume and the valve means.
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